Lactase is the enzyme that splits lactose, the sugar in milk, into forms the gut can absorb. People who make too little of it get bloating, cramps and diarrhoea after dairy, and a lactase supplement supplies what is missing.

What Lactase Enzyme Is Used For

Lactose intolerance in adults and children
Bloating, wind and diarrhoea after milk, yoghurt or ice cream
Drops added to milk for infants, on medical advice
Temporary intolerance after a gut infection

Common Side Effects

Generally well tolerated
Occasional stomach cramps
Allergic reaction, rarely

Precautions

It has to be taken with the first mouthful of the dairy food, since it works on the lactose as it arrives, and a dose taken afterwards does little. Hard cheese and yoghurt are often tolerated without it. Symptoms that include weight loss, blood in the stool or ongoing pain are not simple lactose intolerance and need investigating, since coeliac disease and other conditions can look similar.

This page is general information only. It is not a substitute for advice from your doctor or pharmacist, and it does not include dosage. Always follow the directions given to you and read the leaflet inside the pack.