What digestive enzyme supplements actually do — and where the evidence stops.
Enzyax is a new, independent reference site on digestive enzymes: lactase, alpha-galactosidase, protease, lipase, and multi-enzyme blends. We separate what's well-supported (lactose intolerance, for instance) from what's marketed but thin on evidence — and we're upfront when a symptom needs a doctor, not a supplement.
Start with the evidence
Enzyax prioritizes documented use cases and complete, source-cited guides over a large catalog of shallow pages. Each guide below states plainly what's well-supported, what's plausible but thin on evidence, and what's outside the scope of an over-the-counter product entirely — see our editorial policy for how we make those calls.
Where to start
Digestive enzymes: the basics
What digestive enzymes are, which ones exist naturally in the body, and where over-the-counter supplements fit (and don't).
Read the overview →Lactase and lactose intolerance
The single clearest evidence-based use case for a digestive enzyme supplement. What lactase does, who it helps, and what the research says.
Read the guide →Alpha-galactosidase for gas and bloating
The enzyme in products like Beano. The trial evidence is genuinely mixed — we cover the positive and the null results side by side.
Read the guide →Protease and protein digestion
Do people on high-protein diets need extra protease? What the body already produces, and where the supplement claim gets thin.
Read the guide →Digestive enzymes for IBS and bloating
The most-searched use case, and the one where marketing runs furthest ahead of evidence. An honest, cautious summary.
Read the guide →Exocrine pancreatic insufficiency (EPI)
Why this is a medical diagnosis and prescription-treatment territory, not an over-the-counter supplement question — explained plainly.
Read the guide →Enzyme activity units, explained
What FCC units, ALU, and GalU actually measure, and why two labels with the same milligram count can have very different real activity.
Read the guide →How to choose a digestive enzyme supplement
A framework for evaluating any product yourself — enzyme-to-substrate match, activity per dose, source, allergens, and when to see a doctor instead.
Read the guide →What we won't do
We won't market digestive enzymes as a fix for exocrine pancreatic insufficiency (EPI) — that's a medical diagnosis requiring prescription pancreatic enzyme replacement therapy (PERT), not an over-the-counter product. If your symptoms sound like EPI, the right first step is a doctor, not a supplement page.
We also won't publish "best supplement for [symptom]" pages that outrun the evidence. Where research is limited (general bloating, high-protein diets, broad multi-enzyme blends), we'll say so plainly instead of implying more certainty than exists.