Oral Antiemetic Tablets for Nausea and Vomiting Relief in Pets Product Description Ondansetron 8mg Tablets are a prescription 5HT3 serotonin receptor antagonist used by veterinarians to prevent and treat nausea and severe vomiting in dogs and cats at home. Given by mouth, the tablet works by sitting on serotonin receptors in the gastrointestinal tract and the brain's chemoreceptor trigger zone, cutting off the vomiting reflex at its source. It is prescribed for chemotherapy-induced nausea, vestibular disease, pancreatitis, parvovirus, medication side effects, and post-surgical recovery, and is used off-label in veterinary medicine. Benefits Home Vomiting Management: Gives pet owners a way to manage chemotherapy-related or illness-related vomiting at home under veterinary guidance. Fast-Acting Nausea Relief: Starts working within 15 to 30 minutes of being given by mouth, offering quick relief for pets dealing with acute nausea. Vestibular Disease Support: A randomized clinical study backed its effectiveness for managing nausea and vomiting tied to vestibular disease in dogs. Dehydration Prevention: Keeping vomiting under control lowers the risk of dehydration and electrolyte imbalance in pets dealing with acute or ongoing illness. Diarrhea Relief in Dogs: By slowing intestinal contractions, ondansetron also helps ease diarrhea in dogs going through nausea and loose stools at the same time. Ingredients Active Ingredients Ondansetron Hydrochloride How to Use Ondansetron 8mg Tablets are a prescription-only medication. A valid veterinarian prescription is required to purchase this product. Please follow your veterinarian's specific instructions for the dosage and administration of this medication for your pet. Disclaimer: Dosage and administration of this medication must be determined by a licensed veterinarian. Always consult your veterinarian before administering or adjusting any prescription medication for your pet. Tucking this tablet into a soft pill pocket or pill wrap treat makes giving it at home much simpler for both you and your pet. Keep hands dry before handling, since some ondansetron tablets are orally disintegrating and break down quickly when they come into contact with any moisture. This medication can be given with or without food. Shop Pill Pockets for Dogs | Shop Pill Pockets for Cats Additional Information Precautions Known Allergy Contraindication: Pets with a known sensitivity or allergy to ondansetron or other 5HT3 receptor antagonist medications should not receive this medication. Caution in Liver Disease: Reduced liver function slows how ondansetron is broken down, which can allow the drug to build up and raise the risk of side effects. Caution in Collie Breeds: Collies and related MDR1-affected breeds need extra care, as the genetic mutation can significantly change how the drug is handled in the body. Caution in Cardiac Conditions: Pets with known arrhythmias or those on medications that affect heart rhythm need careful management when starting this medication. Caution in Pregnancy: How this medication affects pregnant or nursing animals is not fully established, so it should only be used after a veterinarian reviews the situation. Drug Interaction Risk: Share a full list of your pet's current medications, particularly any other serotonergic drugs, with your veterinarian before starting ondansetron. Possible Side Effects Constipation: Slowed intestinal movement is something some pets experience on this medication and is worth monitoring throughout treatment. Sedation and Sleepiness: Mild drowsiness and lower energy have come up in some dogs and cats on ondansetron and are worth keeping an eye on. Head Shaking: Involuntary head movements, also called extrapyramidal signs, are an uncommon but noted side effect of ondansetron seen in some pets. Serious Allergic Reactions: Trouble breathing, swelling, or unusual behavioral shifts point to a serious allergic reaction needing immediate emergency veterinary care. Storage Information Room Temperature: Tablets do best at room temperature inside a tightly closed container, kept away from heat, moisture, and direct sunlight. Keep Hands Dry When Handling: Some formulations break down on contact with moisture, so keeping hands dry before touching the tablet is an important step every time. Out of Reach: Keep this medication somewhere children and untreated animals in the home cannot get to it. NOTE: For generic medications, the product image shown may not reflect the actual item received. Generic medications can vary in size, color, and shape between orders depending on the manufacturer. Additionally, your medication may arrive packaged in a HardyPaw Pharmacy vial. Shipping & Return We offer ground, express, and priority delivery; see our shipping policy for details. For return instructions or product concerns, please refer to our detailed refund policy. Prescription items are NON-RETURNABLE and NON-REFUNDABLE. Frequently Asked Questions Q1: When would a veterinarian choose ondansetron tablets over the injectable form? Ans: Ondansetron tablets work well for ongoing nausea management at home, such as during chemotherapy cycles or long-term illness, when the pet can reliably swallow a tablet. The injectable form tends to be the better fit in a clinical setting when vomiting is severe or the pet cannot safely take anything by mouth. Q2: How does ondansetron compare to maropitant for treating vomiting in pets? Ans: Where maropitant works through NK1 receptor blockade and holds FDA approval for veterinary use, ondansetron goes after 5HT3 serotonin receptors and tends to perform better for chemotherapy-induced or vestibular-related nausea specifically. The choice between the two really comes down to what is driving the vomiting in the first place. Q3: Can ondansetron help dogs and cats with vomiting caused by vestibular disease? Ans: A randomized double-blinded clinical study found it effective for nausea linked to vestibular disease in dogs. The condition brings on sudden dizziness, disorientation, and nausea that can be hard on pets. Ondansetron's ability to block serotonin-driven nausea signals makes it a clinically backed option for this type of presentation. Q4: Why should Collie breed dogs be given ondansetron with extra caution? Ans: Dogs with the MDR1 gene mutation, common in Collies and related breeds, have reduced drug transporter activity that changes how medications like ondansetron move through and out of the body. This can push drug levels higher and increase side effect risk. A veterinarian will look at adjusting the dose or picking a different option if a dog carries this variant. Q5: Can ondansetron tablets be given before chemotherapy to prevent vomiting in pets? Ans: Pre-treating with ondansetron before chemotherapy is about getting ahead of nausea rather than reacting to it once it hits. Pets that are not fighting nausea during treatment sessions tend to stay better hydrated and are less likely to need a break from their chemotherapy schedule. Timing and dosing will be worked out with a veterinarian based on the protocol in use. Clinical Research https://medlineplus.gov/druginfo/meds/a601209.html https://www.healthline.com/health/drugs/ondansetron-orally-disintegrating-solid
