$1.67 billion in 2026 sales are projected to grow to $4.17 billion by 2036, with demand tied to pet digestive wellness, veterinarian recommendations and repeat owner purchases.
Powder leads the form segment at 42.5% of the 2026 market, or $708.0 million, while probiotics hold 38.8% of product type at $646.4 million.
Dogs account for 32% of pet-type demand at $533.1 million in 2026, and veterinary clinics represent 27.5% of distribution at $458.2 million.
North America holds 27.6% of regional demand in 2026 at $459.8 million, while India posts the fastest country CAGR at 11.85%, ahead of China's 10.85%.
The report says suppliers will compete on palatability, technical proof, manufacturing consistency and veterinary credibility, with proof burden and rollout risk still slowing adoption.