Combining Methadone and Methocarbamol is a major interaction and should generally be avoided without close medical supervision.
Patients may experience profound sedation, respiratory depression, hypotension, and psychomotor impairment. This can lead to an increased risk of falls, accidental injury, and potentially life-threatening respiratory arrest. The combination can also exacerbate cognitive impairment and decrease the level of consciousness.
Mechanism: Both methadone, an opioid analgesic, and methocarbamol, a centrally acting muscle relaxant, exert depressant effects on the central nervous system (CNS). This interaction is primarily pharmacodynamic, as their combined use leads to an additive or synergistic increase in CNS depression. Methadone acts on opioid receptors, while methocarbamol's exact mechanism is not fully understood but involves general CNS depression.
Methadone vs. Methocarbamol
Compare Methadone and Methocarbamol: mechanism of action, indications, side effects, cost, and which may be right for you.
Drug A
Methadone
Methadone Hydrochloride
Opioid Analgesics
RxDrug B
Methocarbamol
Methocarbamol
Skeletal Muscle Relaxants
RxQuick Comparison
| Category | Methadone | Methocarbamol |
|---|---|---|
| Drug Class | Opioid Analgesics | Skeletal Muscle Relaxants |
| Rx Status | Rx | Rx |
| Generic Available | No | No |
| Typical Cost | $15–$60/month | $15–$40/month |
Methadone Overview
METHADONE (brand name: Methadone Hydrochloride) is a Opioid Analgesics. 1 INDICATIONS AND USAGE Methadone hydrochloride tablets is indicated for the: Management of severe and persistent pain that requires an opioid analgesic and that cannot be adequately treated with alternative options, including immediate-release opioids. Limitations of Use Because of the risks of…
Full Methadone guide →Methocarbamol Overview
Methocarbamol is a medication used to help relieve discomfort from acute, painful muscle and bone conditions, often alongside rest and physical therapy. It works by affecting the central nervous system to reduce muscle spasms and pain, though it doesn't directly relax the muscles themselves.
Full Methocarbamol guide →How Each Drug Works
Methadone
Methadone hydrochloride is a mu-agonist; a synthetic opioid with multiple actions qualitatively similar to those of morphine, the most prominent of which involves the central nervous system and organs composed of smooth muscle. The principal therapeutic uses for methadone are for analgesia and for detoxification or maintenance in opioid addiction. The methadone withdrawal syndrome, although qualitatively similar to that of morphine, differs in that the onset is slower, t…
Approved Uses (Indications)
Methadone
Methadone hydrochloride tablets is indicated for the: Management of severe and persistent pain that requires an opioid analgesic and that cannot be adequately treated with alternative options, including immediate-release opioids. Limitations of Use Because of the risks of addiction, abuse, misuse, overdose, and death, which can occur at any dosage or duration and persist over the course of therapy [see WARNINGS AND PRECAUTIONS ], reserve opioid analgesics, including methadone hydrochloride tablets, for use in patients for whom alternative analgesic treatment opti…
Methocarbamol
INDICATIONS AND USAGE Methocarbamol tablets are indicated as an adjunct to rest, physical therapy, and other measures for the relief of discomfort associated with acute, painful musculoskeletal conditions. The mode of action of methocarbamol has not been clearly identified, but may be related to its sedative properties. Methocarbamol does not directly relax tense skeletal muscles in man.
Side Effects
Methadone
Methocarbamol
Cost Comparison
Methadone
$15–$60/month
Generic methadone is very affordable, especially with discount cards like GoodRx. Many pharmacies offer low-cost programs for this medication.
Methocarbamol
$15–$40/month
Methocarbamol is available as a low-cost generic. Using discount cards like GoodRx can further reduce the cost, often bringing it under $10 per month.
Compare prices for Methadone and Methocarbamol
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Medical Disclaimer
The information on RxGuide is intended for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician, pharmacist, or other qualified health provider with any questions you may have regarding a medical condition or medication. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.