| Ingested Material | Minimum Fasting Period |
| Clear Liquids2 | 2 hours |
| Breast Milk | 4 hours |
| Infant Formula | 6 hours |
| Non-human milk | 6 hours |
| Dry toast only | 6 hours |
| All solids for pregnant women | 8 hours |
| All other solids and liquids | 8 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.