Potassium contributes to the maintenance of normal blood pressure, the normal functioning of the nervous system and to normal muscle function. Magnesium contributes to a reduction of tiredness and fatigue, supports electrolyte balance, the nervous system, normal muscle function, normal psychological function and the maintenance of normal bones and teeth. Ingredients:INGREDIENTS: one vegetarian capsule provides: Potassium (citrate) 99mg Magnesium (citrate) 50mg In a base of alfalfa, spirulina & bilberry. Directions:As a food supplement, take one capsule daily with food, or as directed by your healthcare professional.