Common symptoms of lactose intolerance include - abdominal bloating, a feeling of fullness or swelling in the abdomen - abdominal pain - diarrhea - gas - nausea Symptoms occur 30 minutes to 2 hours after consuming milk or milk products. Symptoms range from mild to severe based on the amount of lactose the person ate or drank and the amount a person can tolerate. 
What are the symptoms of Lactose Intolerance ?