SELEGILINE (brand name: EMSAM) is a MAOIs. 1 INDICATIONS AND USAGE EMSAM (selegiline transdermal system) is a monoamine oxidase inhibitor (MAOI) indicated for the treatment of adults with major depressive disorder (MDD) .
Typical Cost
$800–$2,000/month
Status
Rx
Generic
Brand Only
Phenelzine sulfate is the lowest-cost MAOIs at $30-$80/month/month
Uses & Indications
1 INDICATIONS AND USAGE EMSAM (selegiline transdermal system) is a monoamine oxidase inhibitor (MAOI) indicated for the treatment of adults with major depressive disorder (MDD) [see Clinical Studies ] . EMSAM ® (selegiline transdermal system) is a monoamine oxidase inhibitor (MAOI) indicated for the treatment of major depressive disorder (MDD) .
Dosage & Administration
2 DOSAGE AND ADMINISTRATION EMSAM should be applied to dry, intact skin on the upper torso (below the neck and above the waist), upper thigh or the outer surface of the upper arm once every 24 hours .
- Initial Treatment: The recommended starting dose and target dose for EMSAM is 6 mg per 24 hours . Based on clinical judgment, dose increases should occur in increments of 3 mg per 24 hours (up to a maximum dose of 12 mg per 24 hours) at intervals of no less than 2 weeks .
- Geriatric Use: The recommended dose for elderly patients (65 years and older) is EMSAM 6 mg per 24 hours daily .
- Dietary Modifications with EMSAM 9 mg per 24 hours and 12 mg per 24 hours: Tyramine-rich foods and beverages should be avoided beginning on the first day of EMSAM 9 mg per 24 hours or 12 mg per 24 hours treatment, and should continue to be avoided for 2 weeks after a dose reduction to EMSAM 6 mg per 24 hours or following the discontinuation of EMSAM 9 mg per 24 hours or 12 mg per 24 hours . 2.1 Initial Treatment EMSAM should be applied to dry, intact skin on the upper torso (below the neck and above the waist), upper thigh or the outer surface of the upper arm once every 24 hours. The recommended starting dose and target dose for EMSAM is 6 mg per 24 hours. EMSAM has been systematically evaluated and shown to be effective in a dose range of 6 mg per 24 hours to 12 mg per 24 hours. However, the trials were not designed to assess if higher doses are more effective than the lowest effective dose of 6 mg per 24 hours. Based on clinical judgment, if dose increases are indicated for individual patients, they should occur in dose increments of 3 mg per 24 hours (up to a maximum dose of 12 mg per 24 hours) at intervals of no less than 2 weeks. Full antidepressant effect may be delayed. Patients should be informed that tyramine-rich foods and beverages should be avoided beginning on the first day of EMSAM 9 mg per 24 hours or 12 mg per 24 hours treatment and should continue to be avoided for 2 weeks after a dose reduction to EMSAM 6 mg per 24 hours or following the discontinuation of EMSAM 9 mg per 24 hours or 12 mg per 24 hours [see Warnings and Precautions ] . 2.2 Maintenance Treatment It is generally agreed that episodes of depression require several months or longer of sustained pharmacologic therapy. Maintenance of efficacy in depressed patients on therapy with EMSAM at a dose of 6 mg per 24 hours after achieving a responder status for an average duration of about 25 days was demonstrated in a controlled trial [see Clinical Studies ] . The physician who elects to use EMSAM for extended periods should periodically re-evaluate the long-term usefulness of the drug for the individual patient. 2.3 Dietary Modifications Required for Patients Taking EMSAM 9 mg per 24 hours and 12 mg per 24 hours EMSAM (selegiline transdermal system) contains a monoamine oxidase inhibitor (MAOI). MAOIs including EMSAM combined with a high tyramine diet may cause a hypertensive crisis. A hypertensive crisis can be a life-threatening condition [see Warnings and Precautions ] . The foods and beverages listed in Table 5 should be avoided beginning on the first day of EMSAM 9 mg per 24 hours or 12 mg per 24 hours treatment, and should continue to be avoided for 2 weeks after a dose reduction to EMSAM 6 mg per 24 hours or following the discontinuation of EMSAM 9 mg per 24 hours or 12 mg per 24 hours [see Drug Interactions ] . 2.4 Screen for Bipolar Disorder Prior to Starting EMSAM Prior to initiating treatment with EMSAM or another antidepressant, screen patients for a personal or family history of bipolar disorder, mania, or hypomania [see Warnings and Precautions ] .
How It Works
12.1 Mechanism of Action The mechanism of action of selegiline (the drug substance of EMSAM) as an antidepressant is not fully understood, but is presumed to be linked to potentiation of monoamine neurotransmitter activity in the central nervous system (CNS) resulting from its irreversible inhibition of the enzyme monoamine oxidase (MAO).
Side Effects
The following adverse reactions are discussed in greater detail in other sections of the label.
- Suicidal Thoughts and Behaviors [see Warnings and Precautions ] .
- Serotonin Syndrome [see Contraindications and Warnings and Precautions ] .
- Blood Pressure Elevation [see Warnings and Precautions ] .
- Activation of Mania/Hypomania [see Warnings and Precautions ] .
- External Heat [see Warnings and Precautions ] .
- Adverse Reactions occurring at an incidence of 2% or More Among EMSAM-Treated Patients and greater than placebo: Application site reaction, headache, insomnia, diarrhea, dry mouth, dyspepsia, rash, pharyngitis, sinusitis . To report SUSPECTED ADVERSE REACTIONS, contact Mylan at 1-877-4-INFO-RX (1-877-446-3679) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trial Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. Patient Exposure The premarketing development program for EMSAM included selegiline exposures in patients and/or normal subjects from two different groups of studies: 702 healthy subjects in clinical pharmacology/pharmacokinetics studies and 2,036 exposures from patients in controlled and uncontrolled major depressive disorder clinical trials. The conditions and duration of treatment with EMSAM varied and included double-blind, open-label, fixed-dose, and dose titration studies of short-term and longer-term exposures. Safety was assessed by monitoring adverse reactions, physical examinations, vital signs, body weights, laboratory analyses, and ECGs. Adverse reactions during exposure were obtained primarily by general inquiry and recorded by clinical investigators. In the tables and tabulations that follow, standard COSTART terminology has been used to classify reported adverse reactions. The stated frequencies of adverse reactions represent the proportion of individuals who experienced, at least once, a treatment-emergent adverse reaction of the type listed. A reaction was considered treatment-emergent if it occurred for the first time or worsened while receiving therapy following baseline evaluation. Adverse Reactions Leading To Discontinuation of Treatment Among 817 MDD patients treated with EMSAM at doses of either 3 mg per 24 hours (151 patients), 6 mg per 24 hours (550 patients) or 6 mg per 24 hours, 9 mg per 24 hours, and 12 mg per 24 hours (116 patients) in placebo-controlled trials of up to 8 weeks in duration, 7.1% discontinued treatment due to an adverse reaction as compared with 3.6% of 668 patients receiving placebo. The only adverse reaction associated with discontinuation, in at least 1% of EMSAM-treated patients at a rate at least twice that of placebo, was application site reaction (2% EMSAM vs. 0% placebo). Adverse Reactions Occurring at an Incidence of 2% or More Among EMSAM-Treated Patients Table 2 enumerates adverse reactions that occurred at an incidence of 2% or more (rounded to the nearest percent) among 817 MDD patients treated with EMSAM in doses ranging from 3 to 12 mg per 24 hours in placebo-controlled trials of up to 8 weeks in duration. Reactions included are those occurring in 2% or more of patients treated with EMSAM and for which the incidence in patients treated with EMSAM was greater than the incidence in placebo-treated patients. One adverse reaction was associated with a reporting of at least 5% in the EMSAM group, and a rate at least twice that in the placebo group, in the pool of short-term, placebo-controlled studies: application site reactions ( see Application Site Reactions , below ). In one such study which utilized higher mean doses of EMSAM than that in the entire study pool, the following reactions met these criteria: application site reactions, insomnia, diarrhea, and pharyngitis. Table 2. Treatment-Emergent Adverse Reactions: Incidence in Placebo-Controlled Clinical Trials for Major Depressive Disorder with EMSAM Reactions reported by at least 2% of patients treated with EMSAM are included, except the following reactions, which had an incidence on placebo treatment greater than or equal to EMSAM: infection, nausea, dizziness, pain, abdominal pain, nervousness, back pain, asthenia, anxiety, flu syndrome, accidental injury, somnolence, rhinitis, and palpitations. Body System/Preferred Term EMSAM (N = 817) Placebo (N = 668) (% of Patients Reporting Reaction) Body as a Whole Headache 18 17 Digestive Diarrhea 9 7 Dyspepsia 4 3 Nervous Insomnia 12 7 Dry Mouth 8 6 Respiratory Pharyngitis 3 2 Sinusitis 3 1 Skin Application Site Reaction 24 12 Rash 4 2 Application Site Reactions In the pool of short-term, placebo-controlled major depressive disorder studies, application site reactions (ASRs) were reported in 24% of EMSAM-treated patients and 12% of placebo-treated patients. Most ASRs were mild or moderate in severity. ASRs led to dropout in 2% of EMSAM-treated patients and no placebo-treated patients. In one such study which utilized higher mean doses of EMSAM, ASRs were reported in 40% of EMSAM-treated patients and 20% of placebo-treated patients. Most of the ASRs in this study were described as erythema and most resolved spontaneously, requiring no treatment. When treatment was administered, it most commonly consisted of dermatological preparations of corticosteroids. Sexual Dysfunction Although changes in sexual desire, sexual performance, and sexual satisfaction often occur as manifestations of a psychiatric disorder, they may also be a consequence of pharmacologic treatment. Reliable estimates of the incidence and severity of untoward experiences involving sexual desire, performance, and satisfaction are difficult to obtain, in part because patients and physicians may be reluctant to discuss them. Accordingly, estimates of the incidence of untoward sexual experience and performance cited in product labeling are likely to underestimate their actual incidence. Table 3 shows that the incidence rates of sexual side effects in patients with major depressive disorder are comparable to the placebo rates in placebo-controlled trials. Table 3. Incidence of Sexual Side Effects in Placebo-Controlled Clinical Trials with EMSAM Adverse Reaction EMSAM Placebo IN MALES ONLY (N = 304) (N = 256) Abnormal Ejaculation 1.0% 0.0% Decreased Libido 0.7% 0.0% Impotence 0.7% 0.4% Anorgasmia 0.2% 0.0% IN FEMALES ONLY (N = 513) (N = 412) Decreased Libido 0.0% 0.2% There are no adequately designed studies examining sexual dysfunction with EMSAM treatment. Vital Sign Changes EMSAM and placebo groups were compared with respect to mean change from baseline in vital signs (pulse, systolic blood pressure, and diastolic blood pressure), and the incidence of patients meeting criteria for potentially clinically significant changes from baseline in these variables. In the pool of short-term, placebo-controlled major depressive disorder studies, 3.0% of EMSAM-treated patients and 1.5% of placebo-treated patients experienced a low systolic blood pressure, defined as a reading less than or equal to 90 mmHg with a change from baseline of at least 20 mmHg. In one study which utilized higher mean doses of EMSAM, 6.2% of EMSAM-treated patients and no placebo-treated patients experienced a low standing systolic blood pressure by these criteria. In the pool of short-term major depressive disorder trials, 9.8% of EMSAM-treated patients and 6.7% of placebo-treated patients experienced a notable orthostatic change in blood pressure, defined as a decrease of at least 10 mmHg in mean blood pressure with postural change. Weight Changes In placebo-controlled studies (6 to 8 weeks), the incidence of patients who experienced at least 5% weight gain or weight loss is shown in Table 4. Table 4. Incidence of Weight Gain and Weight Loss in Placebo-Controlled Trials with EMSAM Weight Change EMSAM Placebo (N = 757) (N = 614) Gained at least 5% 2.1% 2.4% Lost at least 5% 5.0% 2.8% In these trials, the mean change in body weight among EMSAM-treated patients was a 1.2 lbs loss compared to 0.3 lbs gain in placebo-treated patients. Laboratory Changes EMSAM and placebo groups were compared with respect to mean change from baseline in various serum chemistry, hematology, and urinalysis variables, and the incidence of patients meeting criteria for potentially clinically significant changes from baseline in these variables. These analyses revealed no clinically important changes in laboratory test parameters associated with EMSAM. Electrocardiogram Changes Electrocardiograms (ECGs) from EMSAM (N = 817) and placebo (N = 668) groups in controlled studies were compared with respect to mean change from baseline in various ECG parameters, and the incidence of patients meeting criteria for clinically significant changes from baseline in these variables. No clinically meaningful changes in ECG parameters from baseline to final visit were observed for patients in controlled studies. Other Reactions Observed During the Premarketing Evaluation of EMSAM The following listing does not include reactions: 1) already listed elsewhere in labeling, 2) for which a causal relationship to drug was remote, 3) which were so general as to be uninformative, 4) which were not considered to have significant clinical implications, or 5) which occurred at a rate equal to or less than placebo. Cardiovascular System: Tachycardia. Digestive System: Anorexia. Nervous System: Agitation, amnesia, tremor, twitching. Skin and Appendages: Pruritus. 6.2 Postmarketing Experience The following adverse reactions have been identified during post-approval use of EMSAM. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Nervous System: Convulsion and hypoesthesia. Psychiatric System: Disorientation, hallucination (visual), and tension.
Warnings & Precautions
- Tyramine-Induced Hypertensive Crisis: Patients receiving EMSAM 9 mg per 24 hours and 12 mg per 24 hours should follow the recommended dietary modifications .
- Blood Pressure Elevation Related to Concomitant Medication: monitor blood pressure if EMSAM is used with any of the following drugs: buspirone, amphetamines, or cold products or weight-reducing preparations that contain sympathomimetic amines (e.g., pseudoephedrine, phenylephrine, phenylpropanolamine, and ephedrine). If a hypertensive crisis occurs, EMSAM should be discontinued immediately and therapy to lower blood pressure should be instituted immediately .
- Activation of Mania/Hypomania: Screen patients for bipolar disorder .
- External Heat: Avoid exposing the EMSAM application site to external sources of direct heat, such as heating pads or electric blankets, heat lamps, saunas, hot tubs, heated water beds, and prolonged direct sunlight . 5.1 Suicidal Thoughts and Behaviors in Adolescents and Young Adults In pooled analyses of placebo-controlled trials of antidepressant drugs (SSRIs and other antidepressant classes) that included approximately 77,000 adult patients and over 4,400 pediatric patients, the incidence of suicidal thoughts and behaviors in pediatric and young adult patients was greater in antidepressant-treated patients than in placebo-treated patients. The drug-placebo differences in the number of cases of suicidal thoughts and behaviors per 1000 patients treated are provided in Table 1. No suicides occurred in any of the pediatric studies. There were suicides in the adult studies, but the number was not sufficient to reach any conclusion about antidepressant drug effect on suicide. Table 1: Risk Differences of the Number of Cases of Suicidal Thoughts or Behaviors in the Pooled Placebo-Controlled Trials of Antidepressants in Pediatric and Adult Patients Age Range (years) Drug-Placebo Difference in Number of Patients of Suicidal Thoughts or Behaviors per 1000 Patients Treated Increases Compared to Placebo <18 14 additional patients 18-24 5 additional patients Decreases Compared to Placebo 25-64 1 fewer patient ≥65 6 fewer patients It is unknown whether the risk of suicidal thoughts and behaviors in pediatric and young adult patients extends to longer-term use, i.e., beyond four months. However, there is substantial evidence from placebo-controlled maintenance trials in adults with MDD that antidepressants delay the recurrence of depression. Monitor all antidepressant-treated patients for clinical worsening and emergence of suicidal thoughts and behaviors, especially during the initial few months of drug therapy and at times of dosage changes. Counsel family members or caregivers of patients to monitor for changes in behavior and to alert the healthcare provider. Consider changing the therapeutic regimen, including possibly discontinuing EMSAM, in patients whose depression is persistently worse, or who are experiencing emergent suicidal thoughts or behaviors. 5.2 Serotonin Syndrome The development of a potentially life-threatening serotonin syndrome has been reported with concomitant use of MAOIs, such as EMSAM, with serotonergic drugs. These reactions have also been reported in patients who have discontinued serotonergic drugs and then subsequently started an MAOI [see Contraindications ] . Serotonin syndrome symptoms may include mental status changes (e.g., agitation, hallucinations, delirium, and coma), autonomic instability (e.g., tachycardia, labile blood pressure, dizziness, diaphoresis, flushing, hyperthermia), neuromuscular changes (e.g., tremor, rigidity, myoclonus, hyperreflexia, incoordination), seizures, and/or gastrointestinal symptoms (e.g., nausea, vomiting, diarrhea). Patients should be monitored for the emergence of serotonin syndrome. Treatment with EMSAM and any concomitant serotonergic agents should be discontinued immediately if the above events occur and supportive treatment should be initiated. 5.3 Blood Pressure Elevation Tyramine-Induced Hypertensive Crisis EMSAM inhibits the catabolism of dietary amines, such as tyramine, and has the potential to produce a hypertensive crisis following the ingestion of tyramine-rich foods or beverages [see Drug Interactions and Clinical Pharmacology ] . Hypertensive crises, which in some cases may be fatal, are characterized by some or all of the following symptoms: occipital headache which may radiate frontally, palpitation, neck stiffness or soreness, nausea, vomiting, sweating (sometimes with fever and sometimes with cold, clammy skin), dilated pupils, and photophobia. Either tachycardia or bradycardia may be present and can be associated with constricting chest pain. Intracranial bleeding has been reported in association with the increase in blood pressure. Patients should be instructed as to the signs and symptoms of severe hypertension and advised to seek immediate medical attention if these signs or symptoms are present. If a hypertensive crisis occurs, EMSAM should be discontinued immediately and therapy to lower blood pressure should be instituted immediately. Fever should be managed by means of external cooling. Patients must be closely monitored until symptoms have stabilized. To prevent a hypertensive crisis, patients receiving treatment with EMSAM 9 mg per 24 hours or EMSAM 12 mg per 24 hours should follow the advice regarding a low tyramine diet described in Table 5 under Dietary Modifications Required for Patients Taking EMSAM 9 mg per 24 hours and 12 mg per 24 hours [see Drug Interactions ] . Blood Pressure Elevation Related to Concomitant Medication Carbamazepine is contraindicated with EMSAM because carbamazepine has been shown to significantly elevate selegiline levels, which may increase the risk of a hypertensive crisis [see Contraindications and Drug Interactions ] . The use of EMSAM with adrenergic drugs or buspirone may produce substantial increases in blood pressure. Therefore, monitor blood pressure if EMSAM is used with any of the following drugs: buspirone, amphetamines, or cold products or weight-reducing preparations that contain sympathomimetic amines (e.g., pseudoephedrine, phenylephrine, phenylpropanolamine, and ephedrine). 5.4 Activation of Mania/Hypomania In patients with bipolar disorder, treating a depressive episode with EMSAM or another antidepressant may precipitate a mixed/manic episode. During Phase III trials, a manic reaction occurred in 8 out of 2,036 (0.4%) patients treated with EMSAM. Prior to initiating treatment with EMSAM, screen patients for any personal or family history of bipolar disorder, mania, or hypomania. 5.5 External Heat The effect of direct heat applied to EMSAM on the bioavailability of selegiline has not been studied. However, in theory, heat may result in an increase in the amount of selegiline absorbed from EMSAM and produce elevated serum levels of selegiline. Patients should be advised to avoid exposing the EMSAM application site to external sources of direct heat, such as heating pads or electric blankets, heat lamps, saunas, hot tubs, heated water beds, and prolonged direct sunlight.
Contraindications
- EMSAM (selegiline transdermal system) is contraindicated with selective serotonin reuptake inhibitors (SSRIs, e.g., fluoxetine, sertraline, and paroxetine); serotonin and norepinephrine reuptake inhibitors (SNRIs, e.g., venlafaxine and duloxetine); the tricyclic antidepressants clomipramine and imipramine, the opiate analgesics meperidine, tramadol, methadone, pentazocine, and propoxyphene; and the antitussive agent dextromethorphan because of a risk of serotonin syndrome when EMSAM is used with these agents [see Warnings and Precautions and Drug Interactions ] .
- Carbamazepine is contraindicated with EMSAM because of a possible increased risk of hypertensive crisis [see Warnings and Precautions and Clinical Pharmacology ] .
- After stopping treatment with drugs contraindicated with EMSAM, a time period equal to 4 to 5 half-lives (approximately one week) of the drug or any active metabolite should elapse before starting therapy with EMSAM. Because of the long half-life of fluoxetine and its active metabolite, at least 5 weeks should elapse between discontinuation of fluoxetine and initiation of treatment with EMSAM.
- At least 2 weeks should elapse after stopping EMSAM before starting therapy with any drug that is contraindicated with EMSAM.
- EMSAM is contraindicated in patients less than 12 years of age because of the potential for a hypertensive crisis [see Use in Specific Populations and Clinical Pharmacology ] .
- EMSAM is contraindicated in patients with pheochromocytoma because MAOIs may precipitate a hypertensive crisis in such patients.
- Serotonergic drugs: selective serotonin reuptake inhibitors (SSRIs), serotonin and norepinephrine reuptake inhibitors (SNRIs), clomipramine and imipramine, meperidine, tramadol, methadone, pentazocine, and propoxyphene; and the antitussive agent dextromethorphan should not be used with EMSAM because of a risk of serotonin syndrome .
- Carbamazepine should not be used with EMSAM .
- After stopping treatment with contraindicated medication, a time period equal to 4 to 5 half-lives (approximately one week) of the drug or any active metabolite should elapse before starting therapy with EMSAM. Because of the long half-life of fluoxetine and its active metabolite, at least 5 weeks should elapse between discontinuation of fluoxetine and initiation of treatment with EMSAM .
- At least 2 weeks should elapse after stopping EMSAM before starting therapy with a drug that is contraindicated with EMSAM .
- EMSAM is contraindicated in patients less than 12 years of age .
- Pheochromocytoma .
Drug Interactions
7.1 Serotonergic Drugs Serious, sometimes fatal, central nervous system (CNS) toxicity referred to as the “serotonin syndrome” has been reported with the combination of nonselective MAOIs and serotonergic drugs. Use of EMSAM with these drugs is contraindicated [see Contraindications and Warnings and Precautions ] . 7.2 Tyramine EMSAM has the capacity to inhibit intestinal MAO, which is responsible for the catabolism of tyramine in food and beverages. As a result of this inhibition, large amounts of tyramine may enter the systemic circulation and precipitate a sudden, large rise in blood pressure or hypertensive crisis [see Warnings and Precautions and Clinical Pharmacology ] . A diet low in tyramine content may be necessary to avoid this interaction. Studies to evaluate the potential for EMSAM to inhibit tyramine metabolism have been conducted and, overall, the data for EMSAM 6 mg per 24 hours support a recommendation that a modified diet is not required at this dose. Due to the more limited data available for EMSAM 9 mg per 24 hours and the results from the Phase I tyramine challenge study in fed volunteers administered EMSAM 12 mg per 24 hours, patients receiving these doses should follow Dietary Modifications Required for Patients Taking EMSAM 9 mg per 24 hours and 12 mg per 24 hours below [see Clinical Pharmacology ] . Dietary Modifications Required for Patients Taking EMSAM 9 mg per 24 hours and 12 mg per 24 hours The foods and beverages listed in Table 5 should be avoided beginning on the first day of EMSAM 9 mg per 24 hours or 12 mg per 24 hours treatment, and should continue to be avoided for 2 weeks after a dose reduction to EMSAM 6 mg per 24 hours or following the discontinuation of EMSAM 9 mg per 24 hours or 12 mg per 24 hours. Table 5. Food and Beverages to Avoid and Those which are Acceptable [see References ] Class of Food and Beverage Tyramine-Rich Foods and Beverages to Avoid Acceptable Foods and Drinks, Containing No or Little Tyramine Meat, Poultry, and Fish Air dried, aged and fermented meats, sausages and salamis (including cacciatore, hard salami and mortadella); pickled herring; and any spoiled or improperly stored meat, poultry, and fish (e.g., foods that have undergone changes in coloration, odor, or become moldy); spoiled or improperly stored animal livers Fresh meat, poultry, and fish, including fresh processed meats (e.g., lunch meats, hot dogs, breakfast sausage, and cooked sliced ham) Vegetables Broad bean pods (fava bean pods) All other vegetables Dairy Aged cheeses Processed cheeses, mozzarella, ricotta cheese, cottage cheese, and yogurt Beverages All varieties of tap beer and beers that have not been pasteurized so as to allow for ongoing fermentation Concomitant use of alcohol with EMSAM is not recommended. (Bottled and canned beers and wines contain little or no tyramine.) Miscellaneous Concentrated yeast extract (e.g., Marmite), sauerkraut, most soybean products (including soy sauce and tofu), OTC supplements containing tyramine Brewer’s yeast, baker’s yeast, soy milk, commercial chain restaurant pizzas prepared with cheeses low in tyramine 7.3 Sympathomimetic Amines and Buspirone The use of EMSAM with sympathomimetic amines or buspirone may produce substantial elevations in blood pressure. Therefore, monitor blood pressure if EMSAM is used with any of the following drugs: buspirone, amphetamines, and cold products or weight-reducing preparations that contain sympathomimetic amines (e.g., pseudoephedrine, phenylephrine, phenylpropanolamine, and ephedrine). 7.4 Effect of Other Drugs on EMSAM Carbamazepine is contraindicated with MAOIs, including selegiline [see Contraindications , Warnings and Precautions and Clinical Pharmacology ] . No dose adjustment for EMSAM is needed when EMSAM is used concomitantly with alcohol, alprazolam, ibuprofen, olanzapine, risperidone, levothyroxine, and CYP3A4 inhibitors (e.g., ketoconazole). No clinically meaningful change in selegiline exposure was seen when EMSAM was co-administered with alcohol, alprazolam, ibuprofen, olanzapine, risperidone, levothyroxine, and ketoconazole [see Clinical Pharmacology ] . 7.5 Effect of EMSAM on Other Drugs Use of alcohol while taking EMSAM is not recommended, even though EMSAM has not been shown to increase the impairment of mental and motor skills caused by alcohol (0.75 mg per kg) [see Clinical Pharmacology ] . Monitor blood pressure if sympathomimetic agents (e.g., phenylpropanolamine (PPA) or pseudoephedrine) are used with EMSAM, even though selegiline does not appear to affect the pharmacokinetics of PPA or pseudoephedrine [see Clinical Pharmacology ] . No dose adjustment of alprazolam, ibuprofen, levothyroxine, olanzapine, risperidone, warfarin, or strong CYP3A4 inhibitors (e.g., ketoconazole) is necessary when these drugs are used in combination with EMSAM. EMSAM had no clinically relevant effect on pharmacokinetics of these drugs.
Use in Specific Populations
- Pregnancy: May cause fetal harm .
- Lactation: Breastfeeding is not recommended .
- Pediatrics: EMSAM is contraindicated in patients under age 12 years and is not recommended in patients 12 to 17 years of age . 8.1 Pregnancy Risk Summary The available data on EMSAM use in pregnant women are not sufficient to inform a drug-associated risk of adverse pregnancy-related outcomes. In animal embryo-fetal development studies, transdermal administration of selegiline to rats and rabbits at doses up to 60 and 64 times the maximum recommended human dose (MRHD) respectively, produced slight increases in malformations in both rats and rabbits, and decreased fetal weight, delayed ossification, and embryo-fetal post-implantation loss in rats. Most of these effects were seen at the high dose in both rats and rabbits. These effects were not seen at 8 times and 16 times the MRHD in rats and rabbits, respectively. In a pre-natal and post-natal development study, transdermal administration of selegiline in rats at doses 8, 24, and 60 times MRHD produced a decrease in pup weight and survival at the medium and high doses, an increase in the number of stillborn pups at the high dose, and delayed neurobehavioral and sexual development in pups at all doses. A persistent effect on reproductive performance of pups born to mothers treated at the high dose was evident (see Data ). When treating a pregnant woman with EMSAM, the physician should carefully consider both the potential risks of taking an MAOI, particularly the risk of hypertensive crisis during pregnancy, along with the established benefits of treating depression with an antidepressant. The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-associated maternal and embryo/fetal risk A prospective longitudinal study was conducted of 201 pregnant women with a history of major depression, who were either on antidepressants or had received antidepressants less than 12 weeks prior to their last menstrual period, and were in remission. Women who discontinued antidepressant medication during pregnancy showed a significant increase in relapse of their major depression compared to those women who remained on antidepressant medication throughout pregnancy. Data Animal Data In an embryofetal development study, rats were treated with transdermal selegiline during the period of organogenesis at doses of 10, 30, and 75 mg/kg/day (8, 24, and 60 times the MRHD of EMSAM [12 mg/24 hours] on a mg/m 2 basis). At the highest dose there was a decrease in fetal weight and slight increases in malformations, delayed ossification (also seen at the mid dose), and embryofetal post-implantation loss. Concentrations of selegiline and its metabolites in fetal plasma were generally similar to those in maternal plasma. In an embryofetal development study, rabbits were treated with transdermal selegiline during the period of organogenesis at doses of 2.5, 10, and 40 mg/kg/day (4, 16, and 64 times the MRHD on a mg/m 2 basis). A slight increase in visceral malformations was seen at the high dose. In a prenatal and postnatal development study, rats were treated with transdermal selegiline at doses of 10, 30, and 75 mg/kg/day (8, 24, and 60 times the MRHD on a mg/m 2 basis) on days 6 to 21 of gestation and days 1 to 21 of the lactation period. An increase in post-implantation loss was seen at the mid and high doses, and an increase in stillborn pups was seen at the high dose. Decreases in pup weight (throughout lactation and postweaning periods) and survival (throughout lactation period), delayed pup physical development, and pup epididymal and testicular hypoplasia, were seen at the mid and high doses. Delayed neurobehavioral and sexual development was seen at all doses. Adverse effects on pup reproductive performance, as evidenced by decreases in implantations and litter size, were seen at the high dose. These findings suggest persistent effects on the offspring of treated dams. A no-effect dose was not established in this study for developmental toxicity. 8.2 Lactation Risk Summary There is no information regarding the presence of selegiline in human milk, or on its effects on milk production or the breastfed infant. Selegiline and its metabolites are present in the milk of lactating rats ( see Data ) . Because of the potential for serious adverse reactions in breastfed infants from EMSAM, including the potential for hypertensive crisis, advise a woman that breastfeeding is not recommended during treatment with EMSAM and for 5 days after the final dose. Data In a prenatal and postnatal development study where rats were treated with transdermal selegiline at doses approximately 8, 24, and 60 times the MRHD on days 6 to 21 of gestation and days 1 to 21 of the lactation period, concentrations of selegiline and its metabolites in milk were approximately 15 and 5 times, respectively, the concentrations in maternal plasma. 8.4 Pediatric Use Use of EMSAM in patients less than 12 years of age is contraindicated because of the potential for a hypertensive crisis [see Contraindications ]. Limited pharmacokinetic data with doses lower than in the commercially available formulations suggest that children under age 12 may be exposed to increased levels of selegiline compared to adolescents and adults, administered with and without dietary modifications, therefore, there may be an increased risk of hypertensive crisis, even at the lowest dose of EMSAM. Efficacy has not been established in pediatric patients ages 12 to 17 years with MDD and EMSAM is not recommended for use in this age range [see Clinical Pharmacology ] . A multi-center, randomized, double-blind, placebo-controlled, flexible-dose trial in 308 adolescents (ages 12 to 17 years) with MDD failed to demonstrate the efficacy of EMSAM. Diagnosis of major depressive disorder (single episode or recurrent, moderate to severe) was based on according DSM-IV criteria and Kiddie Schedule for Affective Disorders and Schizophrenia for School Aged Children (K-SADS). Enrolled patients had a Children’s Depression Rating Scale-Revised of ≥ 45 at the screening visit. Trial participants were randomized 1:1 to either EMSAM or matching placebo without forced titration for a period of 12 weeks. Active treatment consisted of EMSAM transdermal system at a dose of 6 mg per 24 hours, 9 mg per 24 hours, or 12 mg per 24 hours. The primary efficacy endpoint was the difference in total score on the Children’s Depression Rating Scale-Revised (CDRS-R) from baseline to the end of study (EOS) (Week 12). There was no observed difference in effect on CDRS-R Total Score at Week 12 (EOS) between treatments. The mean reduction in CDRS-R Total Score was 21.4 in the EMSAM-treated subjects and 21.5 in those receiving placebo treatment. Safety endpoints included physical examination, 12-lead electrocardiogram, respiration rate, temperature, supine and standing blood pressure and heart rate, application site assessments, and adverse events. Overall, safety findings were similar to those observed in EMSAM trials conducted in adults. Treatment-emergent adverse events reported by at least 5% of EMSAM-treated patients at a rate at least twice the placebo rate were insomnia (6%, 3%) and upper respiratory tract infection (7%, 3%). 8.5 Geriatric Use The recommended dose of EMSAM for elderly patients (65 years and older) is 6 mg per 24 hours daily. The effect of age on the pharmacokinetics or metabolism of selegiline after administration of EMSAM has not been systematically evaluated. One hundred ninety-eight elderly (65 years of age and older) patients participated in clinical studies with EMSAM 6 mg per 24 hours to 12 mg per 24 hours. There were no overall differences in effectiveness between elderly and younger patients. In short-term, placebo-controlled depression trials, patients age 50 and older appeared to be at higher risk for rash (4.4% EMSAM vs. 0% placebo) than younger patients (3.4% EMSAM vs. 2.4% placebo). 8.6 Gender No adjustment of EMSAM dosage based on gender is needed. No gender differences have been observed in the pharmacokinetics or metabolism of selegiline during administration of EMSAM. 8.7 Reduced Hepatic Function No adjustment of EMSAM dosage is required in patients with mild liver impairment (Child-Pugh 5-6 points) or moderate liver impairment (Child-Pugh 7-9 points). After a single administration of EMSAM 6 mg per 24 hours in eight patients with mild or moderate liver impairment, no differences in either the metabolism or pharmacokinetic behavior of selegiline or its metabolites were observed as compared with data of normal subjects. EMSAM has not been studied in patients with severe liver impairment (Child-Pugh 10-15 points). 8.8 Reduced Renal Function No adjustment of EMSAM dosage is required in patients with mild renal impairment (eGFR 60-89 mL/min/1.73 m 2 ), moderate renal impairment (eGFR 30-59 mL/min/1.73 m 2 ), or severe renal impairment (eGFR 15-29 mL/min/1.73 m 2 ). Data from a single dose study examining the pharmacokinetics of EMSAM 6 mg per 24 hours in 12 patients with renal impairment suggest that mild, moderate, or severe renal impairment does not affect the pharmacokinetics of selegiline after transdermal application. EMSAM has not been studied in patients with end-stage renal disease (eGFR < 15 mL/min/1.73 m 2 or requiring dialysis).
Overdosage
10.1 Signs and Symptoms EMSAM overdosage may resemble overdosage with other nonselective, oral MAOI antidepressants and present with any of the following: drowsiness, dizziness, faintness, irritability, hyperactivity, agitation, severe headache, hallucinations, trismus, opisthotonos, convulsions, coma, rapid and irregular pulse, hypertension, hypotension and vascular collapse, precordial pain, respiratory depression and failure, hyperpyrexia, diaphoresis, and cool, clammy skin. 10.2 Management of Overdose There are no specific antidotes for EMSAM. If symptoms of overdosage occur, immediately remove the EMSAM system and institute appropriate supportive therapy. For contemporary information on the management of poisoning or overdosage, contact the National Poison Control Center at 1-800-222-1222. Delays of up to 12 hours between ingestion of drug and the appearance of signs may occur, and peak effects may not be observed for 24 to 48 hours. Since death has been reported following overdosage with MAOI agents, hospitalization with close monitoring during this period is strongly recommended. In order to avoid the occurrence of hypertensive crisis (“cheese reaction”), dietary tyramine should be restricted for several weeks beyond recovery to permit regeneration of the peripheral MAO-A isoenzyme.
Frequently Asked Questions
What is SELEGILINE used for?
1 INDICATIONS AND USAGE EMSAM (selegiline transdermal system) is a monoamine oxidase inhibitor (MAOI) indicated for the treatment of adults with major depressive disorder (MDD) [see Clinical Studies (14) ] . EMSAM ® (selegiline transdermal system) is a monoamine oxidase inhibitor (MAOI) indicated for the treatment of major depressive disorder (MDD) ( 1 ).
What is the recommended dosage for SELEGILINE?
2 DOSAGE AND ADMINISTRATION EMSAM should be applied to dry, intact skin on the upper torso (below the neck and above the waist), upper thigh or the outer surface of the upper arm once every 24 hours ( 2.1 ). • Initial Treatment: The recommended starting dose and target dose for EMSAM is 6 mg per 24 hours ( 2.1 ). Based on clinical judgment, dose increases should occur in increments of 3 mg per 24 hours (up to a maximum dose of 12 mg per 24 hours) at intervals of no less than 2 weeks ( 2.1 ). • Geriatric Use: The recommended dose for elderly patients (65 years and older) is EMSAM 6 mg per 24…
How does SELEGILINE work?
12.1 Mechanism of Action The mechanism of action of selegiline (the drug substance of EMSAM) as an antidepressant is not fully understood, but is presumed to be linked to potentiation of monoamine neurotransmitter activity in the central nervous system (CNS) resulting from its irreversible inhibition of the enzyme monoamine oxidase (MAO).
Who should not take SELEGILINE?
4 CONTRAINDICATIONS • EMSAM (selegiline transdermal system) is contraindicated with selective serotonin reuptake inhibitors (SSRIs, e.g., fluoxetine, sertraline, and paroxetine); serotonin and norepinephrine reuptake inhibitors (SNRIs, e.g., venlafaxine and duloxetine); the tricyclic antidepressants clomipramine and imipramine, the opiate analgesics meperidine, tramadol, methadone, pentazocine, and propoxyphene; and the antitussive agent dextromethorphan because of a risk of serotonin syndrome when EMSAM is used with these agents [see Warnings and Precautions (5.2) and Drug Interactions (7.1)…
What are the side effects of SELEGILINE?
6 ADVERSE REACTIONS The following adverse reactions are discussed in greater detail in other sections of the label. • Suicidal Thoughts and Behaviors [see Warnings and Precautions (5.1) ] . • Serotonin Syndrome [see Contraindications (4) and Warnings and Precautions (5.2) ] . • Blood Pressure Elevation [see Warnings and Precautions (5.3) ] . • Activation of Mania/Hypomania [see Warnings and Precautions (5.4) ] . • External Heat [see Warnings and Precautions (5.5) ] . • Adverse Reactions occurring at an incidence of 2% or More Among EMSAM-Treated Patients and greater than placebo: Application…
What drugs interact with SELEGILINE?
7 DRUG INTERACTIONS 7.1 Serotonergic Drugs Serious, sometimes fatal, central nervous system (CNS) toxicity referred to as the “serotonin syndrome” has been reported with the combination of nonselective MAOIs and serotonergic drugs. Use of EMSAM with these drugs is contraindicated [see Contraindications (4) and Warnings and Precautions (5.2) ] . 7.2 Tyramine EMSAM has the capacity to inhibit intestinal MAO, which is responsible for the catabolism of tyramine in food and beverages. As a result of this inhibition, large amounts of tyramine may enter the systemic circulation and precipitate a…
What are the important warnings for SELEGILINE?
5 WARNINGS AND PRECAUTIONS • Tyramine-Induced Hypertensive Crisis: Patients receiving EMSAM 9 mg per 24 hours and 12 mg per 24 hours should follow the recommended dietary modifications ( 5.3 ). • Blood Pressure Elevation Related to Concomitant Medication: monitor blood pressure if EMSAM is used with any of the following drugs: buspirone, amphetamines, or cold products or weight-reducing preparations that contain sympathomimetic amines (e.g., pseudoephedrine, phenylephrine, phenylpropanolamine, and ephedrine). If a hypertensive crisis occurs, EMSAM should be discontinued immediately and…
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