Lactase is the enzyme in the small intestine that digests lactose (the naturally occurring sugar in milk). A few children and many people after childhood do not produce sufficient lactase, which impairs the body’s ability to digest milk. These individuals are lactose intolerant.

Diarrhea. Indigestion and heartburn. Irritable bowel syndrome. Lactose intolerance.

Indigestion of milk.

Lactase drops can be added to regular milk twenty-four hours before drinking to reduce lactose levels. Lactose-reduced milk is also available and can be used in the same quantities as regular milk. Lactase drops, capsules, and tablets can also be taken directly, as needed, immediately before a meal containing dairy products. The degree of lactose intolerance varies by individual, so a greater or lesser amount of lactase may be needed to eliminate symptoms of lactose intolerance.

Lactase is produced within the body. Dairy products have varying levels of lactose, which affects how much lactase is required for proper digestion. Milk, ice cream, and yogurt contain significant amounts of lactose, although for complex reasons yogurt often does not trigger symptoms in lactose-intolerant people.

Lactase does not produce side effects. Talk to your doctor about any side effect that seems unusual or which is especially bothersome.

Acute Overdose: None Chronic Overdose: None

Only one-third of all people retain the ability to digest lactose into adulthood. So be cautious about the use.