 [ Symptoms ] how long should i wait to start taking antibiotic metronidazole if i drank a couple wine coolers friday night i havent started taking them yet bc i knew i was going to drink that night i had about 3 4 wine coolers i just want to be precautious and not puking all ovet the place i drank them friday night could i start todaysunday or just wait til monday [ Disease ] yes you can start the medicine today the alcohol has left the building