Amrix is a once-a-day extended release formulation of cyclobenzaprine, which belongs to the skeletal muscle relaxant class of drugs. It is used to relieve pain from local and acute muscle spasms as well as tenderness. This FDA-approved drug is often prescribed in conjunction with rest and physical therapy for individuals suffering from muscle injury. Off-label indication for Amrix includes treatment for fibromyalgia.
Amrix is a medicine used in the treatment of muscle spasms and other musculoskeletal disorders. It has also been used off-label in the treatment of fibromyalgia. Amrix is only administered via the oral route.
The active ingredient of Amrix - cyclobenzaprine - is an anticholinergic drug, meaning it reduces the effects of acetylcholine on muscle fibres. This, in turn, relaxes the muscles.
Amrix is primarily metabolised via the hepatic, or liver, route. It has a long half-life of around 18 hours - meaning it takes 18 hours for just 50 percent of the drug to be eliminated from the body.
Common side effects associated with Amrix include a headache, dizziness, drowsiness, blurred vision, and difficulty concentrating.