US
Heart

Heart Support Granules for Dogs

  • Antioxidant
  • Dog
  • 14.3 ounces
  • CARD123
4.0/ 5 on Amazon54Amazon ratings100+bought last month3.5ProductDome score
Medium confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology
Best forYou want a daily granule supplement adding taurine, carnitine and CoQ10 to an at-risk or aging dog's diet

A granule heart-support supplement built around taurine, carnitine, CoQ10 and omega-3s, best used alongside veterinary guidance rather than in place of it.

View current price on Amazon →

As an Amazon Associate, ProductDome may earn a commission from qualifying purchases made through links on this page.

ProductDome scorecard

How it ranks among the 28 antioxidants we track

3.5/ 5ProductDome scoreMedium confidence
Owner satisfaction · 56% of scorecategory median 4.4★4.1

4.0★ across 54 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 159 ratings2.2

54 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score2.7

100+ bought on Amazon last month.

Data quality · 11% of score2.5

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 28 antioxidants we track - how the scorecard works · full antioxidants data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

CARDIOMAX Heart Support Granules are a daily granule supplement for dogs, combining L-taurine, L-carnitine, CoQ10 and omega-3 EPA and DHA in a 90-dose, USA-made formula aimed at cardiovascular and heart muscle support.

The ingredient list leans on compounds commonly associated with heart and circulatory function rather than a single active. It is positioned for at-risk breeds and aging dogs, and comes as loose granules meant to be mixed into food rather than given as a chew or capsule.

  • 90 doses of granules in a 405 gram tub
  • Active ingredients include taurine, carnitine and CoQ10
  • Formulated for all dog life stages
  • Aimed at at-risk and aging breeds

Who it's for

Owners of older dogs or breeds prone to cardiovascular issues who want a daily granule add-in alongside vet care. Not a substitute for prescribed heart medication or veterinary diagnosis, since it is sold as a supplement rather than a drug.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out
  • Combines taurine, carnitine, CoQ10 and omega-3s in one product
  • Granule form mixes easily into daily food
  • USA-made, 90-dose supply
What to check first
  • 4.0 average rating is lower than most supplements in this batch
  • A supplement, not a substitute for veterinary heart treatment

Performance notes

Each dose combines L-taurine and L-carnitine, both linked to heart muscle function, with CoQ10, omega-3 EPA and DHA, and dimethylglycine (DMG). The 405 gram tub is portioned for 90 doses, meant to be mixed into food daily rather than given as a treat.

Specifications

BrandHeart
Dimensions & fit
Dog Breed SizeAll
Included components
Unit Count14.3 ounces
Included Components90 Doses Granules
Other details
Pet TypeDog
Manufacturer Part NumberCARD123
Upc814087009630
Customer Reviews{'ratings_count': '54', 'stars': '4.0'}
Specific Uses For ProductCardiovascular Health Maintenance, Circulatory Strength, Heart Muscle Function, Support for Aging Dogs.
AsinB0CXLV9H94
Target SpeciesDog
Best Sellers Rank#45,980 in Pet Supplies (See Top 100 in Pet Supplies) #31 in Dog Antioxidant Supplements
Active IngredientsL-Taurine, Coenzyme Q10, L-carnitine, Omega-3 EPA & DHA, Dimethylglycine (DMG)
ManufacturerPet Health Solutions - Cardiomax - HealthyPets Inc
Item FormGranule
Model NumberCARD
Product BenefitsBoosts energy, stamina, and cellular health while supporting long-term heart wellness., Granules for easy daily heart and circulatory support for dogs of all life stages., L-Taurine, L-Carnitine, EPA, DHA & CoQ10 support heart muscle and healthy circulation., Maintains healthy heart muscles and cardiovascular function, ideal for at-risk breeds., Promotes optimal heart rhythm, circulation, and oxygen flow for vitality and stamina., Supports strong heart function and cardiovascular health, keeping dogs active and energetic.

How it compares

This product against the closest alternatives we track in antioxidants.

ProductAmazon ratingRatingsProductDome score
Heart Support Granules for DogsThis product4.0 / 5543.5 / 5
Amazing Turmeric for Dogs Curcumin Pet AntioxidantAmazing4.4 / 58,0004.4 / 5
Life Extension L-GlutamineLife4.6 / 52,0004.3 / 5
Virbac REBOUND® Recuperation Formula for DogsVirbac4.5 / 52,2004.3 / 5
NaturVet Aller-911 Advanced Allergy Aid for DogsNaturVet4.4 / 53,7004.2 / 5
Frequently asked

Questions about the Heart antioxidants

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

What are the active ingredients in CARDIOMAX Heart Support Granules?

L-taurine, L-carnitine, CoQ10, omega-3 EPA and DHA, and dimethylglycine (DMG).

How many doses are in one tub of CARDIOMAX granules?

The 405 gram tub is portioned for 90 doses.

Is CARDIOMAX meant to replace prescribed heart medication?

No, it is sold as a daily supplement and is not a substitute for veterinary-prescribed treatment.