What pill makes my hair grow longer/faster?

So my hair is up to my shoulder right now and I would love to find a pill or something that can make my hair grow up to my knee as fast as possible. I don't mind if the price is big or small, I'd just like to know the product. It really doesn't matter if it takes weeks or months, I just need my hair long as fast as possible. I'd prefer it thin, not thick, so if the pill/product makes your hair long AND thick then I'd not want that. My hair is naturally thick, but I thin it often. THANK YOU~!!! <3 <3 <3