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Lactase: uses, side effects & brands
Lactase helps people with lactose intolerance digest dairy. It belongs to the Digestive enzyme group. These replace enzymes to help digest food when the body lacks them.
Drug type — dosing is set by your doctor
| Measure | Range |
|---|---|
| Drug class | Digestive enzyme |
| Type | Prescription |
| Dose | Individual — ask your doctor or pharmacist |
What it is used for
- Lactose intolerance
- Helping digest milk and dairy foods
- Reducing bloating, wind and diarrhoea after dairy
Common brand names
- India: Lactase drops, Aptamil (dietary)
- Worldwide: Lactaid
Common side effects
- Generally well tolerated
- Mild stomach discomfort (rare)
- Allergic reactions (rare)
Before taking it — precautions
- Take just before or with dairy foods
- Tell your doctor if dairy symptoms are severe or new (could be another condition)
- Not helpful for milk protein allergy
When to see a doctor urgently
- Swelling, hives or breathing difficulty after dairy (milk allergy) (urgent)
- Blood in stools or weight loss
- Persistent diarrhoea despite lactase
Not a prescription — no dose shown. The right dose of lactase depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
Is lactose intolerance the same as milk allergy?
No. Intolerance is trouble digesting milk sugar; allergy is an immune reaction to milk protein and can be dangerous.
Can I add lactase drops to milk?
Yes, some products are drops added to milk to pre-digest the lactose.
Does curd or yogurt need lactase?
Many people tolerate curd and aged cheese better because the lactose is partly broken down.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.