Doxycycline Hyclate Side Effects: I took doxycycline for a little acne on my back I would get when http://www.medications.com/effect/view/37503 I took doxycycline for a little acne on my back I would get when I worked out. I am a fit healthy man of 48 years. People tell me I look late twenties early thirties. I have to tell you all my experience with this antibiotic has been a nightmare for me. How are you doing now? and what are you taking to get better? I t Mon, 23 Mar 2009 10:11:01 -0400 http://www.medications.com/effect/view/37503?item=18370 How are you doing now? and what are you taking to get better? I to have bad side affects. Sorry you are going through this it is bad. http://www.medications.com/effect/view/37503?item=18370