Biotin 10,000 mcg is a high-dose biotin supplement (10 mg). People commonly take it for hair, skin, and nail support, although evidence is mixed unless someone is actually deficient.
A few important things to know:
Typical daily requirement: about 30 mcg/day for adults.
10,000 mcg = 333× the daily requirement, so it’s much higher than nutritional needs.
High-dose biotin is generally considered safe for many people, but it can interfere with lab tests, including:
thyroid tests
troponin (heart attack testing)
hormone tests
vitamin D and others