Lactase is produced by the body and is the enzyme in the small intestine that digests lactose, the naturally occurring sugar in milk. Dairy products have varying levels of lactose, which affects how much lactase is required for proper digestion.

What it does

A deficiency of lactase affects the ability to digest milk and some diary products giving rise to side effects such as diarrhoea, bloating and abdominal pain.

Potential Uses (for people with lactose intolerance)

Lactose intolerance Lactase deficiency IBS
Indigestion Heartburn Diarrhoea


At the time of writing there were no well known negative drug interactions with lactase.

Generally, there are no side effects or contra-indications from using lactase.

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