Yea, I'm taking the 90 mg also. Along with that and spironolactone, I use Ziana at night and differin in the morning and I wash with a sulfur based wash. My face is clear and I started noticing a difference within the first week and in two weeks my face was greatly improved. Is been two months and my face is clear now. The only thing is that my face got really dry and itched. I used shea butter which really helped. The other thing I'm worried about now is the scar that I have from the acne.