Before you buy your pet’s medicine at the vet’s office, ask for a written prescription and price it at a regular pharmacy with a free coupon. Many pet prescriptions are the same generics people take, and a coupon can cut the pharmacy’s price to a fraction of retail.
Amoxicillin, gabapentin, fluoxetine, and prednisone are common examples, and the clinic often isn’t the cheapest place to buy them. Denver veterinarian Margot Vahrenwald tells owners her clinic can’t match a drugstore chain’s buying volume, and she has estimated that 30 percent or more of her clients fill written prescriptions elsewhere to save money.
Asking for the prescription is routine, and your vet should say yes. The American Veterinary Medical Association’s ethics code requires vets to provide a prescription on request, instead of dispensing the drug, once they’ve decided a pet in their care needs it. Many states require it by law.
Compare three prices for the same drug, strength, and quantity: the clinic’s, a nearby pharmacy’s with a GoodRx coupon, and an online pet pharmacy’s. On October 2, 2026, in Columbus, Ohio, GoodRx’s free coupon cut the price of 60 capsules of 100 mg gabapentin from $41 to $11.03 at Meijer and from $27 to $15.31 at Kroger. That’s a month’s supply for a dog taking two a day. Chewy listed the same 60 at $4.80 before shipping. It won on price, but it contacts your vet first, and delivery usually takes three to five days. A drugstore is faster when the pills can’t wait.
GoodRx says most of its coupons work on a human drug your vet prescribes for a pet, but not on compounded drugs or pet-only medications such as heartworm preventives and flea and tick treatments. Expect the pharmacist to ask for the vet’s DEA number and the pet’s date of birth.
Tell the pharmacist the prescription is for a pet, and ask them to check any liquid or chewable version for xylitol. The FDA warns the sweetener can cause a dangerous drop in a dog’s blood sugar within an hour. The liquid form of Neurontin, the brand-name gabapentin, lists it as an ingredient.
Start with the medicine your pet takes every day. Its price gap repeats with every refill.
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