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  • HEARTGARD® (ivermectin) for Cats is used to prevent heartworm infections.

HEARTGARD® (ivermectin) Chewable for Cats


*Prescription Required: Vetsource®, our pharmacy provider, may need to contact your veterinary hospital for prescription verification.

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Your Price $13.49-$51.18
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Product Information

HEARTGARD® (ivermectin) for Cats are a once a month chewable that can protect your cat from the threat of potentially deadly heartworm disease. In a tasty flavor that cats love, HEARTGARD® (ivermectin) for Cats is safe for all sizes and breeds of cats. Each chewable contains ivermectin.

VetSource pharmacy has a direct relationship with and is authorized to dispense Merial products.

Active Ingredients


Side Effects

There are very few side effects when the drug is given at the usual dose. Ivermectin may rarely cause a shock like reaction in dogs. If this occurs, notify your veterinarian. If you notice anything unusual, contact your veterinarian.

Developed For

Cats (at least 6 weeks of age)

Product Benefits

HEARTGARD® (ivermectin) for Cats is used to prevent heartworm infections.

Usage Guidelines

HEARTGARD® (ivermectin) for Cats should be given orally as directed by your veterinarian.


There are no known drug interactions with ivermectin. It is best to always tell your veterinarian what other medications you are giving to your pet. Quite often your veterinarian may prescribe two different medications, and a drug interaction may be anticipated. In this case, your veterinarian may vary the dose and/or monitor your pet more closely. Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together.

Allergic reactions to medications may occur. Be sure to inform VetSource and your veterinarian if your pet has any known drug sensitivities or allergies. If your pet displays symptoms of an allergic reaction, call your veterinarian immediately or go to a veterinary emergency clinic. Symptoms may include but are not limited to: swollen lips, tongue, face, airways; difficulty breathing; agitation; profuse salivation; vomiting; widespread hives and itching.