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Does Heartgard for cats require a prescription?

Author

Mia Morrison

Updated on March 31, 2026

Does Heartgard for cats require a prescription?

Heartgard Chewables for Cats are a flavored treatment for cats given once a month to prevent heartworms, and for the removal and control of adult and immature hookworms. Heartgard Chewables for Cats require a prescription from your veterinarian.

Can you give too much Heartgard?

At elevated doses, sensitive dogs showed adverse reactions which included mydriasis, depression, ataxia, tremors, drooling, paresis, recumbency, excitability, stupor, coma and death. HEARTGARD demonstrated no signs of toxicity at 10 times the recommended dose (60 mcg/kg) in sensitive Collies.

Is there a heartworm pill for cats?

Unfortunately, there is no approved drug therapy for heartworm infection in cats, and the drug used to treat infections in dogs is not safe for cats.

Is there Heartgard Plus for cats?

Give your cat a healthy heart with Heartgard Plus for Cats. Heartgard Plus for Cats is a tasty chewable treatment that helps prevent heartworms effectively. It also controls and removes hookworms. This chewable preventive treatment must be prescribed by a veterinarian prior to administering it to your cat.

Is there an over the counter heartworm prevention?

“In the United States, purchasing heartworm preventive requires a prescription, according to the AHS (American Heartworm Society), which owners use to buy medication from their veterinarian or through a U.S. pharmacy.

Can Heartgard cause liver damage?

Ever since Filaribits Plus (back in the seventies and eighties) was found to cause devastating liver damage to some dogs and then Ivermectin (the active ingredient in Heartgard) was determined to be hazardous to the health of select breeds (collies and Aussies) a movement of anti-heartworm proponents has been slowly …

Can you buy over the counter heartworm medicine for cats?

There are currently no natural or over-the-counter heartworm preventatives that have been proven to be safe and effective, so you can forget about an herbal solution or essential oil that can prevent heartworms from infecting your cat.

What percentage of cats get heartworm?

Although dogs are the more natural host for this disease, cats are also susceptible to heartworm infection. It is estimated by the American Heartworm Society that, in any given community, the incidence of heartworm infection in cats is approximately 5% to 15% percent that of dogs who are not on preventive medication.

What is the best heartworm medicine for cats?

Trifexis is one of the leading oral combination heartworm preventatives. It is a once a month chewable tablet that prevents heartworms, kills adult fleas and also prevents hookworms, roundworms and whipworms.