Combining Chlorzoxazone and Codeine Sulfate is a major interaction and should generally be avoided without close medical supervision.
Patients may experience increased sedation, dizziness, confusion, and psychomotor impairment. The most serious clinical effect is an increased risk of respiratory depression, which can be life-threatening. Other effects include profound drowsiness, decreased cognitive function, and impaired coordination.
Mechanism: Codeine sulfate, an opioid analgesic, exerts its effects primarily through agonism of mu-opioid receptors in the central nervous system (CNS), leading to CNS depression. Chlorzoxazone, a centrally acting skeletal muscle relaxant, also produces CNS depression by inhibiting multisynaptic reflex arcs in the spinal cord and subcortical areas. The co-administration of these agents results in additive CNS depressant effects.
Chlorzoxazone vs. Codeine Sulfate
Compare Chlorzoxazone and Codeine Sulfate: mechanism of action, indications, side effects, cost, and which may be right for you.
Drug A
Chlorzoxazone
Chlorzoxazone
Skeletal Muscle Relaxants
RxDrug B
Codeine Sulfate
Codeine sulfate
Opioid Analgesics
RxQuick Comparison
| Category | Chlorzoxazone | Codeine Sulfate |
|---|---|---|
| Drug Class | Skeletal Muscle Relaxants | Opioid Analgesics |
| Rx Status | Rx | Rx |
| Generic Available | No | No |
| Typical Cost | $50–$150/month | $10–$50/month |
Chlorzoxazone Overview
Chlorzoxazone is a medication used to help relieve discomfort from sudden, painful muscle and bone conditions. It works by affecting the central nervous system, which helps reduce pain and muscle spasms, often alongside rest and physical therapy.
Full Chlorzoxazone guide →Codeine Sulfate Overview
CODEINE SULFATE (brand name: Codeine sulfate) is a Opioid Analgesics. 1 INDICATIONS AND USAGE Codeine Sulfate Tablets are indicated for the management of mild to moderate pain, where treatment with an opioid is appropriate and for which alternative treatments are inadequate. Limitations of Use: • Because of the risks of addiction, abuse, misuse, overdose, and death,…
Full Codeine Sulfate guide →How Each Drug Works
Codeine Sulfate
Codeine sulfate is an opioid agonist relatively selective for the mu-opioid receptor, but with a much weaker affinity than morphine. The analgesic properties of codeine have been speculated to come from its conversion to morphine, although the exact mechanism of analgesic action remains unknown.
Approved Uses (Indications)
Chlorzoxazone
INDICATIONS AND USAGE Chlorzoxazone is 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 this drug has not been clearly identified, but may be related to its sedative properties. Chlorzoxazone does not directly relax tense skeletal muscles in man.
Codeine Sulfate
Codeine Sulfate Tablets are indicated for the management of mild to moderate pain, where treatment with an opioid is appropriate and for which alternative treatments are inadequate. 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 Codeine Sulfate Tablets, for use in patients for whom alternative treatment options are ineffective, not tolerated, or would be otherwise inad…
Side Effects
Chlorzoxazone
Codeine Sulfate
Cost Comparison
Chlorzoxazone
$50–$150/month
As a brand-only medication, Chlorzoxazone can be expensive. Patients should check for manufacturer coupons or patient assistance programs, and compare prices at different pharmacies using discount cards.
Codeine Sulfate
$10–$50/month
As a generic medication, Codeine Sulfate is relatively inexpensive. Using a discount card or coupon can often reduce the cash price further.
Compare prices for Chlorzoxazone and Codeine Sulfate
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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.