Biotin is a popular supplement taken by many women nowadays to improve their skin or grow their hair and nails. Though it has so many benefits, here are 9 unexpected and potentially dangerous negative side effects of biotin. Also, not all these things will necessarily happen just because you take biotin, but it?s important to be aware of it and proceed with caution before taking it.

9 Side Effects of Biotin Tablets
1. Acne

Too much biotin can cause cystic acne along the chin and jawline which can be too painful. Biotin increases sebum production in the skin, making way for ruptures and dirt accumulation. But once when the biotin dosage is stopped, acne fades away.
2. Allergic Reactions

Some people may suffer from allergies due to the intake of biotin supplements which is more common in those with an allergy to Vitamin B12 or cobalt. This will often include nausea, a rash, or swelling of the throat and face. So, if you happen to have any of these symptoms after taking biotin supplements, you need to consult the doctor immediately. 3. Skewed Lab Results

High amounts of biotin can create false positives in laboratory tests for thyroid disease.
4. Effects during Pregnancy

Pregnant women should avoid taking high doses of biotin as this may increase the risk of miscarriage. So, it is always better to consult a doctor before taking biotin during pregnancy.
5. Frequency of Urination

Higher dosage of biotin can cause an increase in the need to urinate. Also, there can be an ...