A food supplement. Do not exceed the recommended daily dose, as too much magnesium can cause loose stools or stomach upset, and very high long-term vitamin B6 can affect the nerves. Tell your doctor if you have kidney problems or take other medicines (magnesium can affect some, such as certain antibiotics. Space them apart). If pregnant, breastfeeding or on medicines, ask first. Store in a cool, dry place. This product information is for general guidance only and does not replace professional medical advice. Keep out of reach of children.