giardiasis
"Female, 120 lbs. Was prescribed this medication for a parasitic infection (blastocystis) at 500 mg three times a day for 10 days. I had the pharmacist turn it into 250mg twice, 3 times a day as I have trouble swallowing large pills. After the first day of taking these I woke up at 2 am and vomited a total of 6 times before the gravol finally kicked in. Been taking gravol along with my meds ever since. Also been experiencing brain fog (possibly due to gravol), severe fatigue (gravol again?) and loss of appetite. You absolutely must eat food before taking these, especially if you are prone to nausea like me. Won't know if the med even works until I do a stool test after the 10 days."