It contains the same amount of fursultiamine, a vitamin B1 derivative that is effective against fatigue, as Alinamin V. It also contains 400mg of inositol, the maximum standard amount, which is a component involved in fat metabolism. Product contents: Fursultiamine hydrochloride, riboflavin sodium phosphate, pyridoxine hydrochloride, nicotinamide, sodium L-aspartate, anhydrous caffeine, inositol. Instructions: Store away from direct sunlight and in a cool, dry place.