I have a 15 years old girl following keto diet for 2 months already, had lost hair recently, is it safe to take biotin? and how many mcg the best for her to take?

Many of the over the counter supplements are not adequately tested and in particular among teens. A multi vitamin though from a major brand should be fine, but please check with your PCP. Exercise and a weight reduction program may be available at your local health center. A referral is usually required and can be sent by your PCP.

Although the benefit of biotin in hair loss has not been conclusively proven , it is common to supplement a keto diet with biotin .The recommended dose for a15 yr old would be around 25mcg daily . Also it would be good to eat biotin rich foods like avocado, salmon, mushrooms, egg yolks and liver, besides ensuring an adequate intake of protein, zinc , iron and vitE.