01Alcohol and disulfiram
FLAGYL stays closed with disulfiram. Psychotic reactions were reported in alcoholic patients who used both at the same time. Do not give metronidazole to anyone who has taken disulfiram in the last two weeks. Oral metronidazole is also tied to a disulfiram-like reaction to alcohol, including abdominal cramps, nausea, vomiting, headaches, and flushing. Stop alcohol and products that contain propylene glycol during therapy and for at least three days after the last dose.
02First trimester in trichomoniasis
In people with trichomoniasis, FLAGYL is contraindicated during the first trimester of pregnancy. Later in pregnancy, when other treatment has already failed, the one-day course is not used, because it produces higher serum levels that can reach the fetal circulation.
Generic metronidazole 500 mg, a fourteen-tablet course - the strength sold as Flagyl 500 mg, checked October 2026. GoodRx Flagyl page lists the common version as low as $9.66. We do not invent a retail figure for a fourteen-count pack. The alcohol warning still applies. Kaelis Med does not dispense.