What is the recommended dosage for Lactase?

General: 3,000-9,000 FCC lactase units per dairy serving; Severe Intolerance: 9,000-12,000 FCC units per dairy serving; Moderate Intolerance: 6,000-9,000 FCC units immediately before dairy consumption

What are the side effects of Lactase?

Potential side effects include: Generally very well-tolerated with minimal side effects, Rare allergic reactions to fungal-derived enzyme (Aspergillus source), Mild abdominal discomfort in rare cases.

What is lactase and how does it work for gut health?

Lactase is a digestive enzyme that breaks down lactose, the sugar found in milk and dairy products, into glucose and galactose for absorption. People with lactose intolerance produce insufficient lactase naturally, leading to bloating, gas, cramping, and diarrhea when consuming dairy. Supplemental lactase taken with dairy-containing meals may help prevent these symptoms by providing the enzyme the body lacks.

What is the recommended dosage of lactase?

Lactase supplements are typically dosed at 3,000-9,000 FCC (Food Chemical Codex) units per serving, taken with the first bite or sip of dairy. The required dose depends on the amount of lactose consumed and individual sensitivity levels. Some individuals may need to take additional doses with larger dairy servings or extended meals.

Are there side effects or interactions with lactase?

Lactase supplements are considered very safe with no significant side effects or drug interactions. They work locally in the digestive tract and are not systemically absorbed. Individuals with galactosemia should avoid lactase supplements, as the enzyme produces galactose from lactose breakdown. Lactase does not address dairy allergies, which involve immune responses to milk proteins rather than lactose sugar.

Lactase
Lactase

digestive_enzyme

別名: Beta-Galactosidase, Lactaid, Lac-Dose, Dairy Ease

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About

Lactase is a beta-galactosidase enzyme that breaks down lactose (milk sugar) into glucose and galactose in the small intestine. For individuals with lactase deficiency, taking supplemental lactase before consuming dairy may help prevent undigested lactose from reaching the colon, where bacterial fermentation causes gas, bloating, and diarrhea. Research suggests exogenous lactase may reduce lactose intolerance symptoms by 70-80%.

How It Works

Beta-galactosidase enzyme that hydrolyzes lactose disaccharide into glucose and galactose monosaccharides in the small intestine, preventing undigested lactose from reaching the colon where bacterial fermentation produces gas (H2, CO2, CH4) and causes osmotic diarrhea.

Evidence For Conditions

症状・状態	グレード	研究数	参加者数
Lactose Intolerance	A	15	1200	詳細を見る →

Side Effects

Generally very well-tolerated with minimal side effects
Rare allergic reactions to fungal-derived enzyme (Aspergillus source)
Mild abdominal discomfort in rare cases

Drug & Supplement Interactions

No significant drug interactions known
Calcium supplements (lactase does not affect calcium absorption from dairy)

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Related Ingredients

Pancreatic Enzymes (Pancrelipase) Alpha-Galactosidase

基本情報

用量: General: 3,000-9,000 FCC lactase units per dairy serving; Severe_Intolerance: 9,000-12,000 FCC units per dairy serving; Moderate_Intolerance: 6,000-9,000 FCC units immediately before dairy consumption
剤形: tablet capsule drops (for adding to milk) chewable
天然の供給源: Produced endogenously in the small intestine (deficient in lactose-intolerant individuals), Derived from Aspergillus oryzae or Kluyveromyces lactis for supplements
上限量: No established upper limit; dosage adjusted per dairy serving
推奨摂取タイミング: Immediately before or with the first bite of dairy-containing food

エビデンスの要約

Lactose Intolerance A

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