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Biotin is a water soluble B vitamin also known as B7 or vitamin H, which stands for Haar and Haut, the German words for hair and
Biotin
However, there are metabolic inherited enzyme disorders that can lead to biotin deficiency. In many of my patients I have seen improvement in hair and nails through the use of biotin and also an improvement in blood sugar regulation.
The dose for hair and nails is generally 3000 mcg or 3 mg per day for improving hair and fingernails, and up to 7000 to 15000 mcg or 7 to 10 mg per day for diabetics. It has very low toxicity, if any, and it is often worth a try to see if it improves symptoms of hair loss and weak, brittle, cracked nails as well as regulating blood sugar.
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