Vitamin B-complexes are often called “stress formulas” for their ability to support the vital energy systems of the body. B vitamins work synergistically to help the body use its carbs, fats and proteins in the most efficient and effective way possible and boost energy production. We have added L-theanine to complement our full spectrum B-Complex. L-theanine is a powerful amino acid derived naturally from green tea plants (Camellia sinensis) that promotes a restful, relaxed state without diminishing alertness so that you can stay focused and productive. So sit back, relax and let Orange Naturals B-Complex do the work! Product information is provided by the product vendor. This content is a summary for informational purposes only and does not have all possible information about this product. It should not be used as a substitute for advice from health care professionals, as this information alone does not assure that this product is safe, effective, or appropriate for you. For more detailed information on this product, including reported and possible side effects and contraindications, refer to the manufacturer's monograph, or speak with a health care provider.