NOTE: Actual product packaging may differ from image shown due to packaging updates by manufacturer. Dietary Supplement. Support Energy Metabolism*. The B-Complex is essential for the maintenance of a healthy nervous system.* The B vitamins play a role in energy metabolism in the body.* These tablets provide an excellent source of Thiamin , Riboflavin , Niacin , and Vitamin B-12 to help safeguard a sufficient daily intake. Guaranteed Quality Laboratory Tested Suitable for Vegetarians.