Birth Control

Hey ya’ll. What is the strongest form of birth control? Also what is the highest mg a doctor is allowed to prescribe? I’m on other pills that lessen the effect of birth control pills and I want to make sure the birth control pills work. When I tell my doctor I want to know what I’m talking about. She doesn’t know what birth control pills work with the pills that lessen the effect of them so I would have to go to a gynecologist to get a recommendation and I don’t want to pay that money lol. So if you know anything about this topic that would rly help me out. Thank ya ;)