Floppy boobs & low milk supply

I'm only 7 weeks pp and my boobs are light and floppy! I've done everything to help my supply but nothing helping me, I hear theres a medication that helps but I have questions for anyone the takes/took it.

What were your side effects?

Did it help you?

What doctor do I see about it? My OB or Primary?

* I know my supply is low please don't try and tell me otherwise, I'm asking about this medication, not if my supply is low but thank you.