Dog · Canis lupus familiaris · typical adult weight 2.00–80.00 kg
Methocarbamol is dosed at 15–44 mg/kg PO q8h in dogs, 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".. Methocarbamol is used in dogs for Muscle spasm, intervertebral disk disease adjunct. Routes documented in dogs: PO. A typical adult dog weighs 2.00–80.00 kg. ExoticRx lists 1 cited dose rule for Methocarbamol in dogs, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Robaxin-V
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 15–44 mg/kg | q8h | Short-term | Muscle spasm, intervertebral disk disease adjunct | 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". |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
The sources disagree for this combination. The ranges below do not overlap on a comparable route. This is not an error in one of them — published veterinary references differ, and reconciling them for a particular patient is a clinical judgement.
| Dose (mg/kg) | Route | Source | As printed |
|---|---|---|---|
| 20–45 | PO | BSAVA Small Animal Formulary, 10th ed — Part A (Canine and Feline)p.273 | 20-45 mg/kg p.o. q8h. Very high doses may be required for tetanus. It is recommended that the dose do |
| 330 | PO | BSAVA Small Animal Formulary, 10th ed — Part A (Canine and Feline)p.273 | or tetanus. It is recommended that the dose does not exceed 330 mg/kg, although serious toxicity or death has not been reported after overdoses. |
| 44 | PO | Papich Saunders Handbook of Veterinary Drugs, 4th edp.537 | • 44 mg/kg q8h PO or IV on the first day, and then 22-44 mg/kg q8h PO. Up to |
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Centrally-acting skeletal muscle relaxant. Exact mechanism unclear; likely depresses polysynaptic reflexes in the spinal cord.
FDA-approved for veterinary use (Robaxin-V). Sedation, drooling. IV: give slowly (do not exceed 2 ml/min). Used for tremors, muscle spasms, strychnine poisoning, and metaldehyde toxicosis.
Species-specific contraindications and adverse-reaction reports for dogs may differ from canine / feline reference data — consult the primary citations listed with each rule.
Methocarbamol dose range in dogs, with cited source references: PO 15–44 mg/kg q8h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Methocarbamol in dogs: PO.
Cited course lengths for Methocarbamol in dogs include: Short-term. Duration depends on the indication — match it to the specific dose rule in the table above.
Methocarbamol is indicated in dogs for: Muscle spasm, intervertebral disk disease adjunct.
These are general warnings for Methocarbamol across species; consult the dog dosing table above for species-specific guidance. FDA-approved for veterinary use (Robaxin-V). Sedation, drooling. IV: give slowly (do not exceed 2 ml/min). Used for tremors, muscle spasms, strychnine poisoning, and metaldehyde toxicosis.
Why a species-specific page? Methocarbamol pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in dogs — 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.
| 22–44 | PO | Papich Saunders Handbook of Veterinary Drugs, 4th edp.537 | • 44 mg/kg q8h PO or IV on the first day, and then 22-44 mg/kg q8h PO. Up to |
| 130 | — | Papich Saunders Handbook of Veterinary Drugs, 4th edp.537 | 130 mg/kg for severe conditions. |
Figures are transcribed from the cited page or table of each held edition and are shown for reference only. They are not dose recommendations, they do not feed the calculator, and none has been reviewed by a veterinarian.