What Is the First Treatment for Lactose Intolerance?

This is often a structured trial rather than a decision to avoid every dairy food indefinitely. The amount that causes symptoms differs between people.

Lactose is the natural sugar in milk and many dairy products. When the small intestine makes too little lactase, lactose is not fully digested before it reaches the large intestine. This can lead to bloating, wind, abdominal discomfort or loose stools after dairy foods.

A clinician may suggest reducing milk, ice cream or other high-lactose foods for a short period, then testing small portions. Some people tolerate yoghurt, hard cheese or lactose-free milk more easily. A symptom diary can help connect specific foods and portion sizes with symptoms.

Reduce the foods that trigger symptoms and check labels for milk, whey, milk powder and cream. Do not remove all sources of calcium or vitamin D without replacing them with suitable foods or a clinician-approved supplement. Eating smaller portions with other food may be easier than having a large serving on its own.

Lactase tablets or drops may help some people digest a meal containing lactose, but they are not right for every situation. If symptoms continue despite dietary changes, a clinician may assess other causes or arrange food intolerance testing. Nutrition counselling can help protect a balanced diet, especially for children, teenagers, pregnancy or restricted diets.

Arrange a medical review if symptoms are frequent, worsening, occurring without dairy, or interfering with eating, sleep or daily activities. Ongoing diarrhoea, vomiting, weight loss, blood in the stool, fever or significant abdominal pain needs prompt assessment because lactose intolerance may not explain these features.

Seek urgent help for severe or rapidly worsening abdominal pain, repeated vomiting, faintness, marked dehydration or swelling of the lips or face with breathing difficulty. These symptoms need assessment rather than a home elimination trial.

Ask which foods and portions to test, how to maintain calcium and vitamin D intake, and whether another condition could be causing your symptoms. You can also ask whether lactase products or food intolerance testing would add useful information.