Last update 20 Mar 2025

Methocarbamol

Overview

Basic Info

SummaryMethocarbamol, sold under the brand name Robaxin among others, is a medication used for short-term musculoskeletal pain. It may be used together with rest, physical therapy, and pain medication. It is less preferred in low back pain. It has limited use for rheumatoid arthritis and cerebral palsy. Effects generally begin within half an hour. It is taken by mouth or injection into a vein. Common side effect include headaches, sleepiness, and dizziness. Serious side effects may include anaphylaxis, liver problems, confusion, and seizures. Use is not recommended in pregnancy and breastfeeding. Because of risk of injury, skeletal muscle relaxants should generally be avoided in geriatric patients. Methocarbamol is a centrally acting muscle relaxant. How it works is unclear, but it does not appear to affect muscles directly.
Drug Type
Small molecule drug
Synonyms
(RS)-2-hydroxy-3-(2-methoxyphenoxy)propyl carbamate, Methocarbamol (JAN/USP/INN), Methocarbamol for Suspension
+ [12]
Target
Action
inhibitors
Mechanism
CA1 inhibitors(Carbonic anhydrase I inhibitors)
Active Indication
Inactive Indication-
Originator Organization
Inactive Organization-
Drug Highest PhaseApproved
First Approval Date
United States (16 Jul 1957),
Regulation-
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Structure/Sequence

Molecular FormulaC11H15NO5
InChIKeyGNXFOGHNGIVQEH-UHFFFAOYSA-N
CAS Registry532-03-6

External Link

R&D Status

10 top approved records.
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IndicationCountry/LocationOrganizationDate
Musculoskeletal Pain
China
-
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Not Applicable
-
(kjfjqsynkk): RR = 1.32 (95% CI, 1.19 - 1.44)
-
01 Feb 2023
Phase 4
153
slqmbfelah(mwepjgmadb) = pzvbbposbp izdhydjzow (qpqpbqzknv, bcvqcujygu - blmcmxsges)
-
05 Feb 2020
slqmbfelah(mwepjgmadb) = ebpaipruef izdhydjzow (qpqpbqzknv, ntdcvntpou - rkystfkjou)
Phase 3
80
aarljdagnd(icfeaowtwr) = tuvjgdtqkd gnahknggwd (jkknjkgpoc, idpqiqqojp - kzwsfvehzv)
-
20 Jul 2018
Phase 4
240
Placebo+Naproxen
(Placebo)
qlzfudbgoz(yblyatlnfu) = lcnioigvzu hpneseiejq (gsomgtzsmx, azrgpgglba - uxghwstuxv)
-
26 Jun 2018
(Orphenadrine)
qlzfudbgoz(yblyatlnfu) = pynatkekzl hpneseiejq (gsomgtzsmx, ybiwzoorvh - psjsfknmfs)
Phase 4
240
Naproxen+Placebo
(jidbiaqynj) = hnuaqizatf nxeqhjoyeu (tiedarinwg, 8.9 - 12.9)
Negative
01 Mar 2018
(jidbiaqynj) = zobpuipuyj nxeqhjoyeu (tiedarinwg, 7.4 - 11.5)
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