Drug Facts
Composition & Profile
Identifiers & Packaging
HOW SUPPLIED Methocarbamol Tablets USP, 1000 mg - Orange, film coated, oblong-shaped tablets, one side debossed ‘AP349’, the other side bisected. They are supplied as follows: Bottles of 100, NDC 85477-101-10 Store at controlled room temperature, between 20°C and 25°C (68°F and 77°F). Dispense in tight container. Manufactured for: Oncora Pharma Dallas, TX 75161; label
- HOW SUPPLIED Methocarbamol Tablets USP, 1000 mg - Orange, film coated, oblong-shaped tablets, one side debossed ‘AP349’, the other side bisected. They are supplied as follows: Bottles of 100, NDC 85477-101-10 Store at controlled room temperature, between 20°C and 25°C (68°F and 77°F). Dispense in tight container. Manufactured for: Oncora Pharma Dallas, TX 75161
- label
Overview
Methocarbamol Tablets USP,1000 mg, a carbamate derivative of gualfenesin, is a central nervous system (CNS) depressant with sedative and musculoskeletal relaxant properties. The chemical name of methocarbamol is a 3-(2 methoxyphenoxy)-1,2-propanediol 1-carbamate and has the empirical formula C11H15NO5. Its molecular weight is 241.24. The structural formula is shown below. Methocarbamol is a white powder, sparingly soluble in water and chloroform, soluble in alcohol (only with heating) and propylene glycol, and insoluble in benzene and n-hexane. Methocarbamol tablet, 1000 mg is available as an orange, film coated, oblong-shaped tablet containing 1000 mg of methocarbamol, USP for oral administration. The inactive ingredients present are microcrystalline cellulose, croscarmellose sodium, FD&C Yellow 6 aluminum lake, hydroxypropyl cellulose, hypromellose, magnesium stearate, lactose monohydrate, polyethylene glycol, triacetin, titanium dioxide. Methocarbamol Structure
Indications & Usage
Methocarbamol 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 methocarbamol has not been clearly identified, but may be related to its sedative properties. Methocarbamol does not directly relax tense skeletal muscles in man.
Dosage & Administration
Methocarbamol, 1000 mg – Adults: Initial dosage: 1 ½ tablets 4 time daily Maintenance dosage: 1 tablet 4 times daily Six grams a day are recommended for the first 48 to 72 hours of treatment. (For severe conditions 8 grams a day may be administered). Thereafter, the dosage can usually be reduced to approximately 4 grams a day.
Warnings & Precautions
WARNINGS Since methocarbamol may possess a general CNS depressant effect, patients receiving methocarbamol tablets should be cautioned about combined effects with alcohol and other CNS depressants. Safe use of methocarbamol has not been established with regard to possible adverse effects upon fetal development. There have been reports of fetal and congenital abnormalities following in utero exposure to methocarbamol. Therefore, methocarbamol tablets should not be used in women who are or may become pregnant and particularly during early pregnancy unless in the judgment of the physician the potential benefits outweigh the possible hazards (see PRECAUTIONS, Pregnancy).
Contraindications
Methocarbamol is contraindicated in patients hypersensitive to methocarbamol or to any of the tablet components.
Adverse Reactions
Adverse reactions reported coincident with the administration of methocarbamol include: Body as a whole: Anaphylactic reaction, angioneurotic edema, fever, headache Cardiovascular system: Bradycardia, flushing, hypotension, syncope, thrombophlebitis Digestive system: Dyspepsia, jaundice (including cholestatic jaundice), nausea and vomiting Hemic and lymphatic system: Leukopenia Immune system: Hypersensitivity reactions Nervous system: Amnesia, confusion, diplopia, dizziness or lightheadedness, drowsiness, insomnia, mild muscular incoordination, nystagmus, sedation, seizures (including grand mal), vertigo Skin and special senses: Blurred vision, conjunctivitis, nasal congestion, metallic taste, pruritus, rash, urticaria To report SUSPECTED ADVERSE REACTIONS, contact FDA at 1-800-FDA-1088 or www.fda.gov/medwatch
Drug Interactions
See WARNINGS and PRECAUTIONS for interaction with CNS drugs and alcohol. Methocarbamol may inhibit the effect of pyridostigmine bromide. Therefore, methocarbamol should be used with caution in patients with myasthenia gravis receiving anticholinesterase agents.
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