Vitamin B12 Supplement. List No. 2886. L202. Maximum strength for adults diagnosed with very low levels of vitamin B12 (For those with vitamin B12 deficiency). No. 1 pharmacist recommended (Based on Pharmacy Times Survey of pharmacists recommending Letter Supplements). USP verified. Nature Made Maximum Strength B12 provides 5000 mcg of vitamin B12, a nutrient essential in supporting optimal health. Supports cellular energy production in the body. Essential for proper red blood cell formation. Helps support healthy homocysteine levels which may help support vascular health. Helps support normal nervous system function. Maximum 5000 mcg - Helps restore healthy levels of B12 in adults with very low levels, as diagnosed by their health care professional using appropriate biomarkers. For more information, visit NatureMade.com. Colors derived from natural sources - no synthetic dyes. No artificial flavors. No preservatives. No yeast or starch. Gluten free. www.NatureMade.com. USP has tested and verified ingredients, potency, and manufacturing process. USP sets official standards for dietary supplements. www.Uspverified.org. Strength Levels of Vitamin B12: Regular - 25 mcg or below; Extra: Above 25 mcg up to 3,000 mcg; Maximum: Above 3,000 mcg up to 5,000 mcg. (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.) Encapsulated and quality tested in the USA.