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Well-tolerated prebiotic soluble fiberJust add one scoop to every meal
Supports normal regularityHelps manage occasional constipation and diarrhea
Helps to restore healthy digestive balanceNourishes more kinds of beneficial gut bacteria
Promotes immune healthEncourages gut bacteria diversity
Enhances calcium and magnesium absorptionHelps maximize the body’s use of essential minerals
Increases satietyHelps suppress appetite

Extra Strength Great Gut® Prebiotic Fiber Helps You Feel Normal After Every Meal

Great Gut® prebiotic fiber is an exclusive blend of four research-based prebiotic fibers. It does what other fiber supplements can’t. Our extra-strength prebiotic fiber feeds more kinds of beneficial gut bacteria, which promotes normal digestive health and supports regularity. It also dissolves easily and has a mildly sweet taste. And it’s well tolerated, when used as directed, making it the best prebiotic supplement on the market.
All natural icon

All Natural

Great Gut® Extra-Strength Prebiotic Fiber is a blend of four natural prebiotic dietary fibers only. We never use artificial sweeteners, dyes, perfumes or other industrial chemicals.
Non GMO icon

Non GMO

Great Gut® Extra-Strength Prebiotic Fiber is a powder dietary fiber supplement made from clean, all natural sources. It does not contain any genetically modified ingredients.
Non Dairy icon

Non Dairy

Great Gut® Extra-Strength Prebiotic Fiber is always free of dairy, which is a known source of potential allergens. It contains no lactose or other ingredients derived from dairy sources.
Research based icon

Research Based

Great Gut® Extra-Strength Prebiotic Fiber is a blend of four clinically proven, trademarked prebiotic fibers to deliver the best gut health benefits available on the market today.

The Great Gut® Advantage: Promotes Normal Digestive Health

For better regularity and digestive health, we need to have a variety of beneficial gut bacteria. Prebiotic fiber feeds our good gut bacteria and stimulates their growth. Extra strength Great Gut® Prebiotic Fiber Blend contains four different, clinically proven prebiotic fibers.

Sunfiber
PreticX
Oraft by Beneo GmbH
AvantaFiber

It feeds more kinds of beneficial gut bacteria than other fiber supplements. Plus, it’s easy to use. It’s got a mildly sweet flavor, and mixes virtually invisibly in food and non-carbonated liquids. There’s no glop, grit or unpleasant taste.


Compare Great Gut® With Leading Brands

  • Great Gut® Prebiotic Fiber
  • High fiber diversity (4)
  • Prebiotic effects
  • Soluble
  • Clean, All Natural, Non GMO
  • ~ 5.5 grams of fiber per serving.
  • Metamucil® Orange Smooth Powder
  • Low fiber diversity (1)
  • No prebiotic effects
  • Soluble
  • Artificial dyes, preservatives, and sweeteners
  • ~ 3 grams of fiber per serving.
  • Benefiber® Powder
  • Low fiber diversity (1)
  • Prebiotic effects
  • Soluble
  • Wheat processing byproduct
  • ~ 3 grams of fiber per serving.
  • Citrucel® Sugar-Free Orange Mix
  • Low fiber diversity (1)
  • No prebiotic effects
  • Not soluble
  • Artificial dyes, preservatives, and sweeteners
  • ~ 2 grams of fiber per serving.
  • Fiber Choice® Sugar-Free Chewable Tablets
  • Low fiber diversity (1)
  • Prebiotic effects
  • Soluble
  • Artificial dyes, preservatives, and sweeteners
  • ~ 2 grams of fiber per serving.

    Stothart, M. R., Bobbie, C. B., Schulte-Hostedde, A. I., Boonstra, R., Palme, R., Mykytczuk, N. C., & Newman, A. E. (2016). Stress and the microbiome: linking glucocorticoids to bacterial community dynamics in wild red squirrels.Biology letters, 12(1), 20150875.Xu, J., Verbrugghe, A., Lourenço, M., Janssens, G. P., Liu, D. J., Van de Wiele, T., ... & Bosch, G. (2016). Does canine inflammatory bowel disease influence gut microbial profile and host metabolism?. BMC Veterinary Research, 12(1), 114.Desbonnet, L., Clarke, G., Shanahan, F., Dinan, T. G., & Cryan, J. F. (2014). Microbiota is essential for social development in the mouse. Molecular psychiatry, 19(2), 146.Neufeld, K. A., & Foster, J. A. (2009). Effects of gut microbiota on the brain: implications for psychiatry. J Psychiatry Neurosci, 34(3), 230-1.Rousseaux, C., Thuru, X., Gelot, A., Barnich, N., Neut, C., Dubuquoy, L., ... & Ouwehand, A. (2007). Lactobacillus acidophilus modulates intestinal pain and induces opioid and cannabinoid receptors. Nature medicine, 13(1), 35-37.Whitehead, W. E., Palsson, O., & Jones, K. R. (2002). Systematic review of the comorbidity of irritable bowel syndrome with other disorders: what are the causes and implications?. Gastroenterology, 122(4), 1140-1156.Kuntz, T., & Gilbert, J. (2016). Does the brain listen to the gut?. eLife, 5, e17052.Goodrich, J. K., Waters, J. L., Poole, A. C., Sutter, J. L., Koren, O., Blekhman, R., ... & Spector, T. D. (2014). Human genetics shape the gut microbiome. Cell, 159(4), 789-799.
  • Stressed out squirrels showed less microbial diversity and more harmful bacteria in their gut microbiomes.
    Stothart, M. R., Bobbie, C. B., Schulte-Hostedde, A. I., Boonstra, R., Palme, R., Mykytczuk, N. C., & Newman, A. E. (2016). Stress and the microbiome: linking glucocorticoids to bacterial community dynamics in wild red squirrels.Biology letters, 12(1), 20150875.
  • Breastfeeding has been shown to promote beneficial lactic acid bacteria in the baby's gut flora.
  • 90% of the body's serotonin, a brain neurotransmitter, is manufactured in the digestive tract.
  • Low-dose exposure to common household chemicals modified the gut bacteria in adolescent rats.
  • Dogs can also develop IBD (inflammatory bowel disease) and may benefit from probiotics.
    Xu, J., Verbrugghe, A., Lourenço, M., Janssens, G. P., Liu, D. J., Van de Wiele, T., ... & Bosch, G. (2016). Does canine inflammatory bowel disease influence gut microbial profile and host metabolism?. BMC Veterinary Research, 12(1), 114.
  • The gastrointestinal biome can influence the ability to properly form memory.
  • Mice without healthy gut flora have trouble learning normal social, repetitive behaviors.
    Desbonnet, L., Clarke, G., Shanahan, F., Dinan, T. G., & Cryan, J. F. (2014). Microbiota is essential for social development in the mouse. Molecular psychiatry, 19(2), 146.
  • Overweight and asthmatic children have distinct microbiota compositions.
  • Antidepressants may work to help treat irritable bowel syndrome thanks to the bidirectional communication system between the gut and central nervous system.
    Neufeld, K. A., & Foster, J. A. (2009). Effects of gut microbiota on the brain: implications for psychiatry. J Psychiatry Neurosci, 34(3), 230-1.
  • African hunter-gatherer peoples, the Hadza, may have extremely diverse microbiomes that protect them from certain "modern" diseases.
  • Varying caloric intake for as little as three consecutive days has been shown to drastically alter gut microbiota.
  • The marine bacteria associated with seaweed may explain how Japanese people have enzymes specific to digesting seaweeds that are absent in North Americans.
  • Certain Lactobacillus strains have been shown to have an analgesic function in the gut, similar to the effects of morphine.
    Rousseaux, C., Thuru, X., Gelot, A., Barnich, N., Neut, C., Dubuquoy, L., ... & Ouwehand, A. (2007). Lactobacillus acidophilus modulates intestinal pain and induces opioid and cannabinoid receptors. Nature medicine, 13(1), 35-37.
  •   More than half of the patients with irritable bowel syndrome also meet the criteria for mood disorders.
    Whitehead, W. E., Palsson, O., & Jones, K. R. (2002). Systematic review of the comorbidity of irritable bowel syndrome with other disorders: what are the causes and implications?. Gastroenterology, 122(4), 1140-1156.
  • Altering the gut microbiome can trigger behavioral changes.
    Kuntz, T., & Gilbert, J. (2016). Does the brain listen to the gut?. eLife, 5, e17052.
  • Microbes found in individuals with low BMI have been shown to alter obese- associated biomes and reduce weight gain in mice.
    Goodrich, J. K., Waters, J. L., Poole, A. C., Sutter, J. L., Koren, O., Blekhman, R., ... & Spector, T. D. (2014). Human genetics shape the gut microbiome. Cell, 159(4), 789-799.
  • Having an older brother or sister benefits young children's microbial diversity even more than exposure to family pets does.
  • How babies are born makes a difference in the composition of their intestinal microbiotas.
  • There are up to a billion times more bacteria present in the colon than in the stomach.
  • The collective human gut microbiota may be composed of as many as 35,000 bacterial species.

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