564+
Products Scored
211+
Brands Analyzed
702+
Ingredients Tracked
4
Marketplaces Covered
Browse by Category
Explore rankings across all major pet supplement categories, each with detailed PSI+ scoring.
#1Native Pet
Native Pet Senior Daily Powder 12-in-1 Supplement for Senior Dogs
$19.49Senior Pet
#2VetIQ
VetIQ Hip & Joint Soft Chew Joint Supplement for Dogs
$18.97Joint & Hip
#3Vibeful
Vibeful Calming Hemp Chicken Flavored Soft Chews Calming Supplement for Dogs
$19.99Calming & Anxiety
#4The Missing Link
The Missing Link Ultimate Canine Senior Health Formula Dog Supplement
$32.99Senior Pet
#5ThorneVet
Heart Health Formula (formerly Bio-Cardio)
$59.00Heart Health
#6VetriScience
VetriScience Canine Plus Senior 27+ Active Health Veggie Flavored Soft Chews Multivitamin for Senior Dogs
$12.79Senior Pet
How PSI+ Scoring Works
Our proprietary scoring system evaluates every pet supplement across four science-backed dimensions.
Ingredient Adequacy
Are key ingredients at clinically effective doses for pets based on veterinary research?
Weight: 35%Formula Completeness
Does the product include all expected ingredients for its supplement category?
Weight: 25%Label Transparency
Are individual ingredient amounts clearly disclosed without proprietary blends?
Weight: 20%Ingredient Diversity
Does the formula include a breadth of beneficial compounds from multiple pathways?
Weight: 20%