Day-of questions
Can I Chew Gum, Brush My Teeth, or Smoke Before Surgery?
The little questions that keep you up the night before. Here are clear yes/no answers — and the simple reason behind each one.
Quick answers
| Question | Answer |
|---|---|
| Chew gum? | No |
| Brush teeth (don't swallow)? | Yes |
| Smoke? | No — stop 12–24h+ before |
| Hard candy / mints? | No |
| Take sips of water with pills? | Sometimes — ask your team |
Chewing gum, mints & hard candy
All three are a no once your fasting window begins. Even though you're not swallowing food, chewing and sucking stimulate your stomach to produce acid and your mouth to produce saliva. Under anesthesia, that extra fluid raises the risk of it coming up and entering your lungs (aspiration).
Important
Brushing your teeth
This one is a yes. You can brush your teeth on the morning of surgery to feel fresh — the key is simply don't swallow the water. Rinse and spit. The tiny amount that remains is not a problem.
Smoking
Stop smoking for at least 12 to 24 hours before surgery — and the longer the better. Even a day without cigarettes measurably improves the oxygen your blood carries, but stopping for several weeks reduces lung and wound-healing complications the most. Smoking also irritates your airway, which matters when a breathing tube is involved.
Quitting for good?
Taking your medications
Many essential medications are taken with a small sip of water on the morning of surgery — but some need to be held, and a few stopped days in advance. Don't guess. See which medications to stop before surgery, and confirm your personal list with your team.
Frequently asked questions
Can I chew gum before surgery?
No. Chewing gum stimulates stomach acid and saliva, which can increase the risk of aspiration under anesthesia. Avoid gum once your fasting window starts.
Can I brush my teeth before surgery?
Yes, you can brush your teeth on the morning of surgery — just don't swallow the water. Rinse and spit.
Can I smoke before surgery?
You should stop smoking for at least 12 to 24 hours before surgery, and ideally much longer. Smoking affects oxygen levels, anesthesia, and healing.
Can I suck on a hard candy or mint before surgery?
No. Like gum, hard candy and mints count as oral intake and stimulate the stomach. Avoid them during your fasting window.