Metronidazole
"Personally after reading these stories & not knowing if everyone (besides those who stated) was taking Meronidazole with something else. I have had a few flare ups and I cannot take a combination of Cipro/Metronidazole as this causes the weird feelings and extreme lethargy. Metronidazole alone ( besides the bad taste when you pop it) no problems. Occasionally slight nausea & bloating but nothing else. I just don't take the combination anymore which was horrible. Straight Metronidazole now 500 mg 3x a day 10 days..done."