Great product
"I like this powder over others for several reasons: it's tasteless and dissolves completely. No clumps! Mostly, it's done more for my gut than anything else has."









A synbiotic blend of clinically proven prebiotic fiber and probiotics that help support healthy digestive balance.* Sunfiber® GI uses the award-winning Sunfiber® brand of soluble dietary fiber and the clinically proven Bifidobacterium lactis.
The human digestive tract harbors trillions of bacteria. Most of these are beneficial, and we call them probiotics. Maintaining balance is critical to health, but diet, travel, medications, stress, and aging often disrupt it. This can lead to digestive discomfort and a weakened immune system. Supplementing with probiotics helps replenish these friendly bacteria and support digestive and immune health.*
Each serving provides 8 billion CFU of Bifidobacterium lactis (B. lactis) at time of manufacture. This well-researched probiotic works in harmony with Sunfiber®. This strain is highly resistant to gut pH and bile conditions, and has been shown to support immune function.*
Sunfiber® GI may be taken any time of day, though many prefer it first thing in the morning to get digestion on track for the day. Mix into cereal, yogurt, smoothies, or add to your water bottle for on- the-go support.
Yes. Each serving contains 6 grams of Sunfiber® and 8 billion CFU of B. lactis. Sunfiber® is GRAS (Generally Recognized As Safe) and is approved as a fiber source by the FDA, Health Canada, and other authorities.
One serving equals 5 grams of fiber. The recommended daily fiber intake is 25 grams for women and 38 grams for men. Sunfiber® GI helps bridge the gap between dietary intake and those daily recommendations.
Yes. Sunfiber® GI is 100% natural. It contains only Sunfiber® (a plant-based fiber) and B. lactis - no preservatives or additives. It is Clean Label Project Certified, Non-GMO Project Verified, and 100% gluten-free.
Each serving contains just 10 calories.
Sunfiber® GI contains highly shelf-stable probiotics. Store in a cool, dry place away from excess light, heat, and moisture. Refrigeration is optional.
Sunfiber® is an all-natural, regulating soluble dietary fiber derived from the guar bean. Sunfiber® acts as the perfect food source for probiotics, helping increase beneficial bacteria and reduce harmful bacteria in the gut.*
Insoluble fiber adds bulk to stool (found in grains, nuts, seeds, and fruit skins). Soluble fiber dissolves in water. The right soluble fiber supports digestion, feeds good bacteria, moderates glucose levels, helps lower cholesterol, and promotes satiety. Some soluble fibers, however, ferment too quickly, causing gas, bloating, and even diarrhea. Sunfiber® is a soluble, low-FODMAP fiber that supports digestive health without these side effects.*
Prebiotics are food for probiotics. The right prebiotic fiber is essential for probiotics to thrive — but it must be gentle and well tolerated. Sunfiber® is unique among prebiotic fibers: it ferments steadily, producing more short-chain fatty acids (SCFAs) over time, without causing uncomfortable gas or bloating.*
Sunfiber® is a prebiotic fiber that is unique in comparison to other non galactomannan based fibers. A prebiotic fiber is one that produces "short chain fatty acids" (SCFA) in the gut via a fermentation process. The rate of production of SCFAs is very important. If fermentation occurs rapidly (as is the case with Inulin and other soluble fibers) the result is an excess of uncomfortable bloating and flatulence. The fermentation process of Sunfiber® is steady resulting in a higher total amount of SCFAs that are produced over a greater period of time, leading to significantly less gas, bloating and discomfort.
SCFAs are small compounds produced by fermentation of dietary fiber by gut bacteria. The three primary SCFAs are acetate, propionate, and butyrate. Butyrate fuels the cells of the colon and supports intestinal health.*
Guar gum is a viscous, water-soluble carbohydrate from the guar seed, used in foods as a thickener and stabilizer. Sunfiber is a non-viscous form called partially hydrolyzed guar gum (PHGG). It dissolves completely and is used as a gentle fiber source in supplements and functional foods.
FODMAPs (fermentable oligosaccharides, disaccharides, monosaccharides, and polyols) are poorly absorbed sugars that may trigger digestive discomfort in those with IBS or other functional GI disorders. Many high-fiber foods are also high in FODMAPs, making it difficult to meet daily fiber needs. Sunfiber® is proud to be the first prebiotic fiber to achieve Low-FODMAP Certification by Monash University.
At recommended serving size, side effects like gas, bloating, or diarrhea are virtually nonexistent.
25 grams/day for women and 38 grams/day for men, yet most people only get 10–15 grams. Sunfiber® GI helps close this gap. How much Sunfiber® GI should I consume?
Sunfiber® may be taken at any time of the day but is often recommended to take first thing in the morning to get your digestive system on track for a comfortable and healthy day. Take with your morning cereal, yogurt, smoothie or add to your water bottle to take with you on the go.
Sunfiber® GI is safe and has long been used during pregnancy and lactation, though you should consult your healthcare practitioner before use.
Sunfiber® is appropriate for all ages above 9 months, but you should consult your healthcare practitioner before use. One 6-gram serving is recommended.
Sunfiber® is stable in hot foods or beverages, but heat can reduce probiotics. For best results, add to lukewarm or cool foods and beverages.
Overall rating: 4.87234 / 5 from 235 reviews.
Sunfiber® GI 30-Day Powder is a highly recommended soluble fiber supplement praised for its effectiveness in regulating bowel movements, reducing bloating, and being convenient for travel. Customers appreciate its ability to dissolve without altering taste or texture, though opinions on taste vary. The product is also noted for its helpful packaging and individual packets.
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"I like this powder over others for several reasons: it's tasteless and dissolves completely. No clumps! Mostly, it's done more for my gut than anything else has."
"Absolutely best fiber that works for me. I've tried many! Simple and easy to blend. Best of all, it helps tremendously with my constipation. It's a must try for anyone suffering with gut issues."
"I love the single serve packs of Sunfiber GI. I add to my morning cold brew. Love that it is tasteless and does not change consistency of food/beverages. Always an added benefit to get the pre and probiotics, too!! I have already recommended to friends and family to try!!"
"Sunfiber is wonderful. It provides the right kind of fiber for my body in an easy to use, no taste way. What could be better?"
"With having gut issues the fiber gi is great. I take it everyday with a glass of water. No side effects."
"While I didn’t feel the affects, I def felt it making my gut being easy on its self. I’ve dealt with horrible gut health but this has helped smooth it"
"This has been the best new product that I have introduced to my routine! I have never felt more regular in my life. . . I used to feel super bloated after eating just about anything but since adding this to my day, I feel so much better."
"These stick packs are now an essential part of traveling/vacationing for me!"
"My digestive issues are a lot better. This is the best fiber supplement I've ever had!"
"I started taking SunFiber GI almost one month ago and it has resolved my constipation, which is caused by medication I take daily. Every morning I add one packet to my hot coffee. It dissolves completely and has no taste. Within 3 days of taking SunFiber GI, I had a normal BM. This has been such a relief in my daily life, because now I am regular with healthily formed poop. SunFiber GI is now a staple in my routine and I am so grateful for it."
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