http://www.medications.com/effect/view/22455 I've been taking doxycycline for a few days now. The first few days i felt dizzy, and I had shortness of breath and a heavy chest, the next day I vomitted, and had sharp pains in my stomach. I realized it was because I didn't take it with food, now I take Sun, 22 Jul 2007 19:42:38 -0400 http://www.medications.com/effect/view/22455?item=849 I have took this medication a lot, but not for bacteria infection, just colds in chest or sinus infection. I have always got the other infection from the medication. I have had bacteria infection so many times it's not right. But the Dr. gives me other med http://www.medications.com/effect/view/22455?item=849