Doxycycline Hyclate Side Effects: Last December I was also prescribed Doxycycline Hyclate 100mg for http://www.medications.com/effect/view/42478 Last December I was also prescribed Doxycycline Hyclate 100mg for mild acne. I am 17. After a few weeks of taking it my acne appeared to have been getting better and I felt quite relieved. However, after about a month and a half of taking it, I woke up one This can happen when you don't drink a large glass of water with Sat, 22 Aug 2009 21:29:14 -0400 http://www.medications.com/effect/view/42478?item=22440 This can happen when you don't drink a large glass of water with it and don't lie down for a hour after taking it. http://www.medications.com/effect/view/42478?item=22440