diverticulitis
"I was diagnosed with diverticulitis in the ER I was given 2 antibiotics. I remember one of them leaving such a horrible taste in my mouth that I literally scrapped the back of tongue with a paper towel. From the prescription I learned the names Ciprofloxacin  and Metronidazole, take every 12 hrs for 10 days. By the 3rd dose I had the strongest headache ever, and diarrhea! The pharmacist told me that the headache was a result of the diarrhea because my body was being drained. Said I should increase on my water intake. Today I'm at dose 5 and I must say the pain has subsided greatly now at "3". I did increase my water intake, and although the diarrhea is still here, the headache too has subsided now at a "2"."