Ondansetron (Generic) Tablets, 8-mg, 30 tablets

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Medications ship separately. Delivery times may vary.

About This Item

Details

Ondansetron is an antiemetic drug used to treat or prevent severe vomiting in dogs and cats. While the FDA has approved it only for use in humans, veterinarians may prescribe it in certain situations. It is usually well tolerated by pets and this uncoated tablet can be given with or without food. Ask your veterinarian if ondansetron is right treatment for your pet.We directly source prescription medications from manufacturers and wholesale distributors registered with the FDA and licensed by applicable state boards. Guaranteed genuine, and where applicable, backed by the manufacturer.

Ingredients

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FAQ

Learn More About Ondansetron From Our Team of Experts
4.7
Rated 4.7 out of 5 stars
413 Ratings

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Ease of Use

88% Positive

Effectiveness

92% Positive

Ingredients

91% Positive

Long-Term Benefits

97% Positive

148 Customer Reviews



Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 5 out of 5 stars
By Jeannie on Jan 2, 2026

Helps Max

This product has been very effective in helping Max's digestive system. Chewy's easy subscription delivery helps us never to run out. Chewy rocks!

This product has been very effective in helping Max's digestive system. Chewy's easy subscription delivery helps us never to run out. Chewy rocks!


Rated 5 out of 5 stars
By Teri on Dec 12, 2025

This med works very well and it saved me financially!

Maisie has a tender stomach and occasionally she loses her appetite and her stomach rumbles loudly. This med works faster to get her comfortable than the non generic

Maisie has a tender stomach and occasionally she loses her appetite and her stomach rumbles loudly. This med works faster to get her comfortable than the non generic did.


Rated 5 out of 5 stars
By allison on Oct 3, 2025

Best prices, unparalleled customer service

In all honesty, I first tried to use a locally owned pharmacy. They were not only several times more expensive, but their awful customer service is what drove me

In all honesty, I first tried to use a locally owned pharmacy. They were not only several times more expensive, but their awful customer service is what drove me away. Chewy actually called me to make sure I had enough on hand because they were concerned my pup would be short her medicine! And they processed and shipped out same day they received the prescription. So relieved and will always use Chewy for any pharmacy needs.


Rated 5 out of 5 stars
By Loretta on Nov 11, 2025

Small size

These pills are very small making it easier to give to my cat. Unfortunately, my vet just informed me that they will no longer allow me to order anything from Chewy

These pills are very small making it easier to give to my cat. Unfortunately, my vet just informed me that they will no longer allow me to order anything from Chewy and I have to use their more expensive pharmacy.


Rated 5 out of 5 stars
By Dorothy on Oct 5, 2025

Fast shipping

My Reecie is 16 years old and has small intestinal lymphoma. The chemotherapy does make her nauseous and the Ondansetron 4mg with 5mg Pepcid has really helped with

My Reecie is 16 years old and has small intestinal lymphoma. The chemotherapy does make her nauseous and the Ondansetron 4mg with 5mg Pepcid has really helped with the vomiting. We have went from every day to a couple times a week.


Rated 5 out of 5 stars
By Tracey on Sep 30, 2025

Best for nausea!

This is a lifesaver for our chronic pancreatitis cat. Curbs the nausea quick! We also use the injection version that can be given subq that our vet prescribes (they

This is a lifesaver for our chronic pancreatitis cat. Curbs the nausea quick! We also use the injection version that can be given subq that our vet prescribes (they have it here at chewy). Chewy always has the lowest price and gets it too us quick!


Rated 5 out of 5 stars
By Beth on Oct 2, 2025

Great medicine

Great medicine and cheap prices.ths chewy pharmacy is an outstanding and helpful staff. Any questions just ask. Love chewy.1 tablet every 12 hours. One is all

Great medicine and cheap prices.ths chewy pharmacy is an outstanding and helpful staff. Any questions just ask. Love chewy.1 tablet every 12 hours. One is all you need. Cheap prices.


Rated 5 out of 5 stars
By Gloria on Sep 16, 2025

Saved my dog from vomiting!

Had to take my 9 year old Sheltie to the emergency vet due to vomiting constantly. Apparently, this drug is given to human for nausea caused by chemotherapy. It

Had to take my 9 year old Sheltie to the emergency vet due to vomiting constantly. Apparently, this drug is given to human for nausea caused by chemotherapy. It works wonders! Has not thrown up since!


Rated 5 out of 5 stars
By Lauren on Oct 29, 2025

Excellent price, fast service

Chewy is a fantastic resource for us, our girl is older and on multiple meds. Their RX pricing keeps things from spiraling financially.

Chewy is a fantastic resource for us, our girl is older and on multiple meds. Their RX pricing keeps things from spiraling financially.


Rated 5 out of 5 stars
By Laurie on Jan 7, 2026

Great service! Great price

I always get my pups meds quickly. Chewy handles everything

I always get my pups meds quickly. Chewy handles everything