Originally posted August 2, … Side effects can include skin rashes, digestive upset, problems with insulin release, and kidney problems. Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat. Individuals over the age of 10 years with biotin deficiencies should consume between 30-100 mcg… Higher quantities tend to cause side effects. According to science – adults should take between 30-100 mcg of biotin per day. Right from skin problems like acne to respiratory problems, Biotin can be harmful when consumed in wrong quantities. Find out what experts have to say about the benefits and side effects of taking some. Possible Side Effects . “Side effects from having a high dose or overdose of biotin are rare,” says Dr. Khan. Biotin though has these positive effects, there are several side effects it can have. However, most supplements contain higher quantities. For infants born with biotin deficiencies, the recommended supplemental dose is 10-30 mcg/day. View Nature's Bounty Biotin - 1000 mcg (100 Coated Tablets) ... (2000 to 5000 mcg) of biotin … Biotin supplements claim to help with hair loss and weak nails. Note – a microgram is just that – a portion of a gram. Biotin supplements can cause problems if you ingest too much. It can have several side effects… Common side effects may include upset stomach or diarrhea. "Although these side effects are not common for most individuals, it's important to be aware of the possibilities." Typically, adequate intakes are defined as 30 micrograms (mcg) for adults and pregnant women and 35 mcg for breastfeeding women. Drug information provided by: IBM Micromedex. Biotin side effects. Biotin is a water-soluble vitamin found in oatmeal, vegetables, and soy. However, check with your health care professional if you notice any unusual effects … Side Effects. But based on my experience and the reviews I have read in various products – here’s what I would say: Any dosage under 1000 mcg per day is safe. However, the FDA has suggested that an adequate dose of Biotin for adults and adolescents over the age of 14 is between 30mcg and 35mcg. And there you have your brush up on biotin. Call your doctor for medical advice about side effects. No side effects have been reported for biotin in amounts up to 10 milligrams a day. That means every 1000 mcg … This is not a complete list of side effects and others may occur. This means that any excess biotin will, theoretically, pass through the body in the urine.