how long does the stomach empty after a meal?
Answered by The Community. Making the world better, one answer at a time. Approximately 2 to 3 hours after a meal. I have had antibiotics that had to be taken on an empty stomach, and the pharmacist told me to take them one hour before or 2-3 hours after a meal.nswered by The Community. Making the world better, one answer at a time. Approximately 2 to 3 hours after a meal. I have had antibiotics that had to be taken on an empty stomach, and the pharmacist told me to take them one hour before or 2-3 hours after a meal.