If too much biotin is taken, it can lead to a variety of unpleasant side effects. Biotin is a B-complex vitamin, also known as vitamin H or B7, that is essential for the health of skin, hair, and nails. In most cases, biotin deficiencies are rare and supplementing with biotin is generally considered safe. However, taking too much can lead to a variety of side effects such as skin rashes, digestive upset, and even kidney problems.
When taken in excess, biotin can cause digestive issues such as nausea, vomiting, and diarrhea. Additionally, it can cause skin reactions such as hives, rashes, and itching. In some cases, it can even lead to anaphylaxis, a life-threatening allergic reaction. It is important to note that biotin can interfere with certain laboratory tests and can lead to false results.
In rare cases, taking too much biotin can cause kidney problems. This is because biotin is water-soluble, which means that any excess biotin that is not used by the body is eliminated through the kidneys. Over time, this can lead to kidney damage and, in extreme cases, kidney failure.
For most people, however, taking too much biotin is not a major concern. In general, it is best to speak with a healthcare professional before taking any supplements to ensure that the dosage is safe and appropriate.