Side Effects of Robaxin-V for Canines

Robaxin-V, also called methocarbamol, helps control muscle spasms in dogs caused by injury, neural issues, toxicity or disease. Available in both injectable and oral forms, the drug works through the central nervous system to disrupt abnormal signals causing muscle tremors. Robaxin-V may have a few side effects.

  1. Salivation and Vomiting

    • High doses of Robaxin-V may cause salivation or vomiting in your dog. Nausea may occur even if the dose isn't high. Nausea manifests as either salivation and/or vomiting. If you notice your dog salivating when first starting the medication, keep an eye on him and notify your veterinarian if salivation continues with subsequent doses. Address vomiting, however, as soon as possible. If your dog vomits soon after taking Robaxin-V, he may have vomited it back up.

    Drowsiness

    • Don't be concerned if your dog sleeps more often than usual or seems less playful. Drowsiness, while not as common as salivation or vomiting, is a potential side effect of Robaxin-V. If your dog has no interest in playing, eating or other normal behaviors, contact your veterinarian.

    Ataxia or Weakness

    • Your dog may have trouble standing or moving around as easily as it could prior to taking Robaxin-V. The drug depresses the central nervous system, which may cause side effects in the nervous system and the muscles themselves. Your dog may experience a neurological issue called ataxia--which presents as incoordination or stumbling--or muscle weakness that is general or localized. If either ataxia or weakness is observed, contact your veterinarian.

    Darkened Urine

    • Your dog's urine may seem darker than usual after starting Robaxin-V; this is not a cause for concern. This is not an overly common side effect, but don't hesitate to contact your veterinarian if you are concerned about it.

    Drug Interactions

    • Since Robaxin-V is a central nervous system depressant, do no administer it with other drugs that act at the central nervous system. Tell your veterinarian if your dog is already on other medications. If given with other CNS-depressants, the result may be additive, leading to excessive side effects.