Immune Support†
Gut Health†
Daily Energy†
Metabolism Support†
Cardiovascular Wellness†
Healthy Inflammation Response†
Rated 4.9 100K+ SoldCustomer 1Customer 2Customer 3Customer 4Customer 5Customer 6
Daily Digestive Support

A Calmer Gut Starts Here

Made with clinically studied fibers to help support gut balance and digestive comfort, naturally.†

Inflammation Support†Metabolic Support†Immune Wellness†Gut & Digestion†Daily Energy†Cardiovascular Wellness†
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Description

U1 Fiber combines four prebiotic fiber sources (10g per scoop) in one daily Blue Raspberry Lemonade drink: your daily glass of Blue Fiber™.

Chicory root inulin, acacia fiber, resistant dextrin, and psyllium husk, each doing a different job, powered by Blue Fiber™, our four-source fiber system, and naturally blue from spirulina.†

Four ingredients working together in one daily scoop — decades of published fiber research on one side, a drink you actually look forward to on the other.

No fillers, no grit, just results you can feel.

Why You Need Blue Fiber™?

If your gut feels off, your digestion needs help, or you’re tired of supplements that promise the world and deliver nothing, Blue Fiber™ was made for you.

Most adults get roughly half the fiber they need each day. Blue Fiber™ closes the gap with 10g of prebiotic fiber per scoop from four sources: psyllium for regularity, acacia and resistant dextrin for digestive comfort, and chicory root inulin to feed the good bacteria in your gut.†

Four fibers, one scoop, all working for you every morning.

About Your Free Gifts

These accessories are designed to make your daily Blue Fiber™ routine easier and more beautiful. Yours included free as a thank you for trying U1 Fiber.

Premium Reusable Straw: Our Premium Reusable Straw is designed for your daily glass of Blue Fiber™: a wide, smooth stainless straw that makes every sip easy, with a cleaning brush and a travel sleeve so it goes wherever your routine does. Most of our customers tell us the daily ritual of pouring their glass and reaching for the straw is what helps them stay consistent with their fiber routine.

Electric Mixer: Our Electric Mixer is a compact, rechargeable handheld frother that blends a full scoop of U1 Fiber into cold water in seconds, no shaker, no clumps. Small enough for a desk drawer or a travel bag. A simple tool that makes the smoothest glass of Blue Fiber™ the easiest part of your morning.

Benefits
  • Supports healthy digestion and gut balance†
  • Supports your immune system’s natural defenses†
  • Supports healthy metabolic markers already within normal range†
  • Supports cardiovascular wellness†
  • Helps maintain a healthy inflammatory response†
  • Promotes steady daily energy and mental clarity†
  • Provides 10g of prebiotic fiber per scoop from four sources
  • 10g of protein per serving to support nutrition and satiety*
  • Electrolytes (sodium, potassium, magnesium) to support everyday hydration*
  • Blue Raspberry Lemonade flavor, mixes easily in cold water
  • Free from gluten, sugar, and artificial dyes
Recommended Use

Mix 1 scoop daily into 8 to 12 oz of cold water, shake or stir. Consistent daily use leads to the best results.

New to fiber? Start with half a scoop for the first few days and work up to a full scoop. Most customers report noticeable improvements in 7–14 days.

Do You Offer a Guarantee?

Yes! All U1 Fiber orders are backed by our 30-day money-back guarantee.

If you’re not completely satisfied, simply contact us—we’ll make it right, no questions asked.

The Story Behind The Blue

Powered by Blue Fiber™

Blue Fiber™ is your daily fiber drink, delivering 10g of prebiotic fiber from four complementary sources — with added protein, electrolytes, and zero sugar.

10gPrebiotic Fiber
4Fiber Sources
Naturally BlueFrom Spirulina

4 Clinically Studied
Compounds Doing Different Jobs

Chicory Root Inulin
Prebiotic

Chicory Root Inulin

A prebiotic fiber from chicory root that feeds the beneficial bacteria in your gut, supporting a balanced microbiome and everyday digestive comfort.†

Acacia Fiber
Gentle soluble fiber

Acacia Fiber

A slow-fermenting soluble fiber from the acacia tree. Mixes smooth, easy on the stomach, and supports steady digestive health without the harshness of traditional fiber.†

Resistant Dextrin
Soluble prebiotic

Resistant Dextrin

A soluble fiber that resists digestion in the small intestine so it can go to work in the gut, supporting regularity and a healthy gut environment.†

Psyllium Husk
Bulk-forming fiber

Psyllium Husk

A bulk-forming fiber that absorbs water to support healthy, comfortable regularity. The fiber that makes daily feel daily.†

Clinically Studied.
More Energy. A Healthier Gut.*

When four prebiotic fiber sources meet modern research, the results speak for themselves.

10000mg
Prebiotic fiber per serving
70+ years
Of modern dietary fiber research
1900+
Participants studied across randomized fiber trials
1M+
Orders shipped