Anon, can you tell me why, when people talk about Vit. D, they always say the dosage in iu's for mgs? I don't even know what an iu is. How does a non medical fag know what to buy?
Anon, can you tell me why, when people talk about Vit. D, they always say the dosage in iu's for mgs? I don't even know what an iu is. How does a non medical fag know what to buy?