"growing up i always had very mild acne that was easily taken care of with a prescription from the dermatologist. i am now 24 and began experiencing severe acne at 23. i began taking doxycyline in july. like many of the previous reviews state, it takes a solid 4-5 months to really see results. i am telling you though, stick with it! i take 100mg of doxycycline twice a day. i am also using clindamycin after i wash in the morning and at night. i use retin-a mirco cream 0.05% right now (but started with .025%). the retin-a played a huge factor in this process. i was originally prescribed something else and had my doctor switch me to this. in addition to these prescriptions i use a face wash with benzoyl peroxide in the morning and cetaphil at night. it works!"