Equine · Equus caballus · typical adult weight 350.00–700.00 kg
Methocarbamol (Equine Injectable) is dosed at 4.4–22 mg/kg IV IV to effect - papich prints q8h for large animals in horses, per Plumb's Veterinary Drug Handbook, 10th ed, Methocarbamol monograph, corpus PDF p.882. DOGS/CATS (label dosage, FDA-approved): Injectable - "For relief of moderate conditions: 44 mg/kg IV initial dose"; "For controlling severe effects of strychnine and tetanus: 55 - 220 mg/kg IV initial dose... The […]" Oral (tablets) - "132 mg/kg PO on Day 1 in 2 or 3 equally divided doses (ie, every 8 to 12 hours), then 66 - 132 […]" DOGS, intervertebral disk disease (extra-label): "Anecdotal dosages of 15 - 20 mg/kg PO every 8 hours are usually noted." HORSES (label dosage, FDA-approved): "For moderate conditions: 4.4 - 22 mg/kg IV to effect"; "For severe conditions (tetanus): 22 - 55 mg/kg IV". | ORIGINAL SOURCE THE BOOK CITES (2026-08-20): the dose row carries superscript 1 — "4.4 - 22 mg/kg IV to effect1 * Ga6ape,(-,: Concurrent use may result i" — which resolves in the monograph's own reference list to: ROBAXIN-V INJECTABLE - Methocarbamol Liquid (Solution) [US Product Label for Dogs, Cats, and Horses]. Kinetic Technologies, LLC; 2017. This records what the handbook attributes the figure to. It is NOT a statement that the reference was read or that it validates the dose.. Methocarbamol (Equine Injectable) is used in horses for Muscle spasm, rhabdomyolysis (tying up). Routes documented in horses: IV. A typical adult horse weighs 350.00–700.00 kg. ExoticRx lists 1 cited dose rule for Methocarbamol (Equine Injectable) in horses, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Robaxin-V
| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| IV | 4.4–22 mg/kg | IV to effect - papich prints q8h for large animals | Muscle spasm, rhabdomyolysis (tying up) | Moderate | Plumb's Veterinary Drug Handbook, 10th ed, Methocarbamol monograph, corpus PDF p.882. DOGS/CATS (label dosage, FDA-approved): Injectable - "For relief of moderate conditions: 44 mg/kg IV initial dose"; "For controlling severe effects of strychnine and tetanus: 55 - 220 mg/kg IV initial dose... The […]" Oral (tablets) - "132 mg/kg PO on Day 1 in 2 or 3 equally divided doses (ie, every 8 to 12 hours), then 66 - 132 […]" DOGS, intervertebral disk disease (extra-label): "Anecdotal dosages of 15 - 20 mg/kg PO every 8 hours are usually noted." HORSES (label dosage, FDA-approved): "For moderate conditions: 4.4 - 22 mg/kg IV to effect"; "For severe conditions (tetanus): 22 - 55 mg/kg IV". | ORIGINAL SOURCE THE BOOK CITES (2026-08-20): the dose row carries superscript 1 — "4.4 - 22 mg/kg IV to effect1 * Ga6ape,(-,: Concurrent use may result i" — which resolves in the monograph's own reference list to: ROBAXIN-V INJECTABLE - Methocarbamol Liquid (Solution) [US Product Label for Dogs, Cats, and Horses]. Kinetic Technologies, LLC; 2017. This records what the handbook attributes the figure to. It is NOT a statement that the reference was read or that it validates the dose. |
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These ranges are per kg. Enter your horse's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Centrally-acting skeletal muscle relaxant that depresses multisynaptic reflex arcs. Does not directly relax skeletal muscle or depress the neuromuscular junction.
For horses and cattle. IV injection only — administer slowly (not more than 2ml/min per kg BW). May cause sedation, salivation, and ataxia. Do not use in animals with known renal impairment.
Species-specific contraindications and adverse-reaction reports for horses may differ from canine / feline reference data — consult the primary citations listed with each rule.
Methocarbamol (Equine Injectable) dose range in horses, with cited source references: IV 4.4–22 mg/kg IV to effect - papich prints q8h for large animals. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Methocarbamol (Equine Injectable) in horses: IV.
Methocarbamol (Equine Injectable) is indicated in horses for: Muscle spasm, rhabdomyolysis (tying up).
These are general warnings for Methocarbamol (Equine Injectable) across species; consult the horse dosing table above for species-specific guidance. For horses and cattle. IV injection only — administer slowly (not more than 2ml/min per kg BW). May cause sedation, salivation, and ataxia. Do not use in animals with known renal impairment.
Why a species-specific page? Methocarbamol (Equine Injectable) pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in horses — the rules above are the citations specific to this species, not generic recommendations.
Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.