Elevated levels can cause calcium buildup and kidney stones. Yes, but what does that mean in terms of dosage? I'm typing from memory, so look this stuff up you

Elevated levels can cause calcium buildup and kidney stones. Yes, but what does that mean in terms of dosage? I'm typing from memory, so look this stuff up yourself, but IIRC, one study found that 5000 IU daily resulted in about 50 ng/mL blood serum levels in average weight people, and 10000 IU daily resulted in a bit over 100 ng/mL. Harmful effects are seen just over 200 ng/mL. I am not a doctor, and this isn't medical advice.