It is a type of B-vitamin that plays an important role in a number of bodily functions. It is commonly used as a dietary supplement to support healthy skin, hair, and nails. It is also involved in the metabolism of carbohydrates, fats, and proteins, and can help to support healthy blood sugar levels. In addition to its use as a dietary supplement, it may be prescribed by a healthcare professional to treat certain medical conditions. For example, it may be used to treat biotin deficiency, a rare condition that can cause hair loss, skin rashes, and neurological symptoms. It may also be used as a supportive treatment for conditions like diabetes, neuropathy, and multiple sclerosis. It is important to follow the dosage instructions provided by your healthcare professional or on the supplement label when taking biotin, as excessive intake of biotin can cause side effects. Additionally, biotin can interact with certain medications, so it is important to speak with a healthcare professional before taking biotin if you are taking any prescription medications or have any underlying medical conditions.