lyme disease
"I was prescribed 1-2 months of doxycycline to treat my Lyme Disease. The first 2 weeks I was very nauseous, even when I took it with food. DEFINITELY TAKE DOXYCYCLINE WITH FOOD.  After 2 weeks my body adjusted and I felt better. The doxycycline made me feel bloated and tired the whole course, but it's totally worth it to be Lyme free.  I have one week left in my course so I do not know for sure if it worked, but it worked for my brother who took the same med for the same reason a few years ago."