Can biotin irritate stomach? Biotin supplements can cause problems if you take too much. Side effects can include skin rashes, digestive upset, problems with insulin release, and kidney problems.
Does biotin have side effects? Vitamins and supplements can have a negative effect on some medications and medical conditions. There are currently no known adverse side effects of biotin when taken as prescribed by a doctor or through normal dietary intake.
Is it better to take biotin on an empty stomach? Many people ask themselves when is the right time to take biotin. Taking it is independent of the time of day. However, biotin in the form of food supplements should always be taken on an empty stomach or 30 minutes after a meal.