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 ...
This blue-green algae is very rich in vitamin A, and this vitamin is exceptionally important for healthy eyes. For this same reason, eating more carrots has long been recommended to those looking to improve their eye health, but spirulina actually has ten times the vitamin A concentration gram per gram of carrots.