Lactaid for lactose intolerance: what to know

Lactose is the natural sugar in milk. When the small intestine makes too little lactase, undigested lactose reaches the colon, where it can cause gas, bloating, abdominal pain, or diarrhoea. Lactase tablets or drops add the missing enzyme for a particular dairy serving; they do not cure the underlying intolerance or make every food suitable. Response varies with the amount of lactose, the product instructions, and the person. Milk allergy is different: it involves an immune reaction to milk proteins and needs a different approach.

Follow the product label and take the enzyme at the time directed, usually with the dairy food it is intended to help digest. Start by noticing which portions and products trigger symptoms. Lactose-free milk, yoghurt, or aged cheeses may be easier for some people, while a nutrition counsellor can help protect calcium and other nutrient intake if dairy is reduced. Check combination foods and medicines for lactose when relevant. If symptoms continue despite avoiding lactose or using lactase, a clinician can consider another digestive condition or food intolerance testing.

Seek urgent help for swelling of the lips or tongue, breathing difficulty, faintness, or widespread hives after milk, because these features can indicate an allergic reaction rather than lactose intolerance. Arrange an appointment for blood in stool, persistent vomiting, weight loss, nighttime diarrhoea, fever, dehydration, or symptoms that keep returning. A child with poor growth or a person who cannot maintain food and fluid intake also needs clinical assessment.

Do my symptoms fit lactose intolerance or another condition? How should I use a lactase product with my usual meals? Which dairy foods or alternatives can meet my nutritional needs? Would testing help, and what symptoms should prompt earlier review?