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 ...
But that doesnât mean your eyes donât feel the effects of diet â just the opposite, really. Your eyes are delicate organs and require a mix of nutrients to stay at their best. Vitamin B12 is among them, though researchers are still learning more about its exact role in keeping eyes well. The Basics of B12.