Description and Composition of Robaxin
Table of Contents
Uses and Indications of RobaxinRobaxin is indicated as an adjunctive therapy for the relief of discomfort associated with acute painful musculoskeletal conditions. Methocarbamol is also indicated for control of muscle spasm in tetanus
Dosage and Administration of Robaxin
For Oral use in adultInitial: 1.5gm of Robaxin is taken qds or 4 times daily Maintenance: 1 gm qds or 4 times daily. For the first 48 to 72 hours, 6 gm per day is recommended. For severe conditions, 8 g daily in divided doses may be administered and thereafter reduced to approximately 4 g or as directed by physician
Usage of Robaxin in TetanusRobaxin does not replace the usual procedure of tracheotomy, debridement, tetanus antitoxin, penicillin etc used in the treatment of tetanus. Rather, methocarbamol injection is added to this regimen.
Pharmacology and Mechanism of Action of RobaxinRobaxin is a centrally acting skeletal muscle relaxant. Its mechanism of action has not been established, but may be due to general CNS depression. The drug has no direct action on the contractile mechanism of striated muscle, motor endplate or nerve fiber, it does not directly relax tensed skeletal muscles.
Pharmacokinetics of RobaxinRobaxin is rapidly absorbed from the gastrointestinal tract following oral administration. Methocarbamol has an onset of action of 30 minutes. Peak plasma levels occur approximately 2 hours after administration of 2 gm. The half life is from 1 to 2 hours. Methocarbamol is metabolized, probably in the liver and excreted in urine primarily as the glucuronide and sulphate conjugates of its metabolites. A Small amount is excreted in faeces.
Side Effects of RobaxinSome side effects associated with the use of Robaxin include the following
- Rash conjunctivitis with nasal congestion
- Blurred vision
Precautions, Warnings and Use during Pregnancy
- Robaxin may impair concentration, patients so affected should not drive or operate machinery
- Methocarbamol is not recommended during pregnancy, especially during early pregnancy or in women who may become pregnant, unless potential benefits outweigh potential hazards.
- It is not known whether methocarbamol is excreted in breast milk. Exercise caution when administering to nursing women.
- Safety and efficacy of methocarbamol in children below 12 yrs. Old has not been established, except