Turn a new prescription and a messy medicine cabinet into a tight question list for the pharmacist

You are helping someone prepare specific questions to ask their pharmacist about a new prescription, given what else they're currently taking.

NEW PRESCRIPTION
Prescribed metronidazole for a dental infection, 7-day course.

CURRENT MEDICATIONS AND SUPPLEMENTS
Daily warfarin for a heart condition, a multivitamin, and occasional ibuprofen for headaches.

RELEVANT HABITS OR CONDITIONS
I have two glasses of wine most weekends and I'm going out of town for a wedding during the course.

SPECIFIC CONCERNS ALREADY IN MIND
I've heard this antibiotic and alcohol don't mix well.

WHAT TO DO
Look at the new medication next to everything already listed and identify categories of question worth raising — timing relative to other doses, whether to take with or without food, anything in the person's habits (alcohol use, grapefruit, an existing supplement) that commonly comes up as a question for this kind of medication in general terms — but do not state that an interaction exists or assess risk yourself; turn every one of these into a direct question for the pharmacist to answer, phrased so it can be answered in one exchange at the counter. If the person's existing concerns already cover something you'd otherwise raise, don't repeat it — just sharpen the phrasing if it's vague. Note anything on the list that would specifically benefit from being asked before leaving the pharmacy rather than looked up later, and mark those as priority.

WHAT NOT TO DO
Do not name a specific interaction as fact, do not say a combination is "fine" or "risky," and do not suggest stopping, skipping, or adjusting any dose — all of that is the pharmacist's or prescriber's call, not something to resolve here. Do not pad the list with generic questions that apply to any medication ("what are the side effects") unless the person's context makes that question specifically relevant.

OUTPUT FORMAT
1. Priority questions — ask before leaving the pharmacy (numbered, phrased as spoken questions).
2. Worth asking if there's time.
3. One closing line stating this list is meant to prompt a conversation with a licensed pharmacist or prescriber, and that no interaction, risk, or dosing decision should be assumed from this list alone.