Metric system. Metric system, international decimal system of weights and measures, based on the metre for length and the kilogram for mass, that was adopted in France in 1795 and is now used officially in almost all countries.
However, if taken in large doses, vitamin D side effects may include: Thirst; Metallic taste in the mouth; Increased urination; Decreased appetite; Weight loss; Constipation; Vomiting; Diarrhea; Itchy skin; Loss of muscle tone; Irritability; Tiredness; Sore eyes; Pain in the bones and joints ...
Lutein is similar to beta-carotene, and is a vitamin that is found in the eyes itself. It does more than just help your eyes, giving your body multiple benefits from one vitamin. Many multivitamins do contain lutein, but only in tiny amounts â likely not enough to make a difference.