Digestive Enzymes: A Clinical Guide for Providers

Written by Empire Medical Training Editorial Team

Medically reviewed by Faride Ramos, MD, FAAMFM, ABAARM Double Board-Certified in Internal & Functional Medicine

Updated June 2026 ·11 min read

Digestive enzymes are the molecular tools that break the food a patient eats into units small enough to cross the gut wall. As Dr. Faride Ramos frames it in Empire's functional gut health curriculum, eating is only half the job — the other half is absorbing, and that depends on the right enzymes being secreted in the right place at the right time. When that sequence falters, patients arrive with the familiar story: bloating, fullness, indigestion, and the sense that food is not sitting right.

This guide situates digestive enzymes within the broader picture of gut health and is written for clinicians who want an accurate, practical overview. It is clinical education, not medical advice, and nothing here is a treatment recommendation, protocol, or substitute for individualized clinical judgment.

What are digestive enzymes?

Digestion is a sequence, not a single event. Dr. Ramos teaches it as a series of phases: a cephalic response to food, then stomach acid and gastric enzymes, then enzymatic activity in the mouth and small intestine, then bile acids from the gallbladder, then the pancreatic enzyme contribution, and finally absorption across the colon. Enzymes do the chemical work at nearly every one of those stages, and where each enzyme is secreted matters as much as whether it exists.

Three core enzyme classes do most of the macronutrient work:

• Amylase — breaks down starches and other carbohydrates. It begins acting in the mouth via salivary amylase and continues in the small intestine via pancreatic amylase.
• Protease — breaks down proteins into peptides and amino acids. This work begins in the acidic stomach and is carried forward by a suite of pancreatic proteases such as trypsin and chymotrypsin.
• Lipase — breaks down dietary fats. Pancreatic lipase is the principal player, working alongside bile acids that emulsify fat so the enzyme can reach it.

Where they come from is the part clinicians most often need to keep straight:

• Salivary glands — release amylase to start carbohydrate digestion before food is even swallowed.
• Stomach — provides the acidic environment and pepsin (a protease) that begin protein breakdown. Adequate stomach acid is a prerequisite for this step, not an optional extra.
• Pancreas — the enzymatic engine of digestion, secreting a broad array including amylase, lipase, trypsin, chymotrypsin, elastase, carboxypeptidase, and phospholipase into the small intestine.
• Brush border of the small intestine — the epithelial surface produces enzymes that finish the job, most familiarly lactase, which splits lactose. When brush-border lactase is low, lactose passes undigested and ferments — the basis of lactose intolerance.

When digestion fails: enzyme insufficiency

Enzyme insufficiency simply means there is not enough functional enzyme activity to keep up with what the patient is eating. It can originate at any of the production sites above, and the clinical picture shifts depending on which one is failing.

Pancreatic exocrine insufficiency is the most clearly defined form. When the pancreas does not deliver enough enzyme — particularly lipase — fat is the first casualty, and patients describe stools that are oily, floating, or foul-smelling (steatorrhea), often with unexplained weight loss and signs of malabsorption. Dr. Ramos notes that pancreatic exocrine dysfunction is frequently secondary to chronic pancreatitis, diabetes, celiac disease, inflammatory bowel disease, cystic fibrosis, alcohol use, or gallstone disease, and that a meaningful fraction of patients with type 1 and type 2 diabetes show some degree of pancreatic enzyme insufficiency.

The objective way to gauge it is pancreatic elastase measured on a stool test, covered in depth in our guide to functional stool testing. Broadly, a normal result reflects normal pancreatic function, an intermediate result signals declining function where supplementation may be considered, and a markedly low result indicates more significant insufficiency. The exact cut-points and how to act on each band are taught in Empire's course rather than reproduced here, because the number only means something alongside the patient in front of you.

Low stomach acid is a different and often-missed driver. Aging reduces acid output, as do long-term acid-suppressing medications, and the result is impaired protein breakdown upstream of the pancreas entirely. Brush-border issues, such as low lactase, produce yet another pattern, where a single nutrient is poorly handled even though pancreatic enzymes are intact. The shared symptom language — bloating, fullness, gas, indigestion — is exactly why these mechanisms are so easy to confuse, and why testing matters before treating.

The stomach acid connection

One of the most useful clinical points Dr. Ramos makes is that maldigestion frequently begins in the stomach, not the pancreas. Insufficient stomach acid — hypochlorhydria — sets off a cascade: protein breakdown decreases, protein allergenicity can increase, and the absorption of critical nutrients such as calcium, iron, folate, and B vitamins falls. It can also permit overgrowth of microbes that healthy acid would normally keep in check.

The pH thresholds she teaches are worth knowing. A healthy fasting stomach sits below a pH of roughly three. When it drifts into the three-to-seven range, that is hypochlorhydria; when it climbs toward seven, that is achlorhydria, often seen in atrophic gastritis. Prevalence rises sharply with age — a notable share of elderly patients carry low acid — which is one reason "I feel worse after meals as I've gotten older" is such a common complaint.

The counterintuitive part for many clinicians: some patients with low acid actually report reflux-type symptoms, even though reflux is classically attributed to excess acid. The real problem is dysregulation of the gastric environment, not simply too much acid — a nuance explored further in our guide to acid reflux and GERD. Reaching for enzymes without considering the stomach-acid picture means treating a downstream symptom while leaving the upstream cause untouched.

When enzyme therapy is genuinely indicated

Honesty about evidence is essential here, because "digestive enzymes" cover a wide range from established prescription therapy to loosely justified supplement use.

At the well-supported end is documented pancreatic exocrine insufficiency. When elastase testing and the clinical picture confirm it, pancreatic enzyme replacement therapy is established, evidence-based care. Dr. Ramos is explicit that severe insufficiency does not respond to over-the-counter plant-based enzymes and requires a prescribed broad-spectrum pancreatic enzyme product. This is real medicine for a real deficiency.

The weaker end is general "digestive support" — enzyme supplements taken broadly by people without a defined deficiency. The evidence for routine use in that setting is thin, and the honest framing is that enzymes are a targeted tool, not a default supplement. Many patients reaching for enzymes or probiotics on their own, as Dr. Ramos points out, are really experiencing the early signal of a more specific problem that deserves a root-cause workup rather than a blanket product.

There are also middle-ground, mechanistically reasonable uses — supporting a patient with documented low stomach acid, or addressing a specific brush-border deficiency like lactase — that are clinically sensible when tied to an actual finding. The principle running through all of it is the same: let testing and the indication drive enzyme use, not the symptom alone.

Where enzymes fit in a gut-healing protocol

In functional medicine, enzymes are most coherent when placed inside a structured sequence rather than used in isolation. Dr. Ramos organizes gut restoration around the 5R framework — Remove, Replace, Repopulate, Repair, Rebalance — described in full in our gut healing protocol guide.

Digestive enzymes belong to the "Replace" step. After the Remove phase addresses triggers and any microbial overgrowth, Replace restores what the patient is missing to digest properly: assessing nutrient status, then replacing digestive enzymes and, where indicated, hydrochloric acid support, alongside attention to bile acids and motility. The conceptual logic is clean — there is little point repopulating beneficial bacteria or repairing the gut lining if food is still arriving in the gut poorly broken down. Replace sets the table for the steps that follow.

Because gut repair and intestinal-permeability concerns travel alongside this work, it is worth noting that some clinicians incorporate the gut-repair peptide BPC-157 into the Repair phase of these protocols. As with the rest of the 5R sequence, the specifics — which agents, in what order, for which patient — are exactly what Empire's course teaches; this page describes the reasoning, not a regimen.

Food and lifestyle support

Enzyme function does not exist in a vacuum, and the foundational interventions are dietary and behavioral. Dr. Ramos stresses that diet is the through-line of every phase of gut work, and several simple measures meaningfully support digestion before any supplement is considered:

• Smaller, more frequent meals reduce the digestive load at any one sitting — a practical step she recommends in pancreatic insufficiency.
• Reducing or eliminating alcohol, which stresses the pancreas, and smoking cessation are core lifestyle changes when enzyme capacity is compromised.
• Identifying food sensitivities and triggers — lactose being the classic brush-border example — so the diet stops outpacing the enzymes available. See our companion guide to the gut health diet.
• Mindful eating habits and stress reduction, because the cephalic phase of digestion and overall GI function are blunted by stress — a recurring theme across Dr. Ramos's 5R framework.

These steps are not glamorous, but they are where durable improvement usually starts. Enzyme support, when warranted, works best on top of a foundation that is already in order.

Training for providers

The clinical challenge with digestive enzymes is rarely the chemistry — it is judgment. Knowing whether a patient's bloating reflects pancreatic insufficiency, low stomach acid, a brush-border problem, or something that needs a gastroenterology referral is the difference between targeted care and trial-and-error supplementation. That judgment is built on physiology, testing literacy, and a framework for sequencing interventions.

Empire's curriculum is designed around exactly this reasoning. Developed and taught by Dr. Faride Ramos, MD — double board-certified in internal and functional medicine — it connects digestive physiology to the functional testing that confirms a diagnosis and to the 5R protocol that organizes treatment, so enzymes are used precisely rather than reflexively.