Ingested MaterialMinimum Fasting Period
Clear Liquids22 hours
Breast Milk4 hours
Infant Formula6 hours
Non-human milk6 hours
Dry toast only6 hours
All solids for pregnant women8 hours
All other solids and liquids8 hours

Based on American Society of Anesthesiologists Practice Guidelines for Preoperative Fasting to Reduce the Risk of Pulmonary Aspiration.

2Examples of clear liquids include water, fruit juices without pulp, carbonated beverages, clear tea, and black coffee without cream or sugar.