I have acne, i use deriva , this is my 5th week , bt i still get acne, what should i do..why is that.

Doctor can recheck: After starting acne medication, one usually waits 1-2 months to see what the changes are. So, 5 weeks may not be long enough. However, the prescribing doctor can recheck at this time. He may decide to wait a few weeks longer, or may add another medication, because acne often needs a combination of medications for better benefits.