Help?

Okayy Well for starters every since the 7th grade i have had pretty bad acne. i Swear i have literally used everything. Well about 8th grade i started using Benzaclin it worked very well 9th grade came my face was literally flawless. Well now im going into the 10th grade. It seems to be wearing off like all my acne is coming back. Is that normal for a medication for ance to wear off? Please help for any suggestions.