Reverse Age Lab Logo
Tomorrows Nutrition Tomorrow's Nutrition Sunfiber Soluble Prebiotic Fiber Supplement bottle
+ Add to ProtocolAsk Rala about it

Tomorrows Nutrition Tomorrow's Nutrition Sunfiber Soluble Prebiotic Fiber Supplement Review

A soluble, prebiotic fiber supplement featuring Sunfiber (partially hydrolyzed guar gum) designed to support digestive health and regularity without causing excess gas or bloating. It dissolves easily in non-carbonated beverages.

Product Focus: Digestion and Bloating
Tier ⓘ
Members
Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
Members
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
Members
Biohacker Mentions
Members
Cost per month
$25
+ Add to ProtocolAsk Rala about it

Study, Trial or Testing Result Summary

MembersHuman studies

This product gives 7 grams a day of partially hydrolyzed guar gum, a gentle form of guar fiber, which is the 5 to 6 grams used in the studies. In 108 adults with irritable bowel syndrome, 6 grams a day for 12 weeks bloating and gas than placebo, though other symptoms and quality of life did change. …

Members see the full analysis, checked against their own meds and goals. Start My 7-Day Free Trial →

Review Totals and Summary

Members4,548 reviews
4,548 reviews · Amazon 3,204 · Tomorrowsnutrition 753 · Target 568 · Walmart 23

Tomorrow's Nutrition Sunfiber Soluble Prebiotic Fiber Supplement has earned a substantial number of reviews across major retailers like Amazon, Target, Walmart, and the Tomorrow’s Nutrition website, and the prevailing sentiment is decidedly . Users frequently mention in their digestive and regularity after incorporating this supplement into their routine. …

Members see the full analysis, checked against their own meds and goals. Start My 7-Day Free Trial →

Biohacker Summary

MembersWhat our biohacker panel says

Our biohacker panel has discussed this product yet.

Members see the full analysis, checked against their own meds and goals. Start My 7-Day Free Trial →

RAL Summary

MembersThe tier and why

Members see the full analysis, checked against their own meds and goals. Start My 7-Day Free Trial →

More Details

MembersBody systems · Combine with · Possible side effects

Body systems: Digestive system. Combine with and possible side are for members.

Members see the full analysis, checked against their own meds and goals. Start My 7-Day Free Trial →

Supplement Facts

Sugars 0 g · SUNFIBER GUAR FIBER 7 g
Supplement Facts
Serving Size 1 Scoop(s)
Servings Per Container 30
Amount Per Serving% Daily Value
Calories15
Total Carbohydrate7 g2%
Dietary Fiber6 g24%
Sugars0 g
SUNFIBER GUAR FIBER7 g†
* Percent Daily Values are based on a 2,000 calorie diet.
† Daily Value not established.

Directions: 1 scoop (7g) once daily.

Barcode (UPC) 850236004026 · Label source: GNC · Report a label change

Where to Buy

Tomorrows Nutrition · Amazon · Walmart
Tomorrows NutritionBuy ↗
AmazonBuy ↗
WalmartBuy ↗

We sell no supplements. Prices change; check the store.

More digestion and bloating products

MembersThe highest ranked for the same goal
  • Tier
  • Tier
  • Tier

All digestion and bloating supplements, ranked

Members see the products, their ranking and the reasons. Start My 7-Day Free Trial →

Read more

Our articles on this subject

Graded October 23, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.