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Product Info
How to Use
Customer Reviews
Product Info
What is Methocarbamol?

Methocarbamol is a prescription muscle relaxant used in dogs and cats to treat muscle spasms. Methocarbamol requires a prescription from your veterinarian, and is sold per tablet.


Dogs, Cats, and Horses

  • Relaxes muscles and reduces muscle tremors caused from various diseases, traumas, or ingesting toxic substances
  • Helps to treat muscle spasms caused from intervertebral disk disease ("slipped disk") in dogs
  • Also treats permethrin poisoning in cats, which can occur when permethrin from dog flea medication is ingested
How it Works:

Methocarbamol is a muscle relaxant that acts on the central nervous system to relax the muscles.


Give methocarbamol exactly as directed by your veterinarian. Do not give it in larger doses or give for longer than recommended by your veterinarian.

Brand Name:

Robaxin (Schwarz Pharma), Robaxin V (Fort Dodge)

Generic Name:


What is the most important information I should know about methocarbamol:

Methocarbamol is a prescription medication FDA approved for veterinary use in dogs, cats, and horses. Methocarbamol is available as 500 mg tablets. The usual dose to treat muscle spasms in dogs and cats is 20 to 30 mg per lb every 8 to 12 hours on the first day, then 10 to 30 mg per pound every 8 to 12 hours. For horses, the usual dose using methocarbamol tablets is from 4.4 to 20 mg per pound up to 6.6 to 30 mg per pound per dose.

What is Methocarbamol:

Methocarbamol is a muscle relaxant used to treat muscle spasms. Methocarbamol may also be used for purposes other than those listed in this guide.

What should I discuss with my veterinarian before giving methocarbamol to my pet:

Tell your veterinarian if your pet is pregnant or lactating.

How should this medication be given:

Give this medication exactly as directed by your veterinarian. If you do not understand the directions ask the pharmacist or veterinarian to explain them to you. Store methocarbamol at room temperature away from moisture and heat. Keep this medication away from children and pets.

What happens if I miss giving a dose:

Give the missed dose as soon as you remember during the same day. However, if you don't remember until the next day, skip the dose you missed and give only the next regularly scheduled dose. Do not give a double dose of the medication.

What happens if I overdose the pet:

Seek emergency veterinary medical treatment. Symptoms of methocarbamol overdose include extreme sedation, incoordination and loss of reflexes. Dogs and cats may see drooling and vomiting.

What should I avoid while giving Methocarbamol to my pet:

Methocarbamol should not be used in animals allergic to it. The safe use in pregnant or nursing animals has not been established.

What are the possible side effects of Methocarbamol:

Methocarbamol may cause drowsiness. The medication may cause a darkening of the urine. For dogs and cats, if any of the following serious side effects occur, stop giving methocarbamol and seek emergency veterinary medical attention: an allergic reaction (difficulty breathing, swelling of the lips, tongue or face; hives). Side effects that can occur in dogs and cats may include weakness, stumbling, incoordination, drooling, and vomiting. Methocarbamol may discolor the urine. Talk to your veterinarian about any side effect that seems unusual or bothersome to the animal.

What other drugs will affect Methocarbamol:

When used in combination with other medications that may cause drowsiness, the sedative effect of methocarbamol will increase. Tell your veterinarian if your pet is being given any other medications such as antihistamines (chlorpheniramine), gabapentin, metoclopramide, opioid narcotics, tranquilizers (acepromazine), or any other medication that may cause drowsiness. Drugs other than those listed may also interact with methocarbamol. Talk to your veterinarian or pharmacist before giving any prescription or over the counter medicines including vitamins, and supplements.

Where can I get more information:

Your pharmacist has additional information about Methocarbamol written for health professionals that you may read. Call your veterinarian for medical advice about any side effects to your pet. You may report side effects to the FDA at 1-800-FDA-1088.

How to Use
  • Give Methocarbamol exactly as directed by your veterinarian. Do not give it in larger doses or give for longer than recommended by your veterinarian.

Methocarbamol may cause urine to change color.

Dogs and Cats:
All weights
The usual dose is 20-30 mg per pound of pet's body weight every 8-12 hours for first day, then 10-30 mg per pound every 8-12 hours, thereafter.
Do not use!

Should be stored at room temperature.

Methocarbamol 500 mg Tablets:
Active Ingredients
500 mg
Customer Reviews
Methocarbamol is rated 5.0 out of 5 by 1.
Rated 5 out of 5 by from hip pain 11 yo boxer has started to limp took to vet had xrays no arthritis,blood work done all normal prescribed this medicin with carafate, and 10 days of rymaddyl, my dog has been active all her life now does 850 ft down the side of drive and 850 back. and amazing results she is a totally diferent dog still little gait off but well improve i thing from pain med but amazing.
Date published: 2013-11-07
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Take with food or on an empty stomach?

Asked by: Mary
Either with or without food will be fine. If your pet takes it without food and has any nausea vomiting or diarrhea, then give the medication with food and see if those symptoms improve.
Answered by: Lilli Pharmacist
Date published: 2015-09-02


Can this med cause gas in dogs
Asked by: Brzshak1
This is not a known side effect of Methocarbamol. Please consult your veterinarian.
Answered by: Stephanie Duesler, Pharm. D, MBA
Date published: 2015-03-27

Do you sell 50 mg capsules of methocarbamol and 25 mg tabs of gabapentin?

Asked by: Kathy
We carry Methocarbamol 500 mg tablets and Gabapentin 100mg and 300 mg capsules only.
Answered by: Lisa M
Date published: 2014-08-08

How long can my dog stay on metocarbmol?

Asked by: Mel
Please consult with your veterinarian.
Answered by: Lilli Pharmacist
Date published: 2013-12-10

How soon can I see results in my dog when giving methocarbarnol?

Asked by: maxwell
i seen imediate diference
Answered by: nightmission10
Date published: 2013-11-08

Is pet methocarbomal the same as prescribed for people?

Asked by: SweetP414
Yes, this is a human medication which is used off label for pets.
Answered by: Janine M./Pharmacist
Date published: 2013-09-23

The 750 mg methocarbamol I purchased from petmeds looks different from the last order? Should I be concerned?

The pill came today as round with numbers 4211 on top and a symbol thats similar to a check mark on the bottom. The last order the pill was tic tac like.
Asked by: Concerned Parent
Methocarbamol is a generic drug made by many manufacturers. Tablet size, shape, color, markings, etc vary by company. The medication in the vial should match the description on the outside label. PetMeds carries only the 500mg strength of Methocarbamol.
Answered by: Lisa M
Date published: 2012-10-03

methocarbamol 500 mg

Is human methocarbamol the same as dogs? If so, how many mg should I give to a 55-65 lb dog? I have 500 mg for humans. I asked about this on the wrong pill eairler, Melicam I think.... Need answer for this one though.
Asked by: tekado
Hello, Yes, methocarbamol for humans is the same active ingredient for veterinary use; however, since the medication was not prescribed for a pet, you should consult your veterinarian before attempting to administer the pills. Thank you.
Answered by: Rich - Student Pharmacist
Date published: 2012-08-03
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