Disulfiram (Antabuse) be taken concurrently with metronidazole (Flagyl) - electroconvulsive therapy causes arrhythmias and death

- Disulfiram (Antabuse) shouldn’t be taken concurrently with metronidazole (Flagyl) because they may interact and cause a psychotic reaction.

- In rare cases, electroconvulsive therapy causes arrhythmias and death.