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 ...
Necessary for the function of vitamins B-6, folic acid, and niacin. Involved in formation of red blood cells and maintenance of body tissues, particularly the skin and eyes. Symptoms are dry, scaly skin on face, oral swelling, and cracking at the corners of the mouth. No evidence that high doses have toxic effects.