Digestive enzymes

Also called Digestive enzyme supplement, Multi-enzyme complex, Protease, amylase and lipase blend, DigeZyme, Plant-based digestive enzymes.

Best grade C across 5 graded outcomes Other Last checked

The short answer

From 10 sources

Over-the-counter digestive enzyme blends have two small placebo-controlled trials in functional dyspepsia, both reporting better symptom scores over about 2 months. In single-meal trials, protease blends raised early blood amino acids from protein drinks, but a six-enzyme blend did not raise total amino acids after a meal. Prescription pancreatic enzymes are pork-derived drugs. Amylase blends can blunt acarbose.

Every graded outcome on this page

5 rows · line = participants
  1. Grade CFunctional dyspepsia symptoms and quality of lifeIndigestionn 120
  2. Grade CFunctional dyspepsia symptomsIndigestionn 40
  3. Grade DNutrient levels in blood after a mixed mealDigestionn 30
  4. Grade DBlood amino acids after a pea protein drinkProtein absorptionn 24
  5. Grade DBlood amino acids and fullness after a whey protein drinkProtein absorptionn 24
  6. 2 more graded outcomes, in the evidence chapter

Key facts

Indigestion trials
Two RCTs in functional dyspepsia (120 and 40 adults) reported improved symptom and quality-of-life scores vs placebo over 2 months12
Protein absorption
A six-enzyme blend did not change total plasma amino acids after a meal (leucine peaked faster, 121 vs 141 minutes); a protease blend raised early amino-acid levels from pea or whey protein in two 24-person trials3910
Prescription vs OTC
Prescription pancrelipase (e.g. Creon, approved 2009) is extracted from pig pancreas; FDA required pancreatic enzyme drugs to hold an approved application by April 28, 2010. OTC plant and microbial blends are less studied467
Drug interaction
The acarbose label says amylase- or pancreatin-containing enzyme products may reduce its effect and should not be taken with it5

What it is

Digestive enzyme supplements are blends of proteases, amylases, lipases and other enzymes, usually from fungi or plants, taken with meals.

How it works

Established

Established in principle: supplemental proteases, amylases and lipases break down protein, starch and fat in the gut, the same job as pancreatic enzymes. Whether extra enzymes help people with normal pancreatic function is the open question.43

Forms, side by side

2 forms named in our sources. The rest show what our data holds, and say plainly where it holds nothing yet.

Digestive enzymes forms compared

2 forms
Digestive enzymes forms compared: 2 forms by 3 attributes. Empty cells are labelled No data yet, or Not graded in the evidence row.
2 formsFungal or plant-derived multi-enzyme blendsPancreatic enzymes (pancreatin; prescription pancrelipase)
Absorption in peopleAct in the gut lumen; not meant to be absorbed. A blend shifted post-meal leucine and glucose timing.3Animal-derived enzymes are the established standard for enzyme replacement.4
GI toleranceNo product-related adverse events in the two dyspepsia RCTs.12Not covered by the cited supplement trials.4
Studied forIndigestion, meal digestionPancreatic insufficiency (prescription)
  1. Fungal or plant-derived multi-enzyme blends
    Absorption in people
    Act in the gut lumen; not meant to be absorbed. A blend shifted post-meal leucine and glucose timing.3
    GI tolerance
    No product-related adverse events in the two dyspepsia RCTs.12
    Studied for
    Indigestion, meal digestion
  2. Pancreatic enzymes (pancreatin; prescription pancrelipase)
    Absorption in people
    Animal-derived enzymes are the established standard for enzyme replacement.4
    GI tolerance
    Not covered by the cited supplement trials.4
    Studied for
    Pancreatic insufficiency (prescription)
Every cell holds data from a cited page; citation numbers link to the page that holds them.Scroll the table for every column

What the human research says

Human trials only, one row per outcome. The form line shows what each trial actually tested. Grades follow our evidence-grading policy.

Trial map

5 graded outcomes, largest study first

5 graded outcomes: 3 improved, 2 mixed. The largest, a 2023 randomized trial of 120 people on functional dyspepsia symptoms and quality of life, found an improvement.

Bar: the ages a study enrolled (running to the edge when it states no upper or lower limit). Dot: only a mean age, counted as near your age within 5 years. Tick: the mean age inside a range.

1Functional dyspepsia symptoms and quality of life: improved, 18–59

4Blood amino acids and fullness after a whey protein drink: mixed, mean age 25

5Blood amino acids after a pea protein drink: improved, mean age 27

3Nutrient levels in blood after a mixed meal: mixed, mean age 56

2Functional dyspepsia symptoms: improved, ages not stated

1. Functional dyspepsia symptoms and quality of life: improved, 120 people12. Functional dyspepsia symptoms: improved, 40 people25. Blood amino acids after a pea protein drink: improved, 24 people5
3. Nutrient levels in blood after a mixed meal: mixed, 30 people34. Blood amino acids and fullness after a whey protein drink: mixed, 24 people4

1Functional dyspepsia symptoms and quality of life

Improved · Grade C · RCT, 120 people, 2023

Adults aged 18-59 with functional dyspepsia

Dose, result and source
Every graded outcome on this page, largest study first
OutcomeFoundPeopleStudyWho was studied
Functional dyspepsia symptoms and quality of lifeImproved120Grade C · RCT, 2023Adults aged 18-59 with functional dyspepsia
Functional dyspepsia symptomsImproved40Grade C · RCT, 2018Adults with functional dyspepsia
Nutrient levels in blood after a mixed mealMixed30Grade D · Crossover RCT, 2026Middle-aged and older US adults (mean age 56)
Blood amino acids and fullness after a whey protein drinkMixed24Grade D · Crossover RCT, 2025Healthy young adults (12 men, 12 women; mean age 25)
Blood amino acids after a pea protein drinkImproved24Grade D · Crossover RCT, 2024Healthy adults (12 women, 12 men; mean age 27)
Each circle is one graded outcome on this page, numbered from the largest study down, and placed by how many people it studied (log scale). By age shows the ages each study enrolled, where it states them. It shows who was studied and what was found, not advice about your dose.

Every graded row

5 rows

Showing 5 of 5 outcomes. Human trials only.

Grade CFunctional dyspepsia symptoms and quality of lifeIndigestionBetter symptom scoresRCT
n 120 · 2023

Improved Nepean Dyspepsia Index scores, pain severity (VAS) and sleep quality (PSQI) improved vs placebo, without side effects.

Design
RCT, n = 120, 2023
Population
Adults aged 18-59 with functional dyspepsia
Form
Multi-enzyme blend from fungal fermentation vs placebo
Dose
2 capsules a day (200 mg blend each)
Duration
2 months
Source
Reference 1 · PubMed 37976892 (opens PubMed)
Grade CFunctional dyspepsia symptomsIndigestionBetter symptom scoresRCT
n 40 · 2018

Improved All efficacy scales (Leeds, Nepean, VAS, CGI-S, Glasgow) improved more than placebo (P .0401 to .0033); no product-related adverse events or lab changes.

Design
RCT, n = 40, 2018
Population
Adults with functional dyspepsia
Form
DigeZyme multi-enzyme complex vs placebo
Dose
50 mg three times a day
Duration
60 days
Source
Reference 2 · PubMed 30156436 (opens PubMed)
Grade DNutrient levels in blood after a mixed mealDigestionFaster leucine peak onlyCrossover RCT
n 30 · 2026

Mixed Plasma amino acids did not differ between treatments over 5 hours; leucine peaked faster (121 vs 141 min, P = 0.047), and glucose and free fatty acids were higher with enzymes.

Design
Crossover RCT, n = 30, 2026
Population
Middle-aged and older US adults (mean age 56)
Form
Six-enzyme blend (proteases, lipase, amylase, glucoamylase) vs placebo with a 435 kcal meal
Dose
One dose with the meal
Duration
Single test sessions
Source
Reference 3 · PubMed 41662956 (opens PubMed)
Grade DBlood amino acids after a pea protein drinkProtein absorptionHigher total amino acids over 5 hCrossover RCT
n 24 · 2024

Improved Total plasma amino acids were higher over 0–5 hours with the protease (P = 0.010), and early (0–2 hour) exposure to leucine, branched-chain, essential and total amino acids was higher; leucine and branched-chain amino acids over the full 5 hours did not differ. Glucose was higher with the protease; insulin did not differ.

Design
Crossover RCT, n = 24, 2024
Population
Healthy adults (12 women, 12 men; mean age 27)
Form
Mixture of 3 microbial protease preparations (P3) vs maltodextrin placebo, with 25 g pea protein isolate
Dose
One dose with the protein drink (protease amount not given in the abstract)
Duration
Single test sessions (5 hours of blood sampling)
Source
Reference 9 · PubMed 38467279 (opens PubMed)
Grade DBlood amino acids and fullness after a whey protein drinkProtein absorption+14% essential amino acids (60 min)Crossover RCT
n 24 · 2025

Mixed The 60-minute area under the curve was 14% higher for essential and 15% higher for branched-chain amino acids; total amino acids and leucine did not differ. Ghrelin was 12% lower and fullness higher; glucose, insulin and energy intake at a later meal did not differ.

Design
Crossover RCT, n = 24, 2025
Population
Healthy young adults (12 men, 12 women; mean age 25)
Form
P3 microbial protease mixture vs maltodextrin placebo, in whey protein concentrate (25 g protein)
Dose
One serving with the whey drink (the abstract reports 50,000 HUT protease activity per 31.9 g serving in its lab test)
Duration
Single test sessions (240 minutes)
Source
Reference 10 · PubMed 40675336 (opens PubMed)

What the numbers add up to

Each point is worked out from the data and the sources numbered on this page, with the arithmetic shown under it. It adds no new data and is not medical advice.

Maker-run and small

Of the two dyspepsia trials, the DigeZyme study was run entirely by its manufacturer; the meal study was funded by its supplier. Together they total 190 people.123

How we got this: Conflict statements and participant counts of the three cited trials

Studied doses

Doses used in research, shown against the official limits. They describe the studies, not a recommendation for you.

Studied doses in research, not advice. These are amounts used in research, not personal advice. Your clinician or pharmacist can say what fits you.

Doses studied in human trials

Doses studied in human trials ranged from 50 mg of DigeZyme three times a day (150 mg) to 400 mg a day of a fungal blend for about 2 months, plus single doses with a test meal or with a pea or whey protein drink (protease blends dosed by activity units).123910

Interactions and safety

Published interactions only: each row cites a source. No row means none was found in our sources, not that a combination is safe.

What Digestive enzymes meets

1 cited row

Medicines 1

Digestive enzymes1 medicine · 0 supplements

Supplements and foods 0

No supplement rows in our sources.

  • Drug label or FDA notice
Rows as our evidence profiles cite them; links stay on this site. Line weight shows what backs a row, not how serious an interaction is. No line means none was found in our sources, not that a combination is safe. Not medical advice: ask your pharmacist.

Interactions

1 agent
Published interactions, grouped by kind
AgentWhat the source saysEvidence
Medicines1
Acarbosee.g. PrecoseDigestive enzyme preparations containing carbohydrate-splitting enzymes (amylase, pancreatin) may reduce acarbose's effect and should not be taken at the same time.5Drug label

Check with what you take

Kept on this device only

Add what you take. We list every interaction our evidence profiles cite between Digestive enzymes and your picks, and between your picks.

Most cited:

Add a supplement or medicine you take to check it against Digestive enzymes.

Starting from one medicine? The interaction checker rates how serious each pair is, on a curated list of 19 entries for 11 medicines. This cabinet has no severity rating: it lists every interaction row our supplement pages cite.

Not medical advice, and no dosing advice. An empty result means no row we cite names that pair, by name or through a drug class we can link the medicine to, not that a combination is safe. Where our sources name only a group of medicines we cannot match, the cabinet says so. Ask your pharmacist before you combine supplements and medicines.

Who should be careful

5 groups
Acarbose users
The acarbose prescribing information says amylase- or pancreatin-containing enzyme products may reduce the drug's effect and should not be taken concomitantly.5
Diagnosed enzyme deficiency
For exocrine pancreatic insufficiency (for example cystic fibrosis or chronic pancreatitis), prescription pancrelipase is the FDA-approved treatment and products are not interchangeable; OTC supplement blends are not a substitute.467
Pregnancy and breastfeeding
No trial of over-the-counter enzyme blends included pregnant or breastfeeding women. For prescription pancrelipase, the Creon label says case reports have not identified a drug-associated risk in pregnancy and that the enzymes are minimally absorbed, and LactMed cites expert opinion that pancrelipase is acceptable during breastfeeding because it is not appreciably absorbed.68
High-dose pancreatic enzymes
Fibrosing colonopathy, a rare and serious scarring of the colon, has been reported with high doses of pancreatic enzyme products over long periods, mostly in children with cystic fibrosis. The Creon label says not to exceed 2,500 lipase units/kg per meal or 10,000 lipase units/kg per day without further investigation.6
Pork avoidance or pork allergy
Pancrelipase is an extract of pig pancreas. Its label warns of reactions in people allergic to pork proteins and a theoretical risk of porcine virus transmission (never reported). The 120-person dyspepsia trial used a fungal blend instead.61
Talk to your pharmacist or clinician before starting a supplement, especially if you take prescription medicines.

How to read the label

What to check on the Supplement Facts panel.

How to read the label

3 checks
Look for activity units

Enzyme strength is the activity per dose, not milligrams; the trials named specific blends (DigeZyme, a fungal blend), so other products may differ.124

Amylase on the label

If you take acarbose, check for amylase or pancreatin, which the drug label says to avoid at the same time.5

Pancrelipase means pork

Pancrelipase is derived from pig pancreas; if you avoid pork for religious, dietary or allergy reasons, look for plant or fungal enzyme sources.6

Have the bottle? Photograph its Supplement Facts panel and see each line, digestive enzymes included, beside the doses and forms the trials used in Label X-Ray.

Where to buy Digestive enzymes

Products from brands we partner with that contain Digestive enzymes. Check the amount per serving against the doses studied above, and the label for other ingredients.

Digestive enzymes products from partner brands

1 product
  • Physician’s ChoicePhysician’s Choice Digestive Enzymes (60 capsules)

    1 capsule: 85 mg blend of 16 enzymes (including bromelain, amylase, proteases, papain, lactase, lipase and alpha-galactosidase), a 159 mg prebiotic and probiotic blend (inulin, acacia fiber, B. subtilis, B. coagulans, B. clausii) and 150 mg peppermint leaf and ginger root; the label gives blend weights, not enzyme activity units; 60 servings

    $23.72one-timeChecked Oct 20, 2026
    Shop at Physician’s Choice (paid link, opens in new tab)

Listing a product is not a claim that it works; check the amount per serving against the doses studied, and the label for other ingredients.Prices and labels are from each brand’s own site on the date shown; confirm before you buy.

Partner links may earn us a commission. How partner links work

Frequently asked questions

Short answers to common questions; the numbers link to the sources below.

Common questions

6 answers
Do digestive enzymes help with indigestion?

Two small placebo-controlled trials in functional dyspepsia reported better symptom scores over about 2 months: a 120-person trial of a fungal blend and a 40-person trial of DigeZyme run by its maker.12

Do enzymes help absorb more protein?

Slightly, and only in short tests. Two 24-person trials found a protease blend raised early blood amino acids from pea or whey protein drinks, while a six-enzyme blend did not change total amino acids after a mixed meal. All three trials involved the enzyme supplier BIO-CAT, and none measured muscle or strength.9103

What are the side effects of digestive enzymes?

The two dyspepsia trials reported no product-related adverse events. Prescription pancreatic enzymes carry label warnings: rare bowel scarring (fibrosing colonopathy) at high doses, mostly in children with cystic fibrosis, and hypersensitivity reactions in people who react to pork proteins.126

Do they interact with medicines?

Yes, at least one. The acarbose label says enzyme products containing amylase or pancreatin may reduce its effect and should not be taken with it.5

Are they the same as prescription pancreatic enzymes?

No. Prescription pancrelipase is an FDA-approved, pig-derived drug for enzyme deficiency, dosed by lipase units and monitored for rare high-dose bowel scarring. Over-the-counter plant and fungal blends are less studied and not interchangeable.467

Are digestive enzymes made from pork?

Some are. Pancrelipase, the prescription enzyme, is extracted from pig pancreas; the blend in the largest dyspepsia trial was made by fungal fermentation instead.61

Sources

10 sources: trial abstracts, NIH fact sheets and reference databases. Numbers in the text link here.

Sources cited on this page

10 sources
  1. 1Efficacy of digestive enzyme supplementation in functional dyspepsia: A monocentric, randomized, double-blind, placebo-controlled, clinical trial.RCT Biomed Pharmacother, 2023 · PMID 37976892
  2. 2Evaluation of the Safety and Efficacy of a Multienzyme Complex in Patients with Functional Dyspepsia: A Randomized, Double-Blind, Placebo-Controlled Study.RCT J Med Food, 2018 · PMID 30156436
  3. 3Oral Multienzyme Supplementation Alters Postprandial Plasma Nutrient Concentrations after a Mixed Meal in Healthy Middle-Aged and Older Adults: A Randomized, Double-Blind, Placebo-Controlled, Crossover Trial.Crossover RCT J Nutr, 2026 · PMID 41662956
  4. 4Digestive Enzyme Supplementation in Gastrointestinal Diseases.Review Curr Drug Metab, 2016 · PMID 26806042
  5. 5PRECOSE (acarbose tablets) prescribing information (DailyMed, updated May 29, 2014)Label DailyMed, U.S. National Library of Medicine, 2014 · dailymed.nlm.nih.gov
  6. 6CREON (pancrelipase) delayed-release capsules prescribing information (revised February 2024)Label U.S. Food and Drug Administration (Drugs@FDA), 2024 · accessdata.fda.gov
  7. 7Summary review, NDA 022523 (pancreatic enzyme product), 2010Guideline U.S. Food and Drug Administration, Center for Drug Evaluation and Research, 2010 · accessdata.fda.gov
  8. 8PancrelipaseDatabase LactMed (NCBI Bookshelf), 2024 · ncbi.nlm.nih.gov
  9. 9Acute Microbial Protease Supplementation Increases Net Postprandial Plasma Amino Acid Concentrations After Pea Protein Ingestion in Healthy Adults: A Randomized, Double-Blind, Placebo-Controlled Trial.Crossover RCT J Nutr, 2024 · PMID 38467279
  10. 10Acute Effects of Oral Microbial Protease Co-ingestion with Whey Protein on Postprandial Plasma Amino Acid Concentrations, Appetite, and Satiety in Healthy Adults: A Randomized, Double-Blind, Placebo-Controlled, Crossover Clinical Trial.Crossover RCT J Nutr, 2025 · PMID 40675336

What changed

Every dated change to this page: what changed, who made it and why.

Change log

4 entries
Dated changes to this page
DateChangeWho and why
evidence, safety, FAQAdded two graded protein-absorption rows (2024 pea protein and 2025 whey protein crossover trials of a microbial protease blend, 24 people each; supplier ties disclosed), a pregnancy and breastfeeding note (Creon label section 8.1 and LactMed's pancrelipase entry), an FAQ on side effects, an updated protein FAQ and key fact, hand-written questions, and links to betaine HCl and the gut goal hub. Summary updated. Checked: LiverTox has no digestive enzyme chapter (only a bromelain entry, covered on its own page); the Creon label says CYP- or transporter-mediated interactions are not expected, so acarbose stays the only interaction. PubMed (meta-analysis, systematic review, RCT, 2015–2026) found no meta-analysis of OTC enzyme blends.Writer: Kymata Health EditorialTrigger: A–Z audit against docs/supplements/AUDIT-STANDARD.md
where to buyAdded a digestive enzyme blend with its label amounts and the one-time price on the brand’s own page; it is listed as a blend (enzymes, probiotics and herbs).Writer: Kymata Health EditorialTrigger: product listing added
allInitial editorial evidence review. Every PMID checked against NCBI E-utilities esummary (title, year, journal) and each cited abstract read; numbers taken from the abstracts. Funding disclosed per study: Sami/Sabinsa authors (2018), BIO-CAT funding (2026), none declared (2023). The interaction row uses the Precose (acarbose) label on DailyMed. Lactase and alpha-galactosidase have their own pages. No product listed in this pass.Writer: Kymata Health EditorialTrigger: new page
who should avoidSafety review: added Rx pancrelipase regulation (Creon label; FDA NDA review on the April 28, 2010 approval deadline), fibrosing colonopathy and label dose ceilings, porcine sourcing, pork-allergy and viral-transmission warnings.Writer: Kymata Health EditorialTrigger: safety review

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