Best dietary supplements 2026

Our rankings use the Avo data quality score, which combines three factors:

1. Ingredient quality — we analyze every ingredient in the product and flag concerning additives, artificial colors, and preservatives with known health risks.
2. Certifications — USDA Organic and Non-GMO Project Verified certifications indicate higher production standards.
3. Nutritional profile — we consider macronutrient balance, fiber content, added sugar, and sodium relative to the category.

Higher-ranked products have cleaner ingredient lists, meaningful certifications, and better nutritional profiles for their category.