Lactase is the reason some people can demolish a cheese board and feel great while others regret a single latte. It's an enzyme — a tiny protein machine — with one job: breaking down lactose, the natural sugar in milk and dairy.
If dairy and you have a complicated relationship, understanding lactase is the first step to uncomplicating it. Here's the friendly version.
Lactose first: the sugar in your dairy
Lactose is a sugar found naturally in milk and everything made from it — cheese, ice cream, yogurt, butter, cream. It's a "disaccharide," which is a fancy way of saying it's two simpler sugars (glucose and galactose) stuck together.
Here's the catch: your small intestine can't absorb a disaccharide as-is. It has to be split apart first. That's lactase's job.
Lactase: the splitter
Lactase is an enzyme your body produces in the lining of the small intestine. When lactose from your food arrives, lactase breaks it into glucose and galactose — two simple sugars your body absorbs easily. No drama, no discomfort. Just digestion doing its thing.
When you have plenty of lactase, dairy is a non-event. You eat the pizza, drink the milkshake, move on with your life. When you don't have enough — which is extremely common in adults — undigested lactose keeps traveling through your gut, and that's when the bloating, gas, and stomach discomfort show up a few hours later.
Why do some people make less lactase?
Here's a fun fact: almost all babies produce plenty of lactase. It's how they digest breast milk. But for most of the world's adult population, lactase production naturally declines after childhood — a completely normal trait called lactase non-persistence.
In other words: if dairy started bothering you in your teens, twenties, or later, nothing is "wrong" with you. Your body just dialed back an enzyme it no longer makes in the same quantity. It's one of the most common digestive quirks on the planet.
So what does a lactase supplement do?
A lactase supplement is simply the same enzyme, delivered in tablet form. You take it right before eating dairy, and it goes to work in your digestive tract — breaking down lactose from your food so your body doesn't have to do it alone.
Think of it as backup for your gut. Your body brings what it can; the tablet covers the rest. The result: you eat the dairy you actually want, and your stomach stays out of the conversation.
DAIRE Lactase Enzyme Tablets deliver 9,000 FCC units of lactase per tablet — maximum strength. That's about three times the enzyme activity of original-strength national-brand pills, in a tablet that's vegan, non-GMO, gluten-free, and has no added sugar.
Lactase vs. lactose: don't mix them up
Quick cheat sheet, because the two words look almost identical:
- Lactose = the sugar in dairy. The thing that causes trouble.
- Lactase = the enzyme that breaks down lactose. The thing that solves it.
Lactose is the problem; lactase is the backup.
The food-positive takeaway
Here's what we believe: nobody should have to give up foods they love because of an enzyme shortage. Dairy is one of life's great pleasures — the pizza pulls, the ice cream cones, the extra cheese. Lactase exists so you can say yes to all of it.
One tablet. Real food. No dairy regrets.
Frequently asked questions
What is lactase in simple terms?
Lactase is a digestive enzyme that breaks down lactose (milk sugar) into simpler sugars your body can absorb. Your small intestine makes it naturally; lactase supplements provide extra enzyme activity when you eat dairy.
Where does lactase come from in the body?
Your body produces lactase in the lining of the small intestine. Production is high in infancy and often declines in adulthood — a normal, common trait.
What happens if you don't have enough lactase?
Undigested lactose continues through your digestive tract instead of being broken down and absorbed, which can lead to bloating, gas, and stomach discomfort after eating dairy.
Is lactase the same as lactose?
No — they're opposites in a way. Lactose is the milk sugar that causes discomfort; lactase is the enzyme that digests it. Easy mnemonic: lactase is the answer.
Do lactase supplements actually work?
Lactase supplements deliver the enzyme directly to your digestive tract, where it breaks down lactose from the food you just ate. Timing matters — take it before your first bite of dairy.
Is lactase vegan?
It depends on the product. DAIRE Lactase Enzyme Tablets are vegan, non-GMO, gluten-free, and made in the USA with no added sugar.
Meet your dairy backup: DAIRE Lactase Enzyme Tablets — 9,000 FCC maximum strength, 60 tablets for $9.95. Eat dairy. Skip the consequences.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.