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 ...
Yes, it is possible for you to get blurred eye vision because of vitamin b12 deficiency. The vitamin B12 is also called cobalamin. The nature of vitamin B12 is microbial synthesis and higher plants. The vitamin B12 needs a kind of intestinal secretions which is the internal factor that can help to be absorbed.