Tablets dissolve quickly in the mouth for rapid absorption. Helps maintain energy levels. Helps the body to metabolize carbohydrates, fats and proteins Jamieson Vitamin B12 2, 500 mcg Fast Dissolving Sublingual Tablets is formulated using the methylcobalamin form of B12 to help in the production of red blood cells and metabolism of carbohydrates, fats and proteins for enhanced energy production | Jamieson Vitamin B12 2500mcg Size 60s