Dietary Supplement. Bi-Layer: quick release layer; extended release layer. Aids in the conversion of food into energy. Over 40 Years of Trusted Quality: At Nature's Bounty, we are committed to your health. For over 40 years we have been making trusted products, backed by science, and made with only the purest ingredients - guaranteed. So you can get the most out of life every day. Caffeine free. Stimulant free. Guaranteed quality. Laboratory tested. Nature's Bounty Dual Spectrum B-12 has taken nutritional support from this B vitamin to a new level. Each bi-layer tablet features ISR technology, a specialized delivery mechanism that provides the benefits of immediate and sustained release in one convenient tablet. Dual Spectrum B-12 from Nature's Bounty gives you the stimulant-free support for your dietary needs and aids in converting food into energy. Nutrition questions or comments? Call 1-800-433-2990 Mon.-Sat. 9AM-7PM ET. Join our Loyalty Program at NaturesBountyRewards.com. Non-GMO, no artificial flavor, no artificial sweetener, no preservatives, no sugar, no starch, no milk, no lactose, no soy, no gluten, no wheat, no yeast, no fish. Sodium free. Suitable for vegetarians. (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.) Made in the USA with select ingredients from around the world.