Rx Vitamins Formula CV Capsules Heart Supplement for Cats & Dogs, 90 count

By Rx Vitamins
Rated 4.2857 out of 5 stars
$33.77Chewy Price
$40.00Chewy Price
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About This Item


  • Supplemental capsules that help maintain your furry friend’s cardiovascular system.
  • Contains potassium and magnesium, which play important roles in the contraction and relaxation of the heart muscle.
  • Protects the integrity of blood vessels with selenium and provides vital antioxidant protection.
  • Features hawthorn berry and other essential nutrients for cardioprotective qualities.
  • Approved by the National Animal Supplement Council Seal (NASC).

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Nutritional Information

Feeding Instructions


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Top IngredientsHawthorn Berry, L-Carnitine, L- Taurine...Active Ingredients: Coenzyme Q10 (Ubiquinone- 100% pharmaceutical grade)., Other Ingredients: Rice Bran Oil, Gelatin...Active Ingredients: L-Carnitine., Inactive Ingredients: Glycerin, Distilled Water...Active Ingredients: L-Carnitine HCl, L-Taurine, N...Active Ingredients: Certified Organic Hawthorn Berries 1:4, Gingko Biloba 1:4, Garlic 1:4....
Breed SizeExtra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...
Health FeatureHeart CareVitamins & MineralsHeart CareHeart CareHeart Care
LifestageAdultAdultAdultPuppy, Kitten, Adult, SeniorPuppy, Kitten, Adult, Senior
Food FlavorUnflavoredUnflavoredLiverUnflavored
Food FormSupplementSupplementSupplementSupplementSupplement

Questions & Answers

3 Customer Questions

Can you open the capsule of the CV support and sprinkle in the dog kibble?
Answer by ChewyJan 09, 2020
These capsules can be swallowed whole, or opened up and sprinkled over your pet's food. They are small enough to fit into a pill pocket, as well.

My dog is on a variety of heart medications. Would this be safe to use along with?
Answer by ChewyAug 20, 2019
Due to your pet's diagnosed condition, we recommend consulting your Veterinarian to see what would be a good fit for your pet's current treatment plan.

Does the RX Vitamin Line need a prescription ?
Answer by ChewyAug 14, 2019
This supplement doesn't require a prescription for purchase.

ReviewsWrite a Review

Rated 4.2857 out of 5 stars
7 Ratings
Would recommend to a friend

7 Customer Reviews

Rated 4 out of 5 stars
By Duck on Apr 30, 2022

Neat concept but not ideal

I bought several of these toys that dispense treats for my dogs. This specific duck is cool, but not quite sure how he’s supposed to get the treats out without completely ruining the rubber/hole area. He loves it, ever since we’ve gotten the toy my pup hasn’t left it alone.

Rated 5 out of 5 stars
By Megan on Mar 19, 2022

Working well for my cat so far

I bought this because my vet recommends this brand, and my new shelter cat has cardiac issues. As others have noted, it's a bit challenging to dose a cat, so here's what I do. Charles is supposed to get half a capsule a day. So I break up a capsule each morning and sprinkle over the dry food my 3 cats eat. He's still chunky and eats a lot, so it's not exactly a half a capsule, but it's the best I can do. Then I add a packet of Purina FortiFlora to the dry food as well, and mix it all up. The flavor from the FortiFlora makes it super tasty and they all eat it well.

Rated 5 out of 5 stars
By Hlop on Oct 10, 2021

Love this, it works

My chihuahua had heart murmur he always sounded congested snore loud and gurglely, as if he always had a cold. But since taking this those symptoms are gone.

Rated 5 out of 5 stars
By Jill on Jan 31, 2021
Top 500 Contributor

Helpful for a dog with cardiomyopathy

I use a number of supplements as well as prescribed heart medications for our dog with cardiomyopathy (of a valvular nature). It's always a bit of a challenge to tell what exactly does what, but my sense is that this product is helping. I've also started using a pinch of it for my 17 year old cat who sometimes shows signs of heart issues. Since our dog is little and does not swallow pills well, I open the capsules and put the powder into a mix for him of supplements, including the canine heart support by Standard Process. I think he likes the taste of that. Always a bit of a guess, but I don't think that he minds the taste of the formula cv mixed in with liquid.

Rated 5 out of 5 stars
By Tawny on Oct 8, 2020

Vet Prescribed

I prefer homeopathic or natural remedies when possible. My vet had me start with this medication for my dog’s heart murmur. Unfortunately, his heart murmur got worse; so my vet added a prescription heart murmur medication, but still recommended my dog keep taking this herbal capsule as well. His heart murmur has improved. He’s 62 lbs. & gets 1 herbal capsule twice daily.

Rated 1 out of 5 stars
By Charlotte on Dec 17, 2019

wrong pill size for cats

My cat has a heart murmur, so my vet recommended this stuff to me to help keep his heart healthy. These are large capsules filled with powder, and the instructions say to give my cat half a capsule daily. How am I supposed to half a capsule?? I read online that some people sprinkle it over wet food, but my vet told us to stop feeding him any wet food because of how bad it is for their teeth. Plus when I tried a similar method in the past both of my cats just ate around the powder. If it is a supplement for both dogs and cats, then it should come in a size for cats as well! We are now undertaking the tedious process of moving the powder from the capsules it came in, into smaller empty capsules that we bought online. Very frustrating. Makes an already difficult process even more difficult.

Rated 5 out of 5 stars
By Teddy on Aug 1, 2019

Vet Recommended

My 17 year old cat has congestive heart failure. We added this product to his current medications (Vetmeden and Fluerosmide) several weeks ago and he has improved. I highly recommend. I have been able to reduce his daily Fluersomide dose. This product provides necessary amino acids and hawthorn berry. Conventional medications only control the problem, I like that the Hawthorn berry and amino acids in this product may help provide some healing rather than just controlling the problem.I recommend using this product in addition to persciption medications. Our vet suggested 1/2 capsule twice daily due to the severity of his condition.