Stop consuming dairy or lactose-containing foods immediately
Drink water in small sips
Rest and avoid strenuous activity
Take an over-the-counter lactase enzyme tablet if available and appropriate
Use an over-the-counter antacid only if it is safe for you and labeled for gas or bloating relief
Apply a warm compress to the abdomen
Avoid carbonated drinks, greasy foods, and high-fiber foods until symptoms improve
Try peppermint tea or ginger tea if tolerated
Use the bathroom when needed and do not hold in gas or stool
Seek urgent medical care if pain is severe, persistent, or accompanied by vomiting, fever, blood in stool, swelling, or trouble breathing