The nitty gritty: Methocarbamol (trade name Robaxin) is a central muscle relaxant used to treat skeletal muscle spasms. It is the carbamate of guaifenesin, but does not produce guaifenesin as a metabolite, since the carbamate bond is not hydrolyzed metabolically; metabolism is by Phase I ring hydroxylation and O-demethylation, followed by Phase II conjugation. All of the major metabolites are unhydrolyzed carbamates.
Methocarbamol or Robaxacet is marketed under different names when presented in combination with other active ingredients. In combination with acetaminophen, its trade name is Robaxacet, whereas Robax Platinum is the trade name for a formulation of methocarbamol and ibuprofen. A combination of methocarbamol and aspirin is marketed as Robaxisal. Unlike other carbamates such as Carisoprodol and Meprobamate, Methocarbamol has little to no abuse potential.
Methocarbamol with acetaminophen, and methocarbamol with ibuprofen are both sold as Nuprin Muscle & Back Pain Relief for the Shoppers Drug Mart chain in Canada.
As an alternative to medication for the treatment of musculo-skeletal aches & pains, consider trying a natural approach much as chiropractic or massage.
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