ImportantThis page is general information, not a prescription. Don't start, stop, or change a medicine without talking to your provider or pharmacist.
Overview
Lactose-free milk already contains it.
What it's used for
- Lactose intolerance
How to take it
- Take with the first bite or sip of dairy. Take more if you eat dairy over a long meal.
Your dose depends on your health and other medicines. Always follow your prescription label, and ask your pharmacist if anything is unclear.
Side effects
Common side effects
- Usually none
Call your provider todaySevere belly pain, blood in stool, or weight loss (not typical of lactose intolerance)
Warnings
- It doesn't help milk allergy.
Other medicines, foods, and alcohol
- None.
Tell your provider and pharmacist about every medicine, vitamin, and supplement you take.
Pregnancy and breastfeeding
Safe in pregnancy.
Missed doses, overdose, and storage
If you miss a dose
Not applicable: take with dairy.
If someone takes too much
Call Poison Control at 1-800-222-1222 or get help online at poison.org. Call 911 if the person collapses, has a seizure, has trouble breathing, or can't be woken.
Storing it
Store at room temperature, away from heat and moisture (not in the bathroom), and out of reach of children and pets.
Conditions it's used for
Sources
- DailyMed: FDA drug label for Lactase enzyme (U.S. National Library of Medicine)
- MedlinePlus: Drugs, herbs, and supplements
- FDA: Drugs@FDA
Last updated 2026-11-13.