I m currently taking doxycycline for adult acne..I have been on it for approx two months now. I agree that the itching is irratating to say the least but it appears to have stopped now. I have been extremely moody and came on here to do research because i eat everything in my fridge like all day long. Its just this constant feeling of hunger. I am glad to have read that others are experiencing the same things..i thought i was going nuts. I have always been at a stable weight about 100 pounds all of my life (in 30's now) I can't believe the weight i have gained. Its unreal. So im giving it one more month and then thats it. Please let me know if anyone on here has a better suggestion for a medicine for adult cyctic acne......please hurry i am starting to think my lttle doggie would be good with some sauce on the grill....Thanks