Inside the Proprietary Blend Loophole: What Dog Supplement Labels Are Hiding
By The dogsupplementreport.com Investigations Team · Updated July 2026 By Sarah Jennings, Regulatory Correspondent | Published July 30, 2026 | 15 min read Close-up of a Supplement Facts label on a product bottle Editorial & Funding Disclosure: Dog Supplement Report is an independent, reader-supported publication. No brand mentioned here paid for placement, and affiliate relationships…