Skip to Main Content ›
FREE Shipping on orders over $49
15% OFFCoupon Code:
Expires in:
days hrs min secs
 15% OFF w/code
Expires in:
days hrs min secs
My Account


Rx Info
1. We'll ask for your vet's info during checkout.
2. We verify your prescription and ship your order!
Starts $0.31 $0.22 per capsule
Ships in one business day or less
Select a Tablet Size:
100 mg Capsule
Price w/coupon 15OFF
300 mg Capsule
Price w/coupon 15OFF
Starts $0.31 $0.22 per tablet
Ships in one business day or less
Please select all product options.
Enter Quantity:
Please select all product options.
Product Info
How to Use
Customer Reviews
Product Info

What is Gabapentin?

Gabapentin is a medication for the treatment of seizures. It is also used to help with chronic pain. Although Gabapentin is not FDA-approved for use in veterinary medicine, it is a commonly accepted practice for veterinarians to prescribe this medication for dogs. Gabapentin requires a prescription from your veterinarian, and is sold per capsule.




  • Treats seizures
  • Helps manage chronic pain often associated with cancer or arthritis

How does Gabapentin work?

Gabapentin stabilizes electrical activity in the brain which prevents seizures caused by excessive electrical activity. Gabapentin mimics the activity of GABA (a neurotransmitter) which helps to calm the nerve activity in the brain.


Unless the benefits outweigh the risk, do not use Gabapentin in pregnant or nursing pets.

Brand Name:


Generic Name:


What is the most important information I should know about Gabapentin?

Gabapentin is a prescription medication not FDA approved for veterinary use; however, it is a commonly accepted practice for veterinarians to use this medication in dogs. Gabapentin is available as 100 mg and 300 mg capsules. The usual dose to treat seizures in dogs is 4.5 to 13.5 mg per lb every 8 to 12 hours. As an aid in chronic pain treatment or cancer pain in dogs, the usual dose is 1.4 mg per lb once a day.

What should I discuss with my veterinarian before giving Gabapentin to my pet?

Tell your veterinarian if your pet has kidney disease. The dose of Gabapentin may need to be adjusted. Unless the benefit outweighs the risks do not use Gabapentin in pregnant or nursing pets.

How should Gabapentin 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. Do not give antacids within 2 hours of giving Gabapentin. Antacids can affect Gabapentin blood levels. Drug interactions may occur when giving any narcotics such as hydrocodone or morphine. Do not suddenly stop the use of Gabapentin. Store Gabapentin at room temperature away from moisture and heat. Keep this medication away from children.

What are the potential side effects of Gabapentin?

If any of the following serious side effects occur, stop giving Gabapentin 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 may include drowsiness, loss of balance, swelling of the limbs, and vomiting or diarrhea. Talk to your veterinarian about any side effect that seems unusual or bothersome to your pet.

What happens if I miss giving a dose of Gabapentin?

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 my pet on Gabapentin?

Seek emergency veterinary medical treatment. Symptoms of Gabapentin overdose include reduced activity, excessive sleepiness, loss of balance, and depression.

What should I avoid while giving Gabapentin to my pet?

Gabapentin should not be used in pets allergic to it. Do not use in pregnant or nursing pets. Use with caution in pets with kidney disease. Do not give antacids within 2 hours of giving Gabapentin. Consult your veterinarian before giving any narcotic such as hydrocodone or morphine since drug interactions can occur.

What other drugs will affect Gabapentin?

Tell your veterinarian if your pet is being given antacids or narcotics for pain. Drugs other than those listed may also interact with Gabapentin. Talk to your veterinarian or pharmacist before giving any prescription or over the counter medicines including vitamins, and supplements.

How to Use
  • Please refer to the chart below for proper dosage.

Do not give antacids within 2 hours of giving this medication.

All weights
For seizures: 4.5 mg-13.5 mg per pound every 8-12 hours.
For pain: 1.4 mg per pound once a day.

Should be stored at room temperature, away from moisture and light.

Gabapentin 100 mg:
Active Ingredients
100 mg
Gabapentin 300 mg:
Active Ingredients
300 mg
Customer Reviews
Gabapentin is rated 4.9 out of 5 by 7.
Rated 4 out of 5 by from A happy puppy again! My 8 month old mixed breed puppy was put on Gabapentin for pain. He has pinched nerves in his back and was in pain. Before going on meds he was unable to play too much and had a hard time jumping, running, even getting on couches, bed, etc. He has been on it for about 2 weeks now and is so much happier. He is a silly playful puppy again!
Date published: 2017-03-15
Rated 5 out of 5 by from
Date published: 2016-09-26
Rated 5 out of 5 by from Good for pain My elderly Am Staf has thyroid disease, Addison's disease, and blew out his back left knee. We tried rehabbing with a brace, as he does not do well with anesthesia. but it did not go well. So now he limps and favors the leg frequently. The gabapentin is for his pain and it does seem to making walking easier for him and he doesn't limp as much.
Date published: 2015-10-06
Rated 5 out of 5 by from Great Product for Dancing Doberman Disease Dancing Doberman is a Neurological problem that effects a Doberman's back legs. Tremors and leg movement are going on constantly making the dog constantly restless. My Doberman has been on Gabapentin since she was diagnosed at age 7. The Gapapentin has helped to slow the tremors and give her a lot more peace so she is not so restless. Great product for a disease that is not that well known.
Date published: 2015-01-11
Rated 5 out of 5 by from Very helpful My 13year old schnauzer has Cushing's disease , hip dysplasia and an under active thyroid.About 4 months ago I noticed she had problems lying down and she regularly wanted breakfast in bed! Hip dysplasia was diagnosed. She was on symmetrel for a time but it made her vomit. She was put on gabapentin and it immediately made a difference. She has also had tramadol for bad days, changing to metacam or previcox after seeing specialist, but she rarely needs them. The gabapentin is very helpful to her and she can happily continue her hour long walks.
Date published: 2013-12-30
Rated 5 out of 5 by from Positive Quality of Life Benefits Jack is my aging 9 year old greyhound rescue. I adopted Jack when he was 2 years old. He is now showing signs of arthritis and possible canine dementia. It's been a year of veterinary care, specialists, and emergency room visits. Jack would not settle down at night, he was loosing weight, he would pant from pain and seemed anxious. Understand that all of his physiological tests results were normal. These tests included: ultra sounds, blood, urine and X-rays. Even vet specialists were stumped by Jack's symptoms. Rimadyl was the best we could come up with as an answer to Jack's pain. It just didn't help him at night with his sleeplessness and anxiety. Jack's vet and I decided to try Gabapentin to help Jack sleep and aid in his pain relief. The very first time Jack took his Gabapentin he calmed down at night and slept through the night. Jack was up and alert the next morning. We are continuing the Rimadyl along with the Gabapentin. Perhaps more vets should look at Gabapentin for the relief of some of the symptoms of canine dementia and arthritis due to aging. This drug has been life altering in a positive way for my precious 9 year old greyhound, Jack.
Date published: 2013-10-08
Rated 5 out of 5 by from Awesome for seizures/anxiety/pain My 12 year old dog started having episodes of "fly biting" and apparent visual disturbances that would lead to excessive anxiety, panic, panting that would make me nervous watching it and I felt helpless. Knowing the effectiveness of Gapabentin (having used it myself) I insisted on this anti-seizure med to be tried first (once my vet determined seizures were likely the problem). My dog is 50lbs and the vet rx'd 200 mg 3x's per day - WAY TOO MUCH to start. This medication must be increased very slowly, starting w/100mg once per day until you notice the next dose needs to be started. It worked so well and immediately that 100mg worked well for a few weeks, when she showed signs of symptoms, I added the 2nd dose and so on. Now that she is on a therapeutic dose (over a couple months of slowly increasing the dose) about 400mg per day it has helped relax her and works great. It has helped everything including pain in her hips and knee to a degree that is noticeable. I give her the small capsule in a small clump of Gerber or beechnut baby meats - she doesn't even know it is in there and swallows it whole without chewing. I recommend trying this medication before any other anti-seizure medication that has the potential (that gabapentin does NOT) to change personality in a dog, make them aggressive,etc. Try this first! Worked well for me and my dog too, without any personality changes as I knew it would! This medicaiton is under used in pets and not well known, I hope more vets realize what a great medication this is.
Date published: 2011-03-23
  • y_2017, m_3, d_21, h_14
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0
  • cp_1, bvpage1
  • co_hasreviews, tv_1, tr_6
  • loc_en_US, sid_prod11172, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_1800petmeds

My dog is on it for arthritis pain gets diarrhea from it.  Would giving it to her after or with food make a difference?  

Asked by: Laura
Hello Laura, Giving the medication with food will help absorption and stomach upset, so hopefully that will lessen the diarrhea. If it continues though or gets worse, I would consult with your Vet about it. Hope this helps. Thanks
Answered by: Trey W
Date published: 2017-03-02

We are starting out with a quarter tablet and moving to a half. Does this come in tablet form?

Asked by: Jeannette
I'm sorry, we only have capsules in stock at Petmeds for gabapentin.
Answered by: Ben B
Date published: 2017-02-24

Do you need a prescription to purchase?

Asked by: Nichol
Yes you need a prescription for this medication.
Answered by: Ben B
Date published: 2017-02-21

I took my 12 lbs Maltese/shitzu to re yesterday because she was having pain in her back legs... was given Gabapentin along with other two you need to taper it?

Asked by: Mocha
I would recommend taking the prescribed dose as gabapentin does not need to be tapered, but may be increased by the vet if the current dose isn't working well.
Answered by: Ben B
Date published: 2017-02-21

I have a 3 pound dog and I need to Have a compound Would I be able to purchase is medication from you and have a pharmacist compound it for me

Asked by: gia 58
If you call the pharmacy 1-888-738-6331 they can help you figure out other options for giving this medication.
Answered by: Ben B
Date published: 2017-02-21

I have Gabapentin 300 mg capsules. How do I break it down to give to my little dog. He weighs 16 pounds and is a mix breed

Asked by: Poncho
The usual dose of Gabapentin for seizures is 4.5 mg-13.5 mg per pound every 8-12 hours. The usual dose for pain is 1.4 mg per pound once a day. Your veterinarian will determine the appropriate dose for your pet's condition. You may need to use a lower strength capsule or tablet.
Answered by: Lisa M
Date published: 2016-11-25

Can I get Gabapentin compounded liquid chicken flavored?

Asked by: Karen
We do not compound this medication, however you may contact your local compounding pharmacy to see if they can make this for your pet. They should be able to add the flavoring of your choice.
Answered by: S Duesler PharmD MBA
Date published: 2016-11-17

Does the Gabepentin come in 600 mg tablets?

Our son, Harley tore his ACL in the left leg last year, and, the one on the right this year. His doctor has him on 600mg Gabepentin , along with Carprofen, 75mg. We are looking for a cheaper way of providing for his meds. If you can't provide this dosage, could you please refer us to another site as this is going to be a life long regiman for our pet.
Asked by: Anonymous
Sorry, we only carry Gabapentin as 100 mg or 300 mg capsules.
Answered by: Christine
Date published: 2016-10-22
  • y_2017, m_3, d_21, h_14CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_56
  • loc_en_US, sid_prod11172, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_1800petmeds
Get 10% OFF Now Offer
Share Website Feedback