Procedure prep
Fasting Before a Tonsillectomy
Tonsillectomy is done under general anesthesia and is common in children, so fasting — including the special milk timings for little ones — matters.
Fasting for this procedure
→ Get your exact fasting times with the calculator
Medicines to check
- Blood thinners (aspirin, clopidogrel, warfarin, Eliquis, Xarelto) — see medications to stop.
- Diabetes medicines & insulin — they need a plan. See diabetes tablets.
- GLP-1 (Ozempic, Wegovy, Mounjaro) — tell your team. See the GLP-1 guide.
- Blood pressure medicines — confirm which to take with a sip of water and which to hold.
- Avoid ibuprofen/aspirin-type painkillers before surgery unless your team approves (bleeding risk).
When this surgery may be delayed
- Fever, a new cough/cold, or a chest infection
- Vomiting or diarrhea
- Very high blood pressure or blood sugar
- You ate or drank outside your fasting window
- An active throat or chest infection or fever
Reports & documents to carry
- Photo ID and insurance card
- A written list of all your medicines and doses
- Any blood tests, ECG, or scans your team asked for
- Consent forms or referral letters, and allergy details
- A comfort item for a child (toy or blanket)
- A ride home
What to ask your anesthesia team
- Will I have general anesthesia, spinal/regional, or sedation?
- Which medicines do I take or hold on the morning of surgery?
- When can I eat and drink afterward?
- Will I go home the same day, and who can drive me?
- For my child: exactly when do breast milk and formula need to stop?
Your prep checklist
Tick things off as you sort them — saved on this device only, nothing is sent anywhere.
A general guide — your hospital's own instructions always come first.
Frequently asked questions
How long should my child fast before a tonsillectomy?
Usually solids about 8 hours before, breast milk about 4 hours before, formula or cow's milk about 6 hours before, and clear liquids about 2 hours before your hospital arrival time. Use the calculator's child option for exact times.
Can my child drink water before a tonsillectomy?
Yes — small amounts of clear liquid (water, clear juice) are usually allowed up to about 2 hours before arrival, which helps a child feel less hungry and upset.