Benefits of the Digestion & Intestinal Card

Key Findings

• Probiotics, particularly Bifidobacterium and Lactobacillus strains, together with prebiotics such as fructooligosaccharides (FOS), have been shown to improve gastrointestinal symptoms, strengthen intestinal barrier function, and positively modulate gut microbiota composition in both individuals with gastrointestinal disorders and healthy adults [1][2][3].
• Digestive enzymes, including bromelain and papain, have demonstrated the ability to modulate gut microbiota, increase beneficial bacteria such as Akkermansia muciniphila, and enhance pancreatic digestive enzyme activity. Appropriate dosing appears important, as very high concentrations may increase intestinal permeability [4].
• Curcumin, particularly when combined with BioPerine® to enhance absorption, has demonstrated anti-inflammatory properties and may support gastrointestinal health, especially in inflammatory conditions such as ulcerative colitis [5].

Introduction

Maintaining a healthy digestive system depends on the coordinated function of the gut microbiota, digestive enzymes, the intestinal barrier, and the body's normal inflammatory response. Nutritional interventions that combine probiotics, prebiotics, digestive enzymes, and selected micronutrients may help support normal digestive function and intestinal health by promoting a balanced gut microbiome and maintaining the integrity of the intestinal barrier [1][2][3].

The Digestion & Intestinal Card combines a comprehensive blend of digestive enzymes (pineapple extract providing bromelain, papaya extract providing papain, and DigeZyme®), multi-strain probiotics (Bifidobacterium and Lactobacillus species), the prebiotic fructooligosaccharides (FOS), curcumin with BioPerine®, fenugreek, L-glutamine, vitamin C, and citrus bioflavonoids. This report reviews the available scientific evidence supporting the potential contribution of these ingredients to digestive comfort, intestinal barrier function, gut microbiota balance, and overall gastrointestinal health.

Main Text

Probiotics and Prebiotics for Gut Health

Probiotics are live microorganisms that, when consumed in adequate amounts, confer health benefits by helping maintain or restore a balanced intestinal microbiome [3][6]. Prebiotics are non-digestible dietary compounds that selectively stimulate the growth and activity of beneficial gut bacteria, thereby supporting gastrointestinal health [2][3].

A randomized controlled clinical trial involving 100 adults with gastrointestinal dysfunction evaluated two high-potency multi-strain probiotic formulations delivering 1,200 billion CFU/day and 2,000 billion CFU/day, respectively. After four weeks, participants experienced significant improvements in common gastrointestinal symptoms, including:

• indigestion,
• abdominal pain,
• reflux,
• constipation, and
• diarrhoea.

The probiotic formulations also reduced markers associated with intestinal inflammation and barrier dysfunction, including faecal calprotectin, NGAL, DAO, D-lactate, and lipopolysaccharide (LPS), while increasing secretory IgA, an important component of intestinal immune defence. Analysis of the gut microbiota demonstrated increased abundance of beneficial bacterial genera, including Bifidobacterium, Lactobacillus, Blautia, and Collinsella [1].

Additional evidence comes from a comprehensive narrative review of 22 randomized controlled trials, which concluded that prebiotic supplementation consistently increased populations of Bifidobacterium and Lactobacillus, enhanced short-chain fatty acid production, improved stool frequency and consistency, and strengthened intestinal barrier integrity [2].

A systematic review and meta-analysis of 24 clinical trials further demonstrated that probiotic and synbiotic supplementation significantly reduced circulating lipopolysaccharide (LPS) (SMD: -0.54) and zonulin (SMD: -0.49), suggesting improvements in intestinal permeability, commonly referred to as "leaky gut." In addition, prebiotic supplementation evaluated across 16 randomized controlled trials significantly reduced LPS concentrations (SMD: -0.88) [7].

Among prebiotics, fructooligosaccharides (FOS) have been specifically recognised for their ability to support digestive health by promoting a favourable gut microbiome. FOS supplementation has been associated with a reduced risk of digestive disturbances such as inflammatory bowel disease (IBD), constipation, and irritable bowel syndrome (IBS), while also contributing to normal immune function [8].

Digestive Enzymes

Digestive enzymes facilitate the breakdown of nutrients and may also influence the composition of the gut microbiota.

Experimental research investigating the cysteine proteases bromelain (derived from pineapple) and papain (derived from papaya) demonstrated beneficial effects on digestive function and microbial composition. In a study involving healthy C57BL/6 mice, supplementation with 1 mg/day of bromelain or papain for three days reduced the abundance of Proteobacteria while increasing the beneficial bacterium Akkermansia muciniphila. Both enzymes also enhanced pancreatic trypsin activity, while bromelain increased the thickness of the ileal mucosa [4].

An accompanying in vitro study using a reconstructed three-dimensional human intestinal tissue model found that very high enzyme concentrations (10 mg/mL) increased paracellular permeability by temporarily altering epithelial integrity. These findings suggest that digestive enzymes may enhance nutrient transport at appropriate doses, while highlighting the importance of using clinically appropriate supplementation levels [4].

Additional evidence from a review of 13 studies suggests that supplemental proteases and lipases may also exhibit prebiotic-like effects by enriching beneficial bacterial populations and contributing to a healthier gut microbiota composition [9].

Curcumin, Fenugreek, and BioPerine®

Curcumin is widely recognised for its anti-inflammatory properties and has been investigated as a complementary nutritional strategy for inflammatory gastrointestinal disorders, including inflammatory bowel disease and ulcerative colitis [10].

Systematic reviews and meta-analyses evaluating curcumin supplementation have explored its potential role in inducing and maintaining remission in ulcerative colitis, suggesting beneficial effects on intestinal inflammation when used alongside standard therapy [5].

Because curcumin is naturally absorbed poorly, formulations commonly combine it with BioPerine® (black pepper extract), which enhances its bioavailability and may improve its physiological effects [5].

Although fenugreek is included in the Digestion & Intestinal Card, the scientific literature reviewed for this report does not provide specific evidence regarding its direct contribution to digestive or intestinal health within this particular formulation.

Additional Supporting Nutrients

Several additional nutrients included in the Digestion & Intestinal Card provide complementary nutritional support.

L-glutamine is an amino acid that serves as an important energy source for intestinal epithelial cells and contributes to maintaining the normal function of the intestinal barrier.

Vitamin C supports normal immune function and acts as an antioxidant that helps protect cells against oxidative stress.

Citrus bioflavonoids, including hesperidin, possess antioxidant properties and are frequently included in nutritional formulations designed to support overall health.

Although these nutrients are widely recognised for their physiological roles, the scientific literature reviewed for this report did not include studies specifically evaluating betaine HCl, L-glutamine, vitamin C, or citrus bioflavonoids within the exact combination of ingredients used in the Digestion & Intestinal Card.

Conclusion

The available scientific literature supports the potential benefits of several ingredients included in the Digestion & Intestinal Card for digestive and intestinal health.

Probiotics and prebiotics have consistently demonstrated the ability to improve gastrointestinal symptoms, strengthen intestinal barrier function, and positively influence the composition of the gut microbiota. Multi-strain probiotic formulations containing Bifidobacterium and Lactobacillus species, together with prebiotics such as fructooligosaccharides (FOS), have been associated with improvements in digestive comfort, intestinal integrity, and markers of gut health [1][2][3][7][8].

Digestive enzymes, including bromelain and papain, may further support digestive function by enhancing protein digestion and contributing to favourable changes in gut microbial composition, although appropriate dosing is important to maintain epithelial integrity [4][9].

Curcumin, particularly when formulated with BioPerine®, provides anti-inflammatory support and has demonstrated potential benefits for intestinal health, especially in inflammatory bowel conditions such as ulcerative colitis [5][10].

Although the available literature does not specifically evaluate the complete combination of ingredients contained in the Digestion & Intestinal Card, nor extensively investigate ingredients such as fenugreek, L-glutamine, vitamin C, and citrus bioflavonoids within this exact formulation, the individual ingredients supported by scientific evidence demonstrate complementary roles in promoting digestive comfort, maintaining intestinal barrier function, supporting a balanced gut microbiota, and contributing to overall gastrointestinal health.

References

1. X Zhang et al. High-potency multi-strain probiotic formulations for safety and improvement of gastrointestinal function and intestinal health: A randomized controlled clinical trial. Frontiers in Nutrition (2025). https://pubmed.ncbi.nlm.nih.gov/41334342/
2. CRAV Monteiro et al. Prebiotics and Gut Health: Mechanisms, Clinical Evidence, and Future Directions. Nutrients (2026). https://pubmed.ncbi.nlm.nih.gov/41683196/
3. Jesús Ángel Baró de la Fuente et al. Probiotics and Prebiotics: The Power of Beneficial Microbes for Health and Wellness. Microbiology Archives: An International Journal (2019). https://microjournal.researchfloor.org/probiotics-and-prebiotics-the-power-of-beneficial-microbes-for-health-and-wellness/?view=full
4. O Kostiuchenko et al. Effects of Proteases from Pineapple and Papaya on Protein Digestive Capacity and Gut Microbiota in Healthy C57BL/6 Mice and Dose-Manner Response on Mucosal Permeability in a Human Reconstructed Intestinal 3D Tissue Model. Metabolites (2022). https://pubmed.ncbi.nlm.nih.gov/36355110/
5. Richtlijnendatabase.nl. Clinical guideline on curcumin in ulcerative colitis.
6. Uma Kumari et al. Probiotics in Human Nutrition, Health Improvement, Infection Prevention, and Disease Management – A Review. International Journal of Research Publication and Reviews (2023). https://ijrpr.com/uploads/V4ISSUE4/IJRPR11371.pdf
7. Z Ghorbani et al. Reinforcing Gut Integrity: A Systematic Review and Meta-analysis of Clinical Trials Assessing Probiotics, Synbiotics, and Prebiotics on Intestinal Permeability Markers. Pharmacological Research (2025). https://pubmed.ncbi.nlm.nih.gov/40378939/
8. Asia Atta et al. A Comprehensive Review on Health Benefits of Fructooligosaccharides. eFood (2025). https://iadns.onlinelibrary.wiley.com/doi/10.1002/efd2.70041
9. Y Yang et al. Potential Roles of Exogenous Proteases and Lipases as Prebiotics. Nutrients (2025). https://pubmed.ncbi.nlm.nih.gov/40077794/
10. M Beikmohammadi et al. Therapeutic Potential of Probiotics: A Review of Their Role in Modulating Inflammation. Probiotics and Antimicrobial Proteins (2025). https://pubmed.ncbi.nlm.nih.gov/40465090/