Magnesium Natural Sea contains natural marine magnesium plus Vitamins B1, B2, B6 and B12. Magnesium reduces the feeling of fatigue and tiredness, takes care of the normal functioning of the nervous system and improves muscle function and proper protein synthesis in the body. Vitamin B1 (thiamine hydrochloride) contributes to normal heart function, and Vitamin B2 (riboflavin) contributes to the normal course of metabolism and energy production. Vitamin B6 (pyridoxine hydrochloride) promotes normal cysteine synthesis, supports normal homocysteine metabolism and the natural course of protein and glycogen metabolism. Vitamin B12 (cyanocobalamin) helps in the normal formation of red blood cells, the normal function of the immune system and in reducing the feeling of fatigue and tiredness.