Health Guide
Drug Guide


What is it?

Lactase is an enzyme that is found in the small intestines that digests lactose (milk sugar). It is used as a supplement for people who have problems digesting milk. Lactase has also been used in diarrhea, indigestion, irritable bowel syndrome, and migraine headaches.

Other names for Lactase include: no other names have been found.

Ask your doctor, nurse, or pharmacist if you need more information about this medicine or if any information in this leaflet concerns you.

Before Using:

Tell your doctor if you


Talk with your caregiver about how much Lactase you should take. The amount depends on the strength of the medicine and the reason you are taking Lactase. If you are using this medicine without instructions from your caregiver, follow the directions on the medicine bottle. Do not take more medicine or take it more often than the directions tell you to.

To store this medicine:

Keep all medicine locked up and away from children. Store medicine away from heat and direct light. Do not store your medicine in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down and not work the way it should work. Throw away medicine that is out of date or that you do not need. Never share your medicine with others.


Side Effects:

Stop taking your medicine right away and talk to your doctor if you have any of the following side effects. Your medicine may be causing these symptoms which may mean you are allergic to it.

Other Side Effects:

This medicine may also cause other side effects. Tell your doctor if you have side effects that you think are caused by this medicine.


1. Lininger S (ed): The Natural Pharmacy. Prima Health Publishing, Rocklin, CA; 1998.

2. Montes RG, Perman JA: Lactose intolerance (review). Postgrad Med 1991;89:175-184.

Last Updated: 9/15/2016

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