<s>[INST] Hello, I have been prescribed a course of metronidazole (400mg) for a tooth/gum infection but I also have some herbal drops to take every 2 days (the suspension is alcoholic) - 40ml. Is it okay to take that - if I take the last metronidazole of the day 5 hours before taking those drops? Thanks Andie [/INST] thanks for your query, i have gone through your query, the metronidazole has mild interaction with drugs containing alcohol or alcohol. it can cause nausea, vomiting, increased heart rate. so its better to avoid the other drugs when you are on metronidazole. i hope my answer will help you. take care. </s>