Rainbow Light's Complete B-Complex' formula delivers a complete, high-potency B-complex plus added support for overall vitality and a healthy nervous system, with: Nervous System Support - from minerals such as calcium, magnesium and potassium, plus amino acids - all of which play important roles in supporting energy production and healthy nervous system function. Absorption Enhancing Co-Nutrients - such as zinc, manganese and 500 mg of vitamin C with bioflavonoids. Energizing Foods and Herbs - to calm and soothe (California poppy, orange essential oil), while supporting energy (gotu kola, American ginseng, ashwagandha), immunity (bee pollen) and overall vitality (spirulina, barley grass). This formula is designed for optimal assimilation and utilization.