Amrix Side Effects

Generic Name: cyclobenzaprine

Please note - some side effects for Amrix may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA at http://www.fda.gov/medwatch/ or 1-800-FDA-1088 (1-800-332-1088).

Side Effects of Amrix - for the Consumer

Amrix Extended-Release Capsules

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Amrix Extended-Release Capsules:

Constipation; dizziness; drowsiness; dry mouth; fatigue; nausea; stomach pain or upset.

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; confusion; fainting; fast or irregular heartbeat; mental or mood changes; numbness of an arm or a leg; one-sided weakness; seizures; severe dizziness or vomiting; speech or vision problems; sudden severe stomach pain; trouble urinating; yellowing of the skin or eyes.

Side Effects by Body System

Nervous system

Elderly patients may be particularly susceptible to the sedation and confusion which may accompany cyclobenzaprine therapy.

Nervous system side effects are common and include drowsiness in up to 40% of treated patients and dizziness in up to 11%. Fatigue, asthenia, headache, nervousness, blurred vision, and confusion have also been reported.

Other

Other side effects have included anticholinergic effects such as dry mouth (in as many as 27% of treated patients), and, less frequently, dry skin, blurry vision, constipation, and an organic brain syndrome. Paradoxical sweating has also been reported.

Psychiatric

Psychiatric side effects including mania and psychosis have been reported rarely. A case of hallucinations has also been reported.

Hypersensitivity

Hypersensitivity side effects have included rash, angioedema, and pruritus. Anaphylaxis has been reported rarely.

Cardiovascular

Cardiovascular side effects have included cardiac arrhythmias, tachycardia, and hypotension.

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