Metronidazole
"I have been schedule to take this 500mg medication twice a day for 7 days. I was told to drink it with a full glass of water every time I took my dose and it has the worst taste ever. Since I have been on this medication I have not been able to function due to the side effects of headaches and dizziness. I get so sick that I had to take Tylenol and Aleve to relieve the horrible headaches I was getting. But overall score on this medication I would give it an 8."