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Quick Links: > Home > For Cats > Heartworm Prevention > Heartgard for Cats
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Heartgard for Cats
How To Order Prescriptions
General Information:
Generic Name:
Brand Name:
Heartgard Chewables for Cats by Merial
HEARTGARD Chewables for Cats are a once-a-month heartworm preventative and dewormer used in cats and kittens.

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Heartgard for Cats Is Used To Treat These Symptoms:
• Heartworms
• Hookworms
Possible Side Effects With Heartgard for Cats:
• Vomiting
• Diarrhea
• Nausea
Very few adverse side effects have been reported with HEARTGARD Chewables for Cats, however it is possible.  If your pet experiences any of these symptoms, stop treatment and contact your veterinarian.

- Use as directed by your veterinarian
- Follow the instructions on the prescription label
- Store HEARTGARD for Cats at room temperature
- Do not use in kittens less than 6 weeks old
- Should be given once-a-month year-round
- Dosage is based on your cat's weight
- For cats weighing over 15 pounds, use a combination of 2 HEARTGARD tablets

Dosage for CATS
Cats and kittens weighing up to 5 pounds
Box color: RED
- 55 mcg / tablet
- Give 1 tablet  by mouth once a month
Cats and kittens weighing 5 - 15 pounds
Box color: PURPLE
- 165 mcg / tablet
- Give 1 tablet by mouth once a month

Dosage FAQs
- In the case of a missed dose of HEARTGARD for Cats, give is as soon as you remember.  DO NOT GIVE A DOUBLE DOSE OF HEARTGARD CHEWABLES FOR CATS.

Active Ingredient
Ivermectin (0-5 lbs)
55 mcg
Ivermectin (5-15 lbs)
165 mcg
The product information provided is for educational purposes only. Our product information is not intended to replace the advice of your veterinarian. Do not use our product information for diagnostic purposes. Always take your pet to your veterinarian to obtain a diagnosis and course of treatment. Our product information may not cover all aspects of the drug or product you're viewing. Only your veterinarian is qualified to assess all possible side effects, interactions, precautions, warnings and possible allergic reactions relating to the use of this product or drug with your pet. Our product information is not meant to be a substitute for a veterinary exam. All trademarks are the property of their respective companies.
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