Proprietary Blends vs Full Disclosure: An Ingredient Transparency Investigation Across 20 Brands
By The dogsupplementreport.com Investigations Team · Updated July 2026 By The DSR Investigations Desk | Published July 30, 2026 | Updated July 30, 2026 | 15 min read Dog owner holding a supplement bottle and reading the ingredient label Editorial & Funding Disclosure: Dog Supplement Report is an independent, reader-supported publication. No manufacturer paid for…