Product Elements:
Methocarbamol methocarbamol methocarbamol methocarbamol starch, corn hydroxypropyl cellulose, low substituted sodium starch glycolate type a potato povidone sodium lauryl sulfate silicon dioxide stearic acid magnesium stearate water hypromelloses titanium dioxide propylene glycol d&c yellow no. 10 fd&c yellow no. 6 polysorbate 20 hydroxypropyl cellulose, unspecified orange b135
Drug Interactions:
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.
Indications and Usage:
Indications and usage methocarbamol tablets usp, 500 mg and 750 mg are 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.
Warnings:
Warnings since methocarbamol may possess a general cns depressant effect, patients receiving methocarbamol tablets usp, 500 mg or 750 mg should be cautioned about combined effects with alcohol and other cns depressants. safe use of methocarbamol tablets usp, 500 mg and 750 mg 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 usp, 500 mg and 750 mg 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 ).
Dosage and Administration:
Dosage and administration methocarbamol tablets usp, 500 mg â adults: initial dosage: 3 tablets q.i.d. maintenance dosage: 2 tablets q.i.d. methocarbamol tablets usp, 750 mg â 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.
Contraindications:
Contraindications methocarbamol tablets usp, 500 mg and 750 mg are contraindicated in patients hypersensitive to methocarbamol or to any of the tablet components.
Adverse Reactions:
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, and rash, urticarial.
Drug Interactions:
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.
Pediatric Use:
Pediatric use safety and effectiveness of methocarbamol tablets usp, 500 mg and 750 mg in pediatric patients below the age of 16 have not been established.
Overdosage:
Overdosage limited information is available on the acute toxicity of methocarbamol. overdose of methocarbamol is frequently in conjunction with alcohol or other cns depressants and includes the following symptoms: nausea, drowsiness, blurred vision, hypotension, seizures, and coma. in post-marketing experience, deaths have been reported with an overdose of methocarbamol alone or in the presence of other cns depressants, alcohol or psychotropic drugs. treatment management of overdose includes symptomatic and supportive treatment. supportive measures include maintenance of an adequate airway, monitoring urinary output and vital signs, and administration of intravenous fluids if necessary. the usefulness of hemodialysis in managing overdose is unknown
Description:
Description methocarbamol tablets usp, a carbamate derivative of guaifenesin, is a central nervous system (cns) depressant with sedative and musculoskeletal relaxant properties. the chemical name of methocarbamol is 3 - (2-methoxyphenoxy) -1, 2- propanediol 1- carbamate and has the empirical formula c 11 h 15 no 5 . 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 tablets usp, 500 mg is available as a light orange colored, round, film- coated tablets, engraved with 'b134' on one side and scored on the other side, containing 500 mg of methocarbamol, usp for oral administration. the inactive ingredients present are corn starch, low substituted hydroxypropyl cellulose, hydroxypropyl cellulose, sodium starch glycolate, povidone, sodium lauryl sulfate, colloidal silicon dioxide, stearic acid, magnesium stearate, and purified water. methocarbamol tablets usp, 500 mg contains opadry 13h530000 (orange) (hypromellose, titanium dioxide, propylene glycol, fd&c yellow #6/sunset yellow fcf aluminum lake, polysorbate 20) as coating material. methocarbamol tablets usp, 750 mg is available as an orange colored, capsule shaped, film coated tablets, engraved with 'b135' on one side and plain on the other side, containing 750 mg of methocarbamol, usp for oral administration. the inactive ingredients present are corn starch, low substituted hydroxypropyl cellulose, hydroxypropyl cellulose, sodium starch glycolate, povidone, sodium lauryl sulfate, colloidal silicon dioxide, stearic acid, magnesium stearate, and purified water. methocarbamol tablets usp, 750 mg contains opadry 13h530001 (orange) (hypromellose, titanium dioxide, propylene glycol, d&c yellow #10 aluminum lake, fd&c yellow #6/sunset yellow fcf aluminum lake, polysorbate 20) as coating material. the structural formula for methocarbamol tablets usp, a carbamate derivative of guaifenesin, is a central nervous system (cns) depressant with sedative and musculoskeletal relaxant properties. the chemical name of methocarbamol is 3 - (2-methoxyphenoxy) -1, 2- propanediol 1- carbamate and has the empirical formula c11 h15 no5. its molecular weight is 241.24.
Clinical Pharmacology:
Clinical pharmacology the mechanism of action of methocarbamol in humans has not been established, but may be due to general central nervous system (cns) depression. it has no direct action on the contractile mechanism of striated muscle, the motor end plate or the nerve fiber.
Pharmacokinetics:
Pharmacokinetics in healthy volunteers, the plasma clearance of methocarbamol ranges between 0.20 and 0.80 l/h/kg, the mean plasma elimination half-life ranges between 1 and 2 hours, and the plasma protein binding ranges between 46% and 50%. methocarbamol is metabolized via dealkylation and hydroxylation. conjugation of methocarbamol also is likely. essentially all methocarbamol metabolites are eliminated in the urine. small amounts of unchanged methocarbamol also are excreted in the urine.
Carcinogenesis and Mutagenesis and Impairment of Fertility:
C arcinogenesis, mutagenesis, impairment of fertility long-term studies to evaluate the carcinogenic potential of methocarbamol have not been performed. no studies have been conducted to assess the effect of methocarbamol on mutagenesis or its potential to impair fertility.
How Supplied:
How supplied methocarbamol tablets usp, 500 mg are light orange colored, round, film-coated tablets, engraved with 'b134' on one side and scored on the other side. they are supplied as follows: bottles of 100 ndc 10135-0664-01 bottles of 500 ndc 10135-0664-05 methocarbamol tablets usp, 750 mg are orange colored, capsule shaped, film coated tablets, engraved with 'b135' on one side and plain on the other side. they are supplied as follows: bottles of 100 ndc 10135-0665-01 bottles of 500 ndc 10135-0665-05 store at controlled room temperature, between 20°c and 25°c (68°f and 77°f). dispense in tight container. manufactured for / distributed by: marlex pharmaceuticals, inc. new castle, de 19720 rev. 09/18b
Information for Patients:
Information for patients patients should be cautioned that methocarbamol may cause drowsiness or dizziness, which may impair their ability to operate motor vehicles or machinery. because methocarbamol may possess a general cns-depressant effect, patients should be cautioned about combined effects with alcohol and other cns depressants.
Package Label Principal Display Panel:
Principal display panel - 750 mg ndc 71610-242 - methocarbamol, usp 750 mg tablets - rx only bottle label 750 mg