My doctor give me isotretinoin glotret 20 and isopil 30 to take daily these two tablets per day for 50 days but I do not listen what he said properly and I am daily taken 4 tablets per day for 2 weeks now only my face become more dark and very dry now I know that I have to take only 2 tablets per day is there any risk for taken 4 tablets per day please give good suggestion and tell what to do my face become very dark than before.