HI,
my dermatologist told me to use epiduo for my acne. Its not a severe case, but I always have 2 or 3 zits on each cheek and sometimes on my chin or nose. They're usually those big red lumps that you can't pop out, and when i tried it, it would get infected because they're deep.
I've used plenty of products in the past like clearasil, and I've been on epiduo for 5 months now. I only noticed my face getting clearer on this last month and my face didnt react at all to the product (maybe because im used to b.peroxyde).
I didn't get any initial breakout, no dry skin, and no redness.
This year im beginning a serious routine to treat my acne. Ill eat mostly vegetables during the week, and I'll cut all the unnecessary fat I might be eating right now. Ill also wash my pillowcases everyday and try to change the sheets every 2/3 days.
I also wanted to know if is there anything stornger than Epiduo, since im not getting any reaction at all. Im not interested in accutane or anything like that. Thanks 
Yes, the retinoid in Epiduo is adapalene, also know as 'Differin'.
Adapalene (Differin)is considered the weakest retinoid so if your skin is stubborn it may be a little nonreactive to it.
Keep in mind you don't have to experience peeling and irritation for it to work, but after 5 months there is no improvement, I would be wondering.
The next strongest is usually considered to be Retin A Micro (because of its' slower release), then Retin A, and then Tazorac.
I have read posts on people reacting to one retinoid tons better over another so I think you should see your doc/derm for something stronger.