Lactose intolerance is a problem in which the patient cannot digest lactose, which is the milk sugar. Lactose is an ingredient of many dairy products. The main cause of this problem is lactase deficiency. Lactase is an enzyme that is formed in the small intestine in its lining. The main symptoms of this disease are diarrhea and vomiting. The affected person can have nausea. The patient suffers from stomach problems like gas and bloating. There can be abdominal cramps. Symptoms of this disease can be controlled if you limit the intake of dairy products. Use home remedies for curing the problem. The best home remedies for lactose intolerance are as follows.