Retinol : Vitamin A

Retinol, the most useful form of vitamin A, (along with retinal[?] and retinoic acid[?]) is a fat-soluble vitamin important in vision and bone growth. It is sometimes used in the treatment of severe acne. As can be seen from the structure, this is a compound synthesized from isoprene.

A deficiency of vitamin A isn't only disease causing, it can kill. On the other hand, overdoses of vitamin A are also lethal. For example, the liver of the polar bear has enough vitamin A to kill a man.

External link:

http://www.cc.nih.gov/ccc/supplements/vita.html

		Retinol : Vitamin A
		Retinol, the most useful form of vitamin A, (along with retinal[?] and retinoic acid[?]) is a fat-soluble vitamin important in vision and bone growth. It is sometimes used in the treatment of severe acne. As can be seen from the structure, this is a compound synthesized from isoprene. A deficiency of vitamin A isn't only disease causing, it can kill. On the other hand, overdoses of vitamin A are also lethal. For example, the liver of the polar bear has enough vitamin A to kill a man. External link: http://www.cc.nih.gov/ccc/supplements/vita.html
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