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Methocarbamol

Methocarbamol is an active ingredient of the class «muscle relaxant».

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Chemical compound

Informational only — not medical advice. Ask a doctor or pharmacist; never change a dose on your own.

What it is used for

The injectable form of methocarbamol is indicated as an adjunct to rest, physical therapy, and other measures for the relief of discomfort associated with acute, painful musculoskeletal conditions.

US label

How it works

Class: muscle relaxant

Common side effects

The following adverse reactions have been reported coincident with the administration of methocarbamol. Some events may have been due to an overly rapid rate of intravenous injection.

US label

Who should not take it

ROBAXIN Injectable should not be administered to patients with known or suspected renal pathology. This caution is necessary because of the presence of polyethylene glycol 300 in the vehicle.

US label

Pregnancy and breastfeeding

Teratogenic Effects-Pregnancy Category C Animal reproduction studies have not been conducted with methocarbamol. It is also not known whether methocarbamol can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity.

Methocarbamol and/or its metabolites are excreted in the milk of dogs; however, it is not known whether methocarbamol or its metabolites are excreted in human milk.

Excerpts from the US prescribing label (public domain), copied without changes.

Interactions

Recorded interactions from open sources (Wikidata, US labels). The list is not complete — ask a pharmacist.

Brand names

United States

Atmeksi · Robaxin · ROBAXIN-750

Canada

Robaxin

Other trade names

Delaxin · Forbaxin · Miolaxin · Neuraxin

Approval status

US Food and Drug Administration
prescription · since 1957
Health Canada
over the counter · marketed
First approval anywhere
1957

Codes

ATC
M03BA03
RxNorm CUI
6845
ChEMBL
CHEMBL1201117
PubChem CID
4107
UNII
125OD7737X
Wikidata
Q411456

Frequently asked questions

What is Methocarbamol used for?

Methocarbamol is used for: Pain, Spasm, Tetanus, Inflammatory myopathy, and Muscle cramp.

What kind of medicine is Methocarbamol?

Methocarbamol is an active ingredient of the class «muscle relaxant».

What are the brand names of Methocarbamol?

Brand names of Methocarbamol include Atmeksi, Robaxin, ROBAXIN-750, Delaxin, Forbaxin, Miolaxin, and Neuraxin.

Sources and licences

Updated November 15, 2026