Rx Vitamins LiquiCarn Liquid Heart Supplement for Cats & Dogs, 4-oz bottle

By Rx Vitamins
Rated 4.3333 out of 5 stars
$39.58Chewy Price
$40.00Chewy Price
$37.60Autoship Price
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Frequently Bought Together

Vetoquinol Felovite II Gel Multivitamin for Cats, 2.5-oz tube
Rated 3.5128 out of 5 stars
$13.99Chewy Price
Total Price: $53.57

About This Item


  • Supplemental liquid that helps support cardiovascular, liver, and cognitive health and function in your pet.
  • Formulated for those furry friends with carnitine deficiency.
  • Contains medical-grade l-carnitine, which is an amino acid that plays many roles within the body.
  • Highly-palatable with a liver-bacon flavor for easy administration.
  • Approved by the National Animal Supplement Council Seal (NASC).

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Nutritional Information

Feeding Instructions


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Top IngredientsActive Ingredients: L-Carnitine., Inactive Ingredients: Glycerin, Distilled Water...Hawthorn Berry, L-Carnitine, L- Taurine...Active Ingredients: Coenzyme Q10 (Ubiquinone- 100% pharmaceutical grade)., Other Ingredients: Rice Bran Oil, Gelatin...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 CareHeart CareVitamins & MineralsHeart CareHeart Care
LifestageAdultAdultAdultPuppy, Kitten, Adult, SeniorPuppy, Kitten, Adult, Senior
Food FlavorLiverUnflavoredUnflavoredUnflavored
Food FormSupplementSupplementSupplementSupplementSupplement

Questions & Answers

5 Customer Questions

I don’t understand the recommended dosing...how much am I supposed to give my 10 lb dog?
Answer by ChewyFeb 11, 2021
Dogs of all sizes are to take 50mg twice a day.

Do you need a prescription from a vet for this?
Answer by ChewyNov 25, 2019
This supplement does not require a prescription.

Does the carnitine used in this supplement come from Lonza? How much tartrate is in each dose?
Answer by ChewyNov 23, 2019
The carnitine in LiquiCarn comes from Switzerland, which produces some of the purest, medical grade carnitine in the world. This supplement doesn't contain tartrate within the ingredients.

The dosage says 50mg to 100mg per day, but the dropper says .5ml to 1ml. How do I know how many droppers to give?
Answer by ChewyMar 23, 2021
50 milligrams equals 0.05 milliliters and 100 milligrams equals 0.1 milliliters. It is recommended to give dog's 50 milligrams per kilograms daily and cat's 250 milligrams daily.

ReviewsWrite a Review

Rated 4.3333 out of 5 stars
3 Ratings
Would recommend to a friend

3 Customer Reviews

Rated 5 out of 5 stars
By ErikaL on Dec 29, 2021

Nutritionist recommended

My dog has had crazy gut issues since having a surgery 1.5 years ago. Nobody can figure out why his appetite has been so hot and cold. I started this a week ago; I can't say for certain this is the only thing that has made a difference because we are trying A LOT but I can say, my dogs appetite has been so much better.

Rated 5 out of 5 stars
By Danny on Sep 10, 2021


My French Bulldog had gut issues. The LiquiCarn was one of the steps the Animal Nutritionisit had me adjust to his diet. This along w/ his Satiety food & omega 3 solved his issues, its been 4 years now.

Rated 3 out of 5 stars
By Gemcat4 on Nov 14, 2020

On the fence

My biggest complaint is the dropper is measured in ML and the directions have the recommended dose in mg. My cat is not experiencing the recovery others have noted. It seems to make him a little nauseous (which is a side affect of l-carnitine) and his poop a bit loose