Medical Grade Vitamins and Nutritional Supplements by MetagenicsThe right vitamins and supplements can make all the difference in helping you achieve your optimal health and weightloss goals. Experience The Metagenics Difference. Metagenics backs their products with robust scientific evidence and clinical studies, and are committed to transparent, clean labels. Metagenics uses only the purest ingredients and are committed to non-GMO, Gluten Free, and Vegetarian products. Metagenics provides products that are triple GMP certified for clean manufacturing practices, purity and high quality.