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Robaxan: Full Drug Profile

Medically reviewed by Min Clinic Staff | Updated: January 2026

Robaxan - General Information

A centrally acting muscle relaxant whose mode of action has not been established. It is used as an adjunct in the symptomatic treatment of musculoskeletal conditions associated with painful muscle spasm. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1206)

 

Pharmacology of Robaxan

Robaxan is a central muscle relaxant for skeletal muscles, used to treat spasms. It is structurally related to guaifenesin. Robaxan's exact mechanism of causing skeletal muscle relaxation is unknown. It is thought to work centrally, perhaps by general depressant effects. It has no direct relaxant effects on striated muscle, nerve fibers, or the motor endplate. It will not directly relax contracted skeletal muscles. The drug has a secondary sedative effect.

 

Robaxan for patients

 

Robaxan Interactions

No information available.

 

Robaxan Contraindications

Methocarbamol Tablets are contraindicated in patients hypersensitive to any of the ingredients.

 

Additional information about Robaxan

Robaxan Indication

For use as an adjunct to rest, physical therapy, and other measures for the relief of discomforts associated with acute, painful musculoskeletal conditions.

Mechanism Of Action
The mechanism of action of methocarbamol in humans has not been established, but may be due to central nervous system depression. It has no direct action on the contractile mechanism of striated muscle, the motor end plate or the nerve fiber.
Food Interactions
Avoid alcohol.
Generic Name
Methocarbamol
Drug Category
Muscle Relaxants, Central
Drug Type
Small Molecule; Approved
Other Brand Names containing Methocarbamol
AHR 85; Avetil; Delaxin; Etroflex; Forbaxin; Glycerylguaiacolate carbamate; Glycerylguajacol-Carbamat; Guaiacol glyceryl ether carbamate; Guaiphenesin carbamate; Guaiphenesine carbamate; Lumirelax; Methocal; Metocarbamol; Metocarbamolo; Metofenia; Metofenina; Miolaxene; Miorilas; Miowas; Myolaxene; Neuraxin; Parabaxin; Perilax; Reflexyn; Relestrid; Robamol; Robaxan; Robaxin; Robaxine; Robaxon; Robinax; Romethocarb; Surquetil; Traumacut; Tresortil;
Absorption
Rapid. Onset of action is about 30 minutes after oral administration.
Toxicity (Overdose)
Symptoms of overdose include blurred vision, coma, drowsiness, low blood pressure, nausea, and seizures.
Biotransformation
Hepatic.
Half Life
1.14-1.24 hours
Dosage Forms of Robaxan
Tablet Oral
Chemical IUPAC Name
[2-hydroxy-3-(2-methoxyphenoxy)propyl] carbamate
Chemical Formula
C11H15NO5
Organisms Affected
Humans and other mammals