Indications
Lactase is a digestive enzyme supplement used to help people who have trouble digesting lactose, the natural sugar in milk. It is used for lactose intolerance in adults and children, and lactase drops are used for babies with colic or tummy discomfort linked to temporary lactose intolerance. It reduces symptoms such as wind, bloating, stomach cramps and loose stools after milk or dairy foods.
How It Works
Normally the small intestine makes its own lactase, which splits lactose into two simpler sugars, glucose and galactose, that the body can absorb. When the body makes too little lactase, undigested lactose passes to the large bowel, where bacteria ferment it and cause gas and diarrhoea. Lactase supplements supply the missing enzyme so lactose is broken down before it can cause symptoms. It does not cure lactose intolerance; it helps only with the milk taken alongside it.
Dosage and Administration
Use as directed on the label. Infant drops are usually added to expressed breast milk or prepared formula and left for a short time before feeding, as the pack explains. Tablets or capsules for adults are usually taken with the first bite or sip of a dairy-containing meal. The amount needed depends on how much dairy is eaten and how sensitive the person is.
Interactions
No significant interactions with other medicines are known. Do not add drops to very hot milk, as heat destroys the enzyme.
Contraindications
- Allergy to lactase or any ingredient of the product (some are made from yeast or fungal sources).
- Galactosaemia, a rare inherited condition in which galactose cannot be handled; lactase does not help and milk must be avoided.
Side Effects
Lactase is generally very well tolerated. Mild stomach upset is uncommon. Allergic reactions are rare.
Get urgent medical help if a baby or adult develops a rash with swelling, difficulty breathing, blood in the stool, poor feeding, persistent vomiting or signs of dehydration, as these may point to another problem such as milk protein allergy.
Pregnancy and Lactation
Lactase acts inside the gut and is not absorbed, so it is considered safe during pregnancy and breastfeeding.
Precautions and Warnings
- Babies with crying or colic should be checked by a doctor to rule out other causes.
- Lactase does not help cow milk protein allergy, which is a different condition.
- People with diabetes should note that broken-down lactose gives glucose and galactose, which may slightly change the sugar effect of milk.
Overdose
Taking more than directed is unlikely to be harmful. Contact a doctor if unusual symptoms appear.
Therapeutic Class
Digestive enzyme supplement.
Storage
Store below 30°C in a dry place, away from light and out of the reach of children. Some drops need to be kept in the fridge after opening; follow the label.
Prepared by the Oshud Alo team from standard drug references. For information only; always follow your doctor's advice.