Which species have cited Methocarbamol dosing data?

Methocarbamol dosing in the ExoticRx formulary covers 2 species: Cat (Domestic), Dog (Domestic).

Is Methocarbamol a controlled substance?

Methocarbamol is not federally scheduled in the US. Controlled-drug status differs by country — verify your local rules.

Methocarbamol

US brand names:Robaxin-V

Calculate dosage

Sourced from published veterinary references. Awaiting credentialed clinical reviewer — our editorial process.

Methocarbamol is dosed at 44–220 mg/kg IV q8-12h to effect; total max 330 mg/kg/day in dogs, per Plumb's Veterinary Drug Handbook, 9th Ed, p.855 (corpus PDF p.882) — Methocarbamol, Dosages, DOGS/CATS, Injectable label dosage; q8h IV interval corroborated by Papich 5th Ed p.509 (PDF p.537) 'Dogs and Cats: 44 mg/kg q8h PO or IV on the first day'. Verify against current literature before clinical use.

Drug Class

Neurological

Routes

POIV

Indications

intervertebral disk disease adjunctmuscle spasmstrychnineTremorgenic mycotoxin poisoningTremorgenic poisoning

Mechanism of Action

Centrally-acting skeletal muscle relaxant. Exact mechanism unclear; likely depresses polysynaptic reflexes in the spinal cord.

Side effects & warnings

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 with Methocarbamol dosing data (3 dose rules)

Cat (Domestic)Dog (Domestic)

Species references:All Cat (Domestic) drugs All Dog (Domestic) drugs

Evidence levels across 3 dose rules

Strong×1Moderate×2

Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.

Backed by 3 published sources

· Plumb's Veterinary Drug Handbook, 9th Ed, p.855 (corpus PDF p.882) — Methocarbamol, Dosages, DOGS/CATS, Injectable label dosage; q8h IV interval corroborated by Papich 5th Ed p.509 (PDF p.537) 'Dogs and Cats: 44 mg/kg q8h PO or IV on the first day'
· ROBAXIN-V INJECTION - Methocarbamol Injectable and Tablets [US Product Label for Dogs, Cats, and Horses]. Fort Dodge; 2003. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=090a3d3d-92c3-4c30-a648-436461f81702 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.882 (2026-08-01).
· ROBAXIN-V TABLETS - Methocarbamol Tablet [US Product Label for Dogs and Cats]. Zoetis; 2003. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=090a3d3d-92c3-4c30-a648-436461f81702; ROBAXIN - Methocarbamol Tablets [AU Product Label for Dogs and Cats]. Elanco Australasia Pty Ltd; 2021. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=090a3d3d-92c3-4c30-a648-436461f81702 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.882 (2026-08-01).

Sample dosing (2 of 3 cited rules)

A dog/cat sample is shown here. Cited dosing for all 2 species — reptiles, birds, pocket pets, livestock, and equine — is free on the per-species pages above. Pro adds the weight-based calculator for every species.

Species	Route	Dose	Frequency	Evidence	Source
Dog (Domestic)	IV	44–220 mg/kg	q8-12h to effect; total max 330 mg/kg/day	Strong	Plumb's Veterinary Drug Handbook, 9th Ed, p.855 (corpus PDF p.882) — Methocarbamol, Dosages, DOGS/CATS, Injectable label dosage; q8h IV interval corroborated by Papich 5th Ed p.509 (PDF p.537) 'Dogs and Cats: 44 mg/kg q8h PO or IV on the first day'
Cat (Domestic)	IV	44–220 mg/kg	To effect	Moderate	ROBAXIN-V INJECTION - Methocarbamol Injectable and Tablets [US Product Label for Dogs, Cats, and Horses]. Fort Dodge; 2003. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=090a3d3d-92c3-4c30-a648-436461f81702 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.882 (2026-08-01).

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Other formulations of Methocarbamol

Methocarbamol Injectable

Calculate Dosage for Methocarbamol