In terms of surface area, the gastrointestinal tract comprises one of the largest organs in the body. The roles that it plays are varied and extend well beyond simply moving and digesting food to allow for the absorption of nutrients. In addition to acting as a barrier against the harsh external environment, the digestive system also represents one of the body’s largest immune organs, possessing an intricate lymph network. The gastrointestinal tract houses a highly complex ecosystem that contains trillions of microorganisms. Research continues to uncover new ways in which beneficial bacteria can positively impact health, expanding beyond the confines of the digestive tract to include cardiovascular health, cognition, weight management and more.


Use our side-by-side comparison chart to find the right Multi-Probitiotic® for you and your clients.

View the Multi-Probiotic Product® Selection Guide

Learn more about new products offering Digestive Support for Healthy Aging

Gastrointestinal Support Protocol

Developed by Daniel Kalish, D.C.+

Protocol Objectives:
To provide supplemental recommendations to help support the microbiome, maintain integrity of the intestinal lining, and promote GI function and overall digestive health.

View the Gastrointestinal Support Protocol

View the GI Microbiome Support Protocol

+Dr. Kalish is a retained consultant for Douglas Laboratories.

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  1. HC2 | Betaine Hydrochloride (250 count)
    Betaine Hydrochloride (250 count)
    Healthy digestive function
  2. 80106 | Betaine Plus ®
    Betaine Plus ®
    Betaine Hydrochloride for support of stomach digestion
  3. 7102-90X | Bilex
    Healthy digestive function
  4. BIO | Bio-Dophilus ®
    Bio-Dophilus ®
    Gastrointestinal health
  5. 80023-100X | Cape Aloe
    Cape Aloe
    Gastrointestinal regularity
  6. CAP | Caprylex ™
    Caprylex ™
    Healthy microbial balance
  7. 81433-100X | D.L. Duo-Dophilus ®
    D.L. Duo-Dophilus ®
    Digestive health
  8. FPC | Fiber-Plex ™
    Fiber-Plex ™
    Digestive health
  9. 201538-90X | GI Digest
    GI Digest
    Comprehensive digestive enzyme formula
  10. 201768-60X | Ginger Root Max-V
    Ginger Root Max-V
    Standardized Ginger root
  11. 202467-60X | Gluten-Dairy Ultra Enzyme 60 chewable tablets
    Gluten-Dairy Ultra Enzyme 60 chewable tablets
    Supports gluten and dairy digestion
  12. INT-C | Intestamine ®
    Intestamine ®
    Gastrointestinal support
  13. INT | Intestamine ® (Powder)
    Intestamine ® (Powder)
    Gastrointestinal support
  14. 7940-60X | L-Glutamine
    L-Glutamine 500 mg capsule
  15. 907101-250X | L-Glutamine Powder
    L-Glutamine Powder
    Pure L-Glutamine powder 4 g
  16. LPN | Lipanase ™
    Lipanase ™
    Pancreatic enzyme support
  17. 57732P-198X | Microbiome Fiber 198 g
    Microbiome Fiber 198 g
    Prebiotic soluble fiber for gastrointestinal health and regularity
  18. 57774P-70X | Microbiome Protect™ w/IgG 70 g
    Microbiome Protect™ w/IgG 70 g
    ImmunoLin® immunoglobulins, prebiotic, and spore probiotic for intestinal health
  19. 57649P-60X | Multi-Probiotic ® 40 Billion (Powder)
    Multi-Probiotic ® 40 Billion (Powder)
    Gastrointestinal and immune health
  20. 202634-60X | Multi-Probiotic 40 Billion
    Multi-Probiotic 40 Billion
    Gastrointestinal and immune health
  21. 202516-60X | Multi-Probiotic® 15 Billion
    Multi-Probiotic® 15 Billion
    Gastrointestinal and immune health
  22. 202449-100X | Multi-Probiotic® 4 Billion
    Multi-Probiotic® 4 Billion
    Gastrointestinal and immune health
  23. 202117-90X | Multi-Probiotic® Sinus Support‡
    Multi-Probiotic® Sinus Support‡
    Support for immune and respiratory health
  24. 202694-60X | Multi-Probiotic® Spore+SBC
    Multi-Probiotic® Spore+SBC
    Support for gastrointestinal and immune health
  25. 83905 | Olive Leaf Extract
    Olive Leaf Extract
    Support for microbial balance and cardiovascular health
  26. 202782 | Pan-Ox-5™
    Support for healthy digestion
  27. 99076-60X | Pylori-Plex
    Traditional support for a healthy stomach lining and intestinal tract
  28. 200803-120X | Ultra MFP Forte
    Ultra MFP Forte
    Traditional support for microbial balance
  29. 7048-120X | Vegetarian Enzyme
    Vegetarian Enzyme
    Digestive health
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