PetSupplementsIndexScience-Backed Rankings

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SmartPak

Avg PSI+ Score: 43.0

Products: 6

Products by SmartPak

SmartFlex Senior Pellets

pelletFor horses

SmartDigest Ultra Pellets

pelletFor horses

SmartPak SmartImmune Pellets

pelletFor horses

SmartHoof Pellets

pelletFor horses

SmartEquine SmartSupplements SmartCalm Ultra Pellet Horse Calming Supplement, 7.5-lb bag

pelletFor horses

SmartPak SmartCalm Ultra Pellets

PetSupplementsIndex.com — Science-Backed Pet Supplement Rankings

PetSupplementsIndex.com provides independent, science-backed rankings for over 600 pet supplements across 8 categories: Joint & Hip, Digestive Health, Skin & Coat, Multivitamin, Calming & Anxiety, Heart Health, Immune Support, and Senior Pet.

Every product is scored using our proprietary PSI+ system that evaluates ingredient adequacy, dose transparency, third-party testing, NASC certification, and real customer feedback.