Vitamin B12 - Supports Energy Metabolism, Nervous System, Cell Health, Heart, Immunity and Red Blood Cell Formation Function: Replenish energy, improve mood Ingredients: Vitamin B12, organic spirulina Directions: Take 1 capsule daily Shipping: Ships within 48 hours on weekdays Shelf life: 2 years Vitamin B12 capsules help break down food into energy for your body to use throughout the day. Vitamin B12 supplementation is important for vegetarians and vegans who may not get enough in their diet. Energy metabolism: Vitamin B12 is involved in the metabolism of fats and carbohydrates and helps maintain normal energy levels. Supports the immune system: Vitamin B12 has a role in the normal functioning of the immune system and helps improve the body's resistance.