Gnc superfoods kelp gnc superfoods kelp: each tablet provides 33. 75mg of kelp, plus 80mg of calcium and 225 mcg of iodine (from kelp). Vegetarian formula: these kelp tablets are suitable for a vegetarian diet. Backed by science: since 1935, gnc has been committed to meeting the highest standards of quality, safety, and efficacy while applying the most up-to-date advances in nutritional science so you can live well. These statements have not been evaluated by the food and drug administration. This product is not intended to diagnose, treat, cure, or prevent any disease. . Gnc superfoods kelp - 180 vegetarian tablets (180 servings)