We all know there are 2 types of birth control pills. First, combination pills and progesterone-only( aka mini pills.). The combination pill have a higher (just slightly) percentage of effectiveness due to the hormone levels.

My question is do all birth control pills brand have the same effectiveness. Take COMBINATIONS PILLS for example: Levora and Yasmin! They’re BOTH combination pills. But do they have the same effectiveness if taken the same way?