Nerve Renew Vitamin B2, also known as Riboflavin, is the vitamin that breaks down protein into its various constituents like amino acids, fats, and carbohydrates. This breakdown enables the body to take the nutrients and use them comfortably. Your body then becomes more energetic and productive. To add to this is Benfotiamine which helps to protect the cells by acting as a covering or wall to the cells. Vitamin D, Feverfew herb, Oat Straw, Skullcap extract, and Passion Flower are the other vital ingredients in this supplement.