Short Bowel Syndrome Protocol

DigestiveEmerging Evidence

supplements

Primary

Supporting

Grade A

Studies

Primary Stack

Core supplements with strongest evidence

GlutamineB

15-30g daily (divided doses)

Primary fuel for enterocytes; promotes intestinal adaptation and villus growth

8 studies180 participants

Supporting Studies (1)

PMID: 16998142 - Glutamine in short bowel syndrome (2006)

Supporting Stack

Additional supplements for enhanced results

ColostrumC

3-6g daily

Contains growth factors (IGF-1, TGF-β) that support intestinal epithelial repair

↑Muscle Mass↓Weight

3 studies60 participants

Probiotics (Multi-strain)C

20-50 billion CFU daily

Supports intestinal adaptation and reduces bacterial overgrowth risk

4 studies80 participants

Vitamin B12 (Sublingual/Injection)A

1000mcg daily sublingual or monthly injection

Often malabsorbed due to ileal resection; sublingual bypasses GI absorption

5 studies120 participants

How This Protocol Works

Simple Explanation

Short bowel syndrome occurs after surgical removal of significant portions of the small intestine, leading to malabsorption of nutrients, fluids, and electrolytes. This protocol supports intestinal adaptation.

•Glutamine is the primary fuel source for intestinal cells. It promotes the growth of new intestinal villi (the finger-like projections that absorb nutrients) and supports the intestinal barrier. Studies show improved nutrient absorption with high-dose glutamine.

•Colostrum contains natural growth factors that stimulate intestinal cell growth and repair.

•Probiotics help prevent small intestinal bacterial overgrowth (SIBO), which is common in SBS and worsens malabsorption.

•Vitamin B12 is critical because it's normally absorbed in the ileum (often removed). Sublingual or injectable forms bypass the damaged gut.

Note: SBS patients require comprehensive medical management including fluid/electrolyte replacement, fat-soluble vitamin monitoring (A, D, E, K), and often specialized nutrition support.

Expected timeline: Intestinal adaptation continues for 1-2 years post-surgery. Supplements support this process but work gradually over months.

Clinical Perspective

SBS results from extensive small bowel resection, leaving insufficient absorptive surface. Intestinal adaptation involves villus hyperplasia and increased absorptive capacity over 1-2 years.

•Glutamine (B-grade): Conditionally essential amino acid; primary fuel for enterocytes via glutaminase. Stimulates GLP-2 secretion, promoting intestinal adaptation. Combined with growth hormone in some protocols (PMID: 16998142). Dose: 0.3-0.5g/kg/day.

•Colostrum (C-grade): Contains IGF-1, TGF-β, and epidermal growth factor (EGF) that stimulate enterocyte proliferation and differentiation.

•Probiotics (C-grade): Prevent D-lactic acidosis and SIBO. Saccharomyces boulardii may be preferred (yeast doesn't contribute to D-lactate production).

•Vitamin B12 (A-grade): Ileal resection eliminates intrinsic factor-B12 absorption site. Monitor serum B12 and methylmalonic acid. Sublingual methylcobalamin (1000mcg daily) or IM injection (1000mcg monthly).

Additional considerations:

•Fat-soluble vitamins (A, D, E, K) require water-miscible forms

•Zinc, selenium, magnesium often depleted

•Medium-chain triglycerides (MCT) for fat absorption

•Monitor 24-hour urinary oxalate (hyperoxaluria risk)

Biomarkers: Citrulline (marker of enterocyte mass), fecal fat, vitamin levels, electrolytes, trace minerals.

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