Metronidazole
"Suffer with G.O.R.D. so the heartburn has been awful, only day 3, 250mg twice a day with food. Have been very dizzy, light headed & felt like holding onto things to steady myself. Yesterday after walking & been on feet all day, got tingling/ pinching pain in one leg, went away after elevation & rest.  Have had lower back & pelvis ache. A little nausea, but no real trouble eating, just the reflux making it seem worse. No trouble so far with bowel movements or urine discolouration. Infection clearing within the first two days, discomfort from abscess in glands gone after day one. Side effects much more tolerable than dental pain so far."