I import supplements from US brands like Research Nutritionals and Tru Niagen. How do I use this to source ingredients for my own Indian brand?

Go directly to the ingredient manufacturer's website. Most manufacturers publish their full portfolio of studied ingredients and the clinical evidence behind each, and any brand using those ingredients can cite that evidence in its marketing. This is exactly how to source credible ingredients for an Indian brand.

• A large share of branded US supplement raw materials are originally sourced from India or China before being studied and trademarked abroad.
• Indian founders have a proximity advantage, with the right contacts, equivalent raw materials can often be accessed closer to source at lower cost.
• Gin-4, a clinically studied ginger extract, is one example where any brand using it can make evidence-based marketing claims.