How much biotin is safe for dogs? In a collaborative study with small-animal veterinary surgeons (Frigg M, Schulze J, Völker L.), dogs with fur and skin conditions were treated with biotin (approximately 5 mg biotin/10 kg body weight/day) for 3 to 5 weeks.Biotin Plus Ultimate Skin and Coat Formula.
Does biotin have negative side effects? There are currently no known adverse side effects of biotin when taken as prescribed by a doctor or through normal dietary intake. There are some cases where certain dietary or other habits have caused a deficiency of biotin.
Does too much biotin have side effects? 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.