Advanced Delivery System. Increase Energy. Promote Cardio Health. With B6, Biotin, and Folic Acid. Highly Bio-Available Form of B12. Naturally Sweetened. Vegetarian and Gluten Free. 12 Deficiency May Cause: Fatigue. Depression. Poor Memory. Neurological Symptoms. High Homocystiene Levels. Poor Circulation. A B12 supplement specifically engineered for performance that fuels your healthy lifestyle. Essential Source strips were designed to have a large surface area. As a result, they absorb almost instantly leaving less room for product waste. With most other sublinguals, consumers have the ability to chew and/or swallow too early, causing under utilization of the ingredients. Another reason they are so popular is just the convenience. It is easier to carry the tiny cassette than some other sublinguals, liquid drops, or sprays. Since B12 is often used for energy, people can take them any time they are in need. This product was manufactured in a GMP approved facility. 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.