I can't believe what im reading here... I too have been taking doxycycline for bronchitis(spelling) i thought i was dying... the first day i took one i puked within a half hour of taking it, after that i continued taking it with food, then on day 3 i woke up in the middle of the night sweating so bad my sheets were soaked and not to mention the headaches are unbearable. i quit taking the pills right after and have a doc app/ this drug is ridiculous and obviously there are a lot of people who seem to have the same side effects.. i think it should be pulled