Niteworks is a refreshing powder mix containing l-arginine which helps create more nitric oxide during the night. research indicates the l-arginine helps produce nitric oxide, which can protect your cardiovascular health and help the circulatory system, stay healthy. contains vitamin c, e and folic acid. niteworks is an exclusive formulation containing a blend of two amino acids, l-arginine and l-taurine, designed to help your body naturally boost the production of nitric oxide......................fast facts: niteworks is a refreshing powder mix. it is an exclusive formulation containing a blend of two amino acids, l-arginine and l-taurine includes ala, vitamin c, e and folic acid. it can be used with herbalife’s entire line of nutritional products. available in 300g pack size container and there are 30 servings per container. lemon flavour.........................key benefits: l-arginine which helps create more nitric oxide during the night. keeps blood vessels toned and flexible. proper blood flow and circulation reflects healthy heart, which in turn forms the basis of good health. beneficial for adults of all ages who would like to support their cardiovascular health.