Methomol tablet 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 Methomol has not been clearly identified, but may be related to its sedative properties. Methomol does not directly relax tense skeletal muscles in man.
The mechanism of action of methocarbamol is thought to be dependant on its central nervous system depressant activity. This action may be mediated through blocking spinal polysynaptic reflexes, decreasing nerve transmission in spinal and supraspinal polysynaptic pathways, and prolonging the refractory period of muscle cells. Methocarbamol has been found to have no effect on contraction of muscle fibres, motor end plates, or nerve fibres.
Route of Administration: Oral Methocarbamol 500 mg- Adults: Initial dosage: 3 tablets q.i.d. Maintenance dosage: 2 tablets q.i.d. Methocarbamol 750 mg- Adults: Initial dosage: 2 tablets q.i.d. Maintenance dosage: 1 tablet q.4h. or 2 tablets t.i.d. 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. Pediatric Use : Safety and effectiveness of Methocarbamol in pediatric patients below the age of 16 have not been established.
Always consult a registered doctor before taking any medicine. This information is for general knowledge only.
Adverse reactions reported coincident with the administration of Methomol include: Body as a whole : Anaphylactic reaction, angioneurotic edema, fever, headache Cardiovascular system : Bradycardia, flushing, hypotension, syncope, thrombo- phlebitis 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.
Methocarbamol is contraindicated in patients hypersensitive to Methocarbamol or to any of the tablet components.
Methomol may inhibit the effect of Pyridostigmine Bromide. Therefore, Methomol should be used with caution in patients with myasthenia gravis receiving anticholinesterase agents. Drug/Laboratory Test Interactions : Methomol may cause a color interference in certain screening tests for 5-hydroxyindoleacetic acid (5-HIAA) using nitrosonaphthol reagent and in screening tests for urinary vanillylmandelic acid (VMA) using the Gitlow method. Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term studies to evaluate the carcinogenic potential of Methomol have not been performed. No studies have been conducted to assess the effect of Methomol on mutagenesis or its potential to impair fertility.
Patients should be cautioned that Methomol may cause drowsiness or dizziness, which may impair their ability to operate motor vehicles or machinery because Methomol may possess a general CNS-depressants effect. Patients should be cautioned about combined effects with alcohol and other CNS depressants. Safe use of Methomol 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 Methomol. Therefore, Methomol 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.