Does taking acne pills gives negative effect to your health?

My skin is oily and it makes me easy to get pimples no matter how much I take care of it. Recently I went to a pharmacy and they gave me some acne pills to balance my hormone.After two weeks I noticed a very huge difference on my skin.My pimple seems stop growing and my skin is much better.I know this is cool but I just curious if there is any effect of taking this pills.

Does taking acne pills gives negative effect to your health?
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