Sunfiber Powder & PHGG Supplements
Looking for a gentle, effective prebiotic to support your gut microbiome without the bloating? Sunfiber® is a premium, low-FODMAP certified Partially Hydrolyzed Guar Gum (PHGG) clinically shown to promote regularity, feed beneficial bacteria, and support digestive comfort. Unlike traditional fibers, it dissolves completely clear and won't cause excess gas—making it an ideal clinical adjunct for SIBO, IBS, and sensitive digestion.
Explore our board-certified nutrition specialist-curated selections below, featuring standalone PHGG formulas and targeted prebiotic blends.
My favorite source of Sunfiber is Sunfiber by Tomorrow's Nutrition, which holds distribution rights in the United States, and it's part of our Prebiotic Trio, which we combine and rotate for microbiome diversity support.
What is Sunfiber (PHGG) & How Does It Support Gut Health?
Sunfiber® is a highly unique, soluble prebiotic fiber derived from the natural guar bean. Through a controlled enzymatic process, it is transformed into Partially Hydrolyzed Guar Gum (PHGG). This molecular change means Sunfiber possesses distinct properties from regular guar gum—it is significantly less viscous (less thickening), making it completely tasteless, grit-free, and easy to mix into smoothies, yogurt, or daily water.
As a validated prebiotic, it selectively feeds your beneficial gut microbes (such as Bifidobacteria and Lactobacillus) to maintain a balanced, resilient microbiome.
The SIBO, IBS, and Low-FODMAP Advantage
Finding a fiber supplement that doesn't trigger digestive distress can be a massive hurdle for individuals dealing with complex GI issues. Sunfiber stands out because it is slowly fermented by your gut flora, preventing the rapid gas production that leads to painful bloating and cramping.
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SIBO Adjunct Support: Clinical research highlights PHGG as an excellent dietary adjunct during small intestinal bacterial overgrowth (SIBO) protocols, helping to support intestinal motility and microbial balance.
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IBS Regularity: Whether you face occasional constipation or diarrhea, Sunfiber acts as a true regulator, normalizing stool consistency and transit time for those managing Irritable Bowel Syndrome, Crohn's, or Ulcerative Colitis.
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Monash University Certified: Sunfiber is officially certified Low-FODMAP safe by Monash University (the pioneers of the low-FODMAP diet), giving you absolute peace of mind for sensitive digestion.
See more Gut Motility Supplements