Ondansetron Tablets
Product Information
Please select the correct strength, size & quantity that match with your prescription.
Product name: Ondansetron Tablets
Available strength: 4mg
Product size: 10 Tablets
Active ingredients: Ondansetron
Manufacturer: Apotex
Prescription medicine: This is a prescription medicine, we require that you upload a copy of the veterinary prescription to us at checkout and post us the original copy. Please ensure you have read the how to order prescription medicine page.
Product images: Australian legislation prohibits the advertisement of prescription drugs to consumers, therefore we are unable to display any images of the packaging or provide you with more information regarding this prescription medicine.
Our prescription medicines: All prescription medicines on the Vets Love Pets website are purchased through veterinary wholesalers and manufacturers, the same wholesalers and manufacturers that supply your local vet. All of our products are APVMA or TGA approved and identical to those used by your veterinarian. Please email us if you have any queries about any of the products on our website.
Overview
Ondansetron Tablets are a prescription medication by Apotex that veterinarians may use to help manage nausea and vomiting in dogs and cats. Ondansetron is commonly prescribed to support gastrointestinal comfort in pets experiencing vomiting related to illness, medication side effects or post-operative recovery. Ondansetron is registered for human use, but veterinarians may prescribe it off-label for animals when they determine it is clinically appropriate. Your veterinarian will assess whether ondansetron tablets are suitable for your pet and how they should be used as part of a broader treatment plan.
How Ondansetron Works
Ondansetron works by blocking serotonin receptors involved in triggering nausea and vomiting. By reducing these signals, ondansetron may help control vomiting and improve comfort in dogs and cats under veterinary supervision. Your veterinarian will determine how ondansetron fits into your pet’s overall care, particularly when gastrointestinal upset is present.
When Vets May Prescribe Ondansetron
Veterinarians may prescribe ondansetron tablets to help manage:
- Acute or ongoing vomiting
- Nausea related to gastrointestinal disease
- Vomiting associated with medication side effects
- Post-operative nausea
- Supportive care during illness or recovery
Ondansetron helps control symptoms but does not treat the underlying cause of vomiting.
Dosage Guidance
Ondansetron tablets are commonly supplied in a 4 mg strength, with each pack containing 10 tablets. Your veterinarian will determine:
- the appropriate dose based on your pet’s species, weight and condition
- how often ondansetron should be given
- how long treatment should continue
- whether ondansetron should be used alone or alongside other supportive medications
Do not adjust the dose or stop treatment unless advised by your veterinarian.
Safety Information & Side Effects
- Not suitable for pets with known sensitivity to ondansetron.
- Tell your veterinarian about any other medications or supplements your pet is taking.
- Possible ondansetron side effects in dogs and cats include constipation, mild sedation or gastrointestinal changes.
- Monitoring may be recommended if ondansetron is used repeatedly or alongside other medications.
- Contact your veterinarian if vomiting persists, worsens or if new symptoms appear.
Disclaimer: This information is general and should not replace veterinary advice from your veterinarian.
Shipping
Non-Prescription Products:
• Free shipping on metro orders over $49+.
• Shipping fee for regional orders & metro orders under $49 will be calculated at checkout.
Prescription Medications:
Shipped separately via express shipping at a flat rate of $8.95.
Returns
Non-Prescription Products:
We offer a hassle-free return policy within 30 days for unopened items in original condition for exchange or store credit. Refunds are available if the product is faulty or not as described; however, food or treats cannot be returned once opened.
Prescription Medications:
We cannot accept change of mind returns for prescription products, given that there are laws that prohibit the resale of medication. Please make your selections carefully, and double-check your order before submitting.
Palatability Guarantee
Our Palatability Guarantee applies to selected brands, including Advance, Royal Canin, Purina, Hill's and 4CYTE, allowing you to return any unused portion of dry/wet food for an exchange or full refund.
Frequently Asked Questions
Ondansetron is used to help manage nausea and vomiting in dogs and cats. It works by blocking signals in the brain that trigger vomiting, helping improve comfort during illness or recovery.
Ondansetron may begin reducing nausea and vomiting within a few hours, although response times vary depending on the underlying cause. Your veterinarian can explain what to expect for your pet.
The effects of ondansetron may last several hours, but the duration varies between pets and treatment plans. Your veterinarian will advise how often it should be given based on your pet’s needs.
Possible ondansetron side effects include constipation in dogs and constipation in cats, mild sedation or gastrointestinal changes. Not all pets experience side effects, but contact your veterinarian if symptoms persist or worsen.
Yes, constipation can occur in some dogs or cats taking ondansetron, although it is not experienced by all pets. Your veterinarian can advise if this becomes a concern.
Ondansetron dosage varies depending on species, weight and the reason it is prescribed. Your veterinarian will determine the correct dose and schedule for your pet.
Ondansetron should only be given to dogs as directed by a veterinarian. Your vet will advise how the tablet should be administered and whether it should be given with or without food.






























