Any suggestions on acne?

Ive tried proactive, sycilic acid based creams, pretty much everything. I've never had bad acne either until I lost a lot of weight. Now I have moderate acne and scarring. The deratologist just gave me pills that didn't work and a body wash lotion type thing. Is there anything else that people have tried and worked on the most stubborn acne?
Any suggestions on acne?
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