No age-related problems expected. No age-related problems expected. Too much over a long time may be harmful. A balanced diet should provide all the vitamin D a healthy person needs and make supplements unnecessary. Best sources are fish and vitamin-D fortified milk and bread.
Some products contain tartrazine dye.
Avoid, especially if you are allergic to aspirin. Cholestyramine Decreased vitamin D effect. Colestipol Decreased vitamin D absorption. Cortisone Decreased vitamin D effect. Digitalis Heartbeat preparations irregularities.