Biotin 5000 mcg by NOW Foods is an excellent dietary supplement in capsule form with the active ingredient biotin (B7). Biotin is a water-soluble vitamin necessary for the normal growth and function of the body.

As a B-complex vitamin, it contributes to:

• the maintenance of proper immune system function
• the metabolism of carbohydrates, fats, and proteins aimed at energy production

Vitamin B7 is involved in numerous metabolic reactions such as:

• the synthesis of fatty acids
• gluconeogenesis
• the metabolism of leucine
• the metabolism of branched-chain amino acids

The action of biotin is due to its ability to bind and transport carbon dioxide, which is used as a substrate for many synthesis reactions.

Biotin deficiency or insufficiency, although extremely rare, can affect the skin and hair.