Indigestión

Acid maltase (acid alpha-glucosidase) hydrolyzes glycogen within lysosomes as well as maltose in the gut, playing a role in carbohydrate digestion. Deficiency causes Pompe disease (glycogen storage disease type II). In the digestive enzyme supplement context, it is included in formulations to support glycogen and starch breakdown.

Acid protease (fungal acid protease) is active at gastric pH levels (pH 2.0–4.0), complementing the limited pH range of pancreatic proteases. It is included in broad-spectrum digestive enzyme supplements to ensure protein digestion across the full pH spectrum of the GI tract. Acid-stable fungal proteases have been studied for gluten hydrolysis.

Actinidin is a cysteine protease unique to kiwifruit with well-documented protein-digesting activity superior to pepsin for many food substrates. Multiple in vitro and animal studies confirm it enhances upper GI tract protein digestion across a range of meat, dairy, and plant proteins. It has been shown to enhance gastric protein digestion by up to 37–48% for casein fractions.

Ajwain has been shown in animal studies to increase pancreatic lipase and amylase activity, and to stimulate bile secretion. These effects support the traditional classification as a digestive stimulant. A human clinical trial in IBS patients showed significant improvement in digestive discomfort scores with ajwain extract.

Allspice volatile oils, particularly eugenol, stimulate digestive enzyme activity including trypsin. This enzymatic stimulation is documented in pharmacognostic references and supports allspice's classification as a digestive stimulant. The mechanism provides a scientific basis for its traditional use in dyspepsia and indigestion.

Alpha-galactosidase hydrolyzes alpha-galactosidic bonds in oligosaccharides such as raffinose and stachyose found in legumes, reducing gas, bloating, and flatulence. Clinical trials support its efficacy and it is highlighted by Johns Hopkins Medicine as a useful digestive enzyme. It is the active ingredient in Beano.

Amylase is a core pancreatic and salivary digestive enzyme that catalyzes the hydrolysis of starches and glycogen into sugars. It is a primary active ingredient in pancreatic enzyme replacement therapy (PERT), the FDA-regulated standard of care for pancreatic exocrine insufficiency. Clinical evidence consistently supports its role in carbohydrate digestion and reducing dyspeptic symptoms.

Artichoke (Cynara scolymus) has been shown to inhibit digestive enzymes including pancreatic lipase, alpha-amylase, and alpha-glucosidase in preclinical studies, and to stimulate bile production which is required for fat digestion. These effects on the enzymatic environment of digestion are supported by mechanism studies and indirectly by clinical dyspepsia trials.

Aspergillopepsin is an acid protease from Aspergillus niger that extensively hydrolyzes dietary gluten proteins at gastric pH, unlike mammalian pepsin. A PLOS ONE study showed it can degrade small amounts of dietary gluten in vitro when combined with DPPIV. It is studied as part of oral enzymatic therapies for gluten-related digestive concerns.

Aspergillus species (principally A. oryzae and A. niger) are primary industrial sources of supplemental digestive enzymes including protease, amylase, lipase, cellulase, and lactase. These fungal-derived enzymes are acid-stable, remaining active across the broad pH range of the gastrointestinal tract. Clinical trials confirm their effectiveness in improving macronutrient digestion in populations with enzyme insufficiency.

B. coagulans strains produce a range of digestive enzymes including proteases, lipases, and carbohydrate-metabolizing enzymes that facilitate nutrient digestion and absorption in the small intestine. This has been documented in mechanistic reviews and supported by the protein absorption RCT data with GBI-30, 6086.

Betel leaf contains diastase and phenolic essential oils that stimulate digestive enzyme activity. Rat studies have examined the effect of betel leaf on pancreatic and intestinal mucosal digestive enzymes and bile production, showing stimulatory effects.

Bile salts are functionally required for activation and optimal activity of bile salt-stimulated lipase (BSDL), a key pancreatic digestive enzyme. They protect sterol ester hydrolase from tryptic inactivation and create the micellar environment in which pancreatic lipase (with colipase) can efficiently hydrolyze triglycerides. In pancreatic exocrine insufficiency, co-administration of bile acids with pancreatin improves fat digestion in clinical trials.

Piperine stimulates pancreatic digestive enzyme secretion (amylase, lipase, proteases) and activates brush border membrane enzymes in the jejunum, enhancing nutrient breakdown and absorption. These effects have been documented in both animal studies and human pharmacological research, providing mechanistic backing for traditional use as a digestive stimulant.

Bovine pancreas is a recognized source of pancreatin—a mixture of amylase, lipase, and protease—used clinically to replace deficient pancreatic digestive enzymes. EPI, characterized by decreased synthesis or secretion of these enzymes, leads to maldigestion of fats, proteins, and carbohydrates. Multiple RCTs confirm that pancreatic enzyme preparations derived from animal pancreas, including bovine, correct fat and nitrogen malabsorption. Bovine preparations have been available clinically since the late 19th century.

Bromelain is a cysteine protease mixture extracted from pineapple stem and fruit with well-documented protein-digesting activity. It survives gastric transit and has been used in combination enzyme products for pancreatic steatorrhea and dyspepsia. Animal studies show it stimulates pancreatic trypsin activity and beneficially modulates gut microbiota.

Cellulase breaks down cellulose from plant cell walls, a substrate humans cannot endogenously digest. It is included in multi-enzyme digestive supplement formulations to enhance nutrient extraction from plant-based foods. A clinical study on a 5-enzyme blend including cellulase showed significant GI symptom reduction in functional dyspepsia patients.

Chicory root extracts contain bitter sesquiterpene lactones that traditionally and clinically stimulate digestive secretions, including bile production (choleretic action) and promotion of digestive enzyme activity. Clinical evidence focuses on liver enzyme normalization in NAFLD patients, where chicory supplementation significantly reduced elevated AST and ALT.

Chymopapain is a cysteine protease from papaya latex related to papain and is included in recognized lists of digestive enzymes used in pharmaceutical preparations. It digests proteins similarly to papain and is listed in authoritative patent literature alongside papain, bromelain, and pancreatin as a digestive protease.

Chymotrypsin is a serine protease produced by the pancreas that cleaves peptide bonds adjacent to aromatic amino acids. It is a documented component of pancreatic enzyme replacement preparations and is included in oral enzyme formulations for protein digestion support. Clinical trials confirm its digestive enzyme activity in multi-enzyme preparations.

Animal studies show cumin significantly stimulates pancreatic enzyme output (lipase, amylase, trypsin, chymotrypsin) and enhances small intestinal maltase activity. Bile acid output was increased by up to 70% in cumin-fed animals. Human studies have not directly measured enzyme output, but IBS clinical improvements and metabolic RCT data are consistent with enhanced digestive capacity.

DAO is itself a digestive enzyme produced by mature small intestinal enterocytes, and its activity level is a direct indicator of small intestinal mucosal health and enzyme-producing cell integrity. Conditions damaging the intestinal mucosa reduce DAO activity, and DAO measurement is used clinically to assess the functional state of digestive enzyme-producing cells.

DPPIV (dipeptidyl peptidase IV) from Aspergillus oryzae cleaves X-Pro N-terminal dipeptides and is specifically relevant for breaking down proline-rich gluten and casein peptides. In combination with aspergillopepsin, DPPIV was shown to successfully degrade dietary gluten in vitro. It is a standard ingredient in gluten-digest enzyme supplement formulations.

Exopeptidases are essential components of the digestive enzyme system, constituting the terminal stage of protein digestion alongside endopeptidases from the pancreas and stomach. Their activity level is directly measurable as a marker of digestive health, and clinical conditions characterized by enzyme deficiency—such as exocrine pancreatic insufficiency—routinely involve exopeptidase depletion. Supplementation with exogenous exopeptidases in deficiency states is supported by clinical evidence for improving nutritional outcomes.

Fenugreek's galactomannan fiber has been shown to slow gastric emptying and moderate intestinal sodium-dependent glucose uptake, demonstrating direct activity on digestive enzyme and transporter systems. Fenugreek also stimulates insulin secretion by altering metabolic enzyme activity, with documented effects on hepatic glycogen phosphorylase and intestinal brush border function.

Asafoetida has been shown to facilitate digestion by promoting the activities of digestive enzymes in the pancreas and small intestine and stimulating bile acid production. These effects are documented in preclinical studies and support its classification as a digestive aid in Ayurveda.

Ficin is a cysteine protease from fig tree (Ficus carica) latex related to papain and bromelain. It is included among recognized plant-derived proteases used in digestive enzyme formulations and digests a wide range of protein substrates. It is listed in authoritative pharmacopeial and patent literature as a digestive protease.

Fungal proteases derived from Aspergillus oryzae and related species are active across a broad pH range (3–9), making them effective throughout the GI tract. Clinical studies show fungal protease supplementation reduces duodenal gluten concentration in gluten-sensitive subjects and reduces GI symptoms in functional dyspepsia. A broad-spectrum clinical RCT confirmed significant dyspepsia symptom reduction.

Galactosidase (beta-galactosidase/lactase) hydrolyzes galactoside bonds in lactose and related glycosides. As lactase, it is the definitive treatment for lactose intolerance, with robust RCT evidence. Alpha-galactosidase addresses gas from oligosaccharides. Both forms are well-established digestive enzyme supplements.

Commission E and ESCOP recognize gentian root as a bitter digestive tonic that reflexively stimulates secretion of saliva, gastric acid, digestive enzymes (including in the small intestine), and bile. This mechanism is backed by bitter receptor pharmacology and WHO monograph documentation. In vitro studies also show gentian extracts inhibit α-amylase and α-glycosidase, indicating interaction with digestive enzyme activity.

Gentian root's bitter compounds reflexively stimulate secretion of digestive enzymes including pepsin in the stomach and enzymes in the small intestine, as documented in pharmacological studies and confirmed by ESCOP/Commission E. A PubMed study of Siberian gentian species confirmed stimulation of acid-, enzyme-, and mucin-forming functions of the stomach. The EMA notes that bitters stimulate nerve-mediated digestive secretion. This mechanism is the primary basis for formal regulatory approval.

Ginger has established prokinetic and digestive-stimulant effects supported by clinical trials. It accelerates gastric emptying, enhances gastrointestinal motility, reduces dyspepsia symptoms, and is proposed to stimulate bile and pancreatic enzyme secretion. A systematic review of clinical trials (PMC6341159) confirmed ginger as useful for multiple gastrointestinal symptoms.

Glucanase (beta-glucanase) hydrolyzes beta-glucan polysaccharides found in cereal grains such as oats and barley. It is included in digestive enzyme formulations for plant-based and grain-heavy diets to reduce viscous beta-glucan in the gut and improve nutrient absorption and GI comfort.

Glucoamylase (amyloglucosidase) cleaves glucose units from the non-reducing ends of starch and dextrins. It is produced in the small intestinal brush border and is included in broad-spectrum digestive enzyme formulations for carbohydrate digestion support. It complements amylase activity by completing starch hydrolysis to absorbable glucose.

Hemicellulase breaks down hemicellulose, a major component of plant cell walls including xylans and beta-glucans. It is included in digestive enzyme blends specifically designed for plant-based diets and is a component of the well-studied CereCalase formulation. It supports fiber digestion and nutrient availability from whole grains and vegetables.

Invertase (sucrase) hydrolyzes sucrose into glucose and fructose, supporting digestion of table sugar and sucrose-containing foods. It is a natural brush-border enzyme produced in the small intestine and is included in digestive enzyme supplements to address sucrose intolerance and support carbohydrate digestion. Deficiency causes congenital sucrase-isomaltase deficiency.

Lactase (beta-galactosidase) hydrolyzes lactose into glucose and galactose and is the established treatment for lactose intolerance. Oral lactase supplements consistently reduce symptoms of lactose maldigestion such as bloating, gas, and diarrhea in RCTs. It is recognized by Johns Hopkins Medicine and other major institutions as a well-supported digestive enzyme supplement.

Lipase is a core digestive enzyme catalyzing hydrolysis of triglycerides into fatty acids and glycerol. It is a principal component of FDA-regulated PERT for pancreatic exocrine insufficiency and is broadly used in digestive supplement formulations. Deficiency leads to steatorrhea and fat malabsorption.

Maltase is a brush-border enzyme of the small intestine that converts maltose into two glucose molecules, completing starch digestion. Supplemental maltase is included in multi-enzyme digestive formulas to ensure complete carbohydrate breakdown and prevent fermentation of undigested maltose by colonic bacteria.

Ox bile (bovine bile extract) emulsifies dietary fats, dramatically increasing the surface area available for lipase activity and enabling fat-soluble vitamin absorption. It is used therapeutically in individuals without a gallbladder or with bile acid deficiency. Digestive enzyme supplement formulations commonly include ox bile to support fat digestion.

Pancreatin is a multi-enzyme extract from animal (porcine or bovine) pancreas containing amylase, lipase, and protease. It is a clinical standard for supporting digestion and is used in pancreatic enzyme replacement therapy (PERT) for exocrine pancreatic insufficiency. Clinical evidence for its digestive efficacy is robust.

Papain is a cysteine protease from Carica papaya latex with centuries of traditional use as a digestive aid in tropical medicine. It digests a broad spectrum of proteins, stimulates pancreatic trypsin activity, and modulates gut microbiota in animal models. It appears in recognized formulations for protein digestion support.

Papaya is the commercial source of papain, a well-characterized cysteine endopeptidase complex that breaks down dietary proteins across a wide pH range. Papain supplementation has been clinically evaluated for improving digestive symptoms in IBS and gastritis patients. The EFSA Panel has evaluated papain as a food enzyme with established safety.

Carica papaya is the commercial and pharmacological source of papain, a well-characterised cysteine protease with broad digestive activity against proteins, and chymopapain with complementary specificity. Papain is clinically used and pharmacopoeially recognised as a digestive aid. Clinical studies confirm improvements in digestive symptoms when papain-rich preparations are administered.

Pectinase breaks down pectin, the structural polysaccharide found in the cell walls of fruits and vegetables. It is included in digestive enzyme formulations to enhance digestion of plant foods and reduce fermentable pectin that can cause gas and bloating. It is recognized as a component of comprehensive multi-enzyme digestive blends.

Human digestive enzymes cannot cleave the proline-rich bonds in gliadin and other proline-dense dietary proteins, resulting in incomplete digestion and accumulation of potentially bioactive peptides in the gut lumen. Oral PEP supplementation is designed to fill this functional gap, acting as an exogenous digestive enzyme targeting a specific substrate class that mammalian proteases cannot effectively process.

Pepsin is the primary gastric protease, activated by hydrochloric acid, that initiates protein digestion in the stomach. It is produced as pepsinogen by chief cells of the gastric mucosa and is included in animal-source digestive enzyme supplements. It is a recognized component of gastric digestive physiology and oral enzyme preparations.

Peptidases (including DPP-IV/DPPIV and other exopeptidases) cleave terminal amino acids from peptides, completing protein digestion to absorbable amino acids. DPPIV specifically cleaves proline-containing peptides relevant to gluten digestion. Multi-enzyme clinical studies consistently include peptidase as a component contributing to GI symptom reduction.

Phytase degrades phytic acid (phytate) in plant foods, releasing bound minerals such as calcium, iron, zinc, and phosphorus for absorption. Both animal and human trials indicate that phytase supplementation improves mineral bioavailability. It is included in digestive enzyme formulations targeted at plant-rich diets.

Bromelain is a clinically recognized digestive enzyme supplement that breaks down dietary proteins across both the acidic stomach environment and the alkaline small intestine. Clinical and mechanistic evidence supports its use for protein digestion, reduction of bloating, and support in pancreatic insufficiency.

S. boulardii CNCM I-745 synthesizes polyamines that upregulate intestinal brush-border digestive enzymes including lactase, sucrase-isomaltase, and trehalase, and also directly secretes certain enzymes. These trophic effects have been documented in a dedicated peer-reviewed review of non-clinical and clinical studies.

Serrapeptase (serratiopeptidase) is a zinc-dependent serine protease originally from Serratia bacteria in the silkworm gut. It is used in enteric-coated oral supplements primarily as a mucolytic and anti-inflammatory agent and has been included in clinical digestive enzyme preparations, though its primary role is proteolytic rather than macronutrient-specific digestion.

The fermentation process of shen-chu produces a clinically relevant spectrum of digestive enzymes including amylase, protease, lipase, cellulase, sucrase, and glucoamylase. Biochemical studies confirm these enzymes are produced during fermentation and are not present in the unfermented raw materials, directly supporting macronutrient breakdown.

Sucrase is one of the most abundant and functionally critical brush border digestive enzymes in the small intestine. Sucrase-isomaltase accounts for the final step of sucrose and branch-starch digestion; its deficiency—whether congenital or acquired—is the best-studied example of a clinically consequential digestive enzyme disorder. Sacrosidase is the only FDA-approved oral enzyme replacement therapy for a specific intestinal disaccharidase deficiency.

Trypsin is a key pancreatic serine protease that hydrolyzes proteins at lysine and arginine residues and is central to intestinal protein digestion. It is a component of pancreatin formulations and has been studied in clinical enzyme replacement therapy. It is listed in multiple authoritative pharmacopeial monographs as a core digestive protease.

Xylanase degrades xylan, a major hemicellulosic polysaccharide in cereal grain cell walls and plant foods. It is included in broad-spectrum digestive enzyme supplements to improve digestion of plant-based foods and reduce fermentable substrate. Clinical evidence supports its use as part of multi-enzyme formulations for digestive health.

Fresh alfalfa sprouts contain digestive enzymes, and the plant is traditionally described as a digestive tonic that increases peristaltic movements. Ayurvedic medicine uses it as a natural digestive aid. No human studies have examined alfalfa's effects on digestive enzyme activity.

Ananain is a cysteine protease found in pineapple (Ananas comosus) stem, related to but distinct from bromelain. It is recognized in the plant protease literature as a protein-digesting enzyme from the same source as bromelain and has been studied for digestive and food-processing applications.

Ripe banana contains amylase and other endogenous enzymes that contribute to self-digestion of starch during ripening and may support digestive processes when consumed. Traditional use of banana as an easily digestible, enzyme-rich food for gastric complaints and convalescence is well documented across multiple cultures.

Barberry's cholagogue action (stimulating bile secretion) and its use as a digestive tonic are well-documented traditionally. Bile is essential for lipid digestion and enzyme function in the small intestine. This use is supported by multiple traditional medicine systems and plausible pharmacological mechanisms.

Cardamom is traditionally used across Ayurvedic and South Asian medicine to stimulate digestive enzyme secretion and bile flow, improving overall digestive function. Traditional use describes it as a deepana (digestive stimulant). In vitro studies show cardamom aqueous extract inhibits pancreatic lipase and alpha-amylase, suggesting digestive enzyme modulation. Human trial data on this specific endpoint are lacking.

Dandelion root is documented across ESCOP, EMA, and German Commission E monographs as increasing bile flow (cholagogue/choleretic activity) and stimulating pancreatic enzyme secretion via bitter receptor activation. These effects support digestive enzyme activity in the upper GI tract. Human evidence specific to enzyme levels is absent.

Mango leaves are documented in Ayurvedic texts as stimulating the secretion of digestive enzymes and enhancing gut motility. Traditional use of mango to support digestion, relieve indigestion, and improve appetite is consistently documented across South Asian and tropical folk medicine.

Mustard seeds are documented as a digestive stimulant: the pungent volatile oils increase salivary and gastric juice secretion and stimulate digestive enzyme production by mildly irritating the gut mucosa. This property is recognized in Ayurvedic, European, and TCM traditions and is mechanistically plausible, though not confirmed in dedicated clinical enzyme assays.

Nattokinase is a serine protease produced by Bacillus subtilis natto during soybean fermentation, traditionally consumed in fermented natto as part of Japanese dietary culture. It is included in some multi-enzyme digestive supplement formulations as a proteolytic component, though its primary well-characterized role is fibrinolytic rather than macronutrient-specific digestion.

Orange peel compounds traditionally stimulate the production of digestive enzymes including gastric acid, bile, and pancreatic secretions. This bitter tonic action is documented across Chinese, Ayurvedic, and European herbal medicine and is consistent with the known pharmacology of bitter flavonoids and limonoids in orange peel.

Parsley is traditionally classified as a gastro-tonic, stimulating digestive enzyme secretion and enhancing gut motility through its volatile oil content. Apigenin and bitter compounds in parsley support bile flow and gastric secretions. Animal and in vitro evidence partially corroborates this.

Radish root contains digestive enzymes including diastase, amylase, myrosinase, and esterase, which are traditionally considered to support carbohydrate digestion and food breakdown. TCM formally lists radish seed for promoting digestion and relieving food stagnation. In vitro studies confirm alpha-amylase and alpha-glucosidase inhibitory activity of radish leaf extracts.

TCM describes Z. bungeanum as a stomachic and carminative that supports digestive function. Laboratory evidence suggests HAS stimulates gastric secretions and salivation. No human study on specific digestive enzyme activity has been performed.

Triphala is a primary 'deepana' (digestive enzyme stimulating) agent in Ayurveda, traditionally used to promote digestive enzyme secretion and food assimilation. Reviews confirm it promotes 'proper digestion and absorption of food.' Specific human studies measuring enzyme activity (amylase, lipase, protease) are lacking.

Yucca saponins are documented to enhance nutrient digestibility and gut function in multiple animal models, and Native American traditions used yucca juice as a digestive remedy and laxative. Saponins act as surfactants that may improve emulsification of dietary fats, aiding digestion. Oral use for stomach disorders is listed as a traditional indication by Rxlist and Drugs.com.