Methocarbamol: Difference between revisions
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MDElliottMD (talk | contribs) Tier 1 taxonomy consolidation: removed redundant Category:Muscle_Relaxants (canonical already present) |
MDElliottMD (talk | contribs) parser-claude: Methocarbamol MedTemplate refill, Top 300 stub upgrade |
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{{MedTemplate | {{MedTemplate | ||
| generic | | generic = Methocarbamol | ||
| brand | | brand = Robaxin (oral, injectable) | ||
| structure | | structure = | ||
| classes | | classes = [[:Category:Skeletal muscle relaxants|Skeletal muscle relaxant (centrally-acting)]] | ||
| | | uses = <vote slug="acute-muscle-spasm-use">Short-term relief of muscle spasm from acute musculoskeletal conditions (FDA)</vote>, <vote slug="tetanus-adjunct-use">Tetanus adjunct (FDA, IV; rarely needed in current practice with immunization coverage)</vote> | ||
| | | starting_dose = Oral: 1500 mg PO QID for 2-3 days (load), then 750-1500 mg QID maintenance. IV/IM: 1000 mg every 8 hours for acute spasm | ||
| | | preparations = Tablets 500, 750 mg; injection 100 mg/mL | ||
| | | fda_max = 8 g/day (oral, short-term load); 6 g/day (chronic) | ||
| | | pill_id = | ||
| routes | | routes = Oral, intramuscular, intravenous | ||
| onset | | onset = ~30 minutes (oral) | ||
| duration | | duration = 4-6 hours | ||
| halflife | | halflife = 1-2 hours<ref name="robaxin-label">FDA Prescribing Information, Robaxin (methocarbamol), Pfizer/various, current revision. https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/011011s032lbl.pdf</ref> | ||
| bioavailability | | bioavailability = ~100% (oral; near-complete absorption)<ref name="robaxin-label" /> | ||
| pregnancy | | pregnancy = Limited human data.{{citation needed}} | ||
| legal | | legal = [[USLegal:Prescription only|Rx-only]] in US. Not a controlled substance, distinguishing it from carisoprodol which is Schedule IV<ref name="robaxin-label" /> | ||
| | | mechanism = <vote slug="methocarbamol-mech-claim">Centrally-acting skeletal muscle relaxant with mechanism not fully elucidated; effects appear mediated through general central nervous system depression rather than direct muscle relaxation or specific receptor activity. The lack of receptor-specific action explains both the relatively mild side-effect profile and the variable efficacy across patients.</vote> May cause harmless '''brown, black, blue, or green urine discoloration''' (the classic counseling point). Not associated with the abuse-liability concerns of carisoprodol or the anticholinergic burden of cyclobenzaprine, making methocarbamol a reasonable choice in elderly patients<ref name="robaxin-label" />. | ||
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[[Category: | == References == | ||
<references /> | |||
[[Category:Skeletal muscle relaxants]] | |||