“Actually really good”
I was expecting it to taste like a typical fiber drink, but the blue raspberry lemonade is actually really good.*
Made with clinically studied fibers to help support gut balance and digestive comfort, naturally.†



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.
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.
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.
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.
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.
Blue Fiber™ is your daily fiber drink, delivering 10g of prebiotic fiber from four complementary sources — with added protein, electrolytes, and zero sugar.
When four prebiotic fiber sources meet modern research, the results speak for themselves.
See what our customers are saying about Blue Fiber™.
Daily fiber support designed to do more than regularity. From gut support to steadier energy, here’s what Blue Fiber™ does every morning.
Four fiber sources. One morning scoop. Decades of published research behind every serving.
Your daily defense line.
Most of your immune system lives in your gut. Prebiotic fibers like inulin and acacia feed the beneficial bacteria that help keep it balanced and resilient.†
Healthy response, naturally supported.
When gut bacteria ferment prebiotic fiber they produce short-chain fatty acids, which support a healthy inflammatory response throughout the body.†
Gut health without bloat
Psyllium adds gentle bulk for regularity, while slow-fermenting acacia and resistant dextrin support digestive comfort without the gas and bloating harsher fibers can cause.†
Focused, not foggy
Soluble fiber slows how quickly sugar enters your bloodstream, supporting steady energy and focus through the day instead of spikes and crashes.†
U1 is built for daily use, not quick fixes. Here’s how things tend to shift once it’s part of your morning.
Real results. Clean formulas. Zero compromise.
If you’re not completely satisfied in your first 30 days, simply return your order for a full refund — no questions asked.
Your wellness matters — and so does theirs. Blue Fiber™ is safe, gentle, and made for the whole household.‡



I’ve tried other fiber powders before and hated the taste. This one is completely different.*
I’ve noticed I feel more comfortable day to day since making this part of my morning routine.*
Blue raspberry lemonade was the perfect flavor choice. I actually look forward to drinking it.*
I’ve been feeling noticeably better since I started using it regularly, and it’s so easy to stay consistent with.*
I’ve been drinking it before the gym and it’s an easy way to get my fiber in without feeling too full before I train.*
One of my students’ parents gifted this to me and I ended up loving it. It tastes great and now I keep it at school for busy days.*
I keep this at work now because it’s so easy to mix into water. Way more convenient than trying to plan fiber into every meal.*
The taste is what got me. I expected something chalky, but it’s actually really refreshing cold.*
I’ve been way more consistent with my fiber since getting this. I feel better overall and it’s easy to stick with.*
I got the Buy 3 + Get 2 Free Gifts option and I’m glad I did. The bundle felt like the best value and now I’m stocked up.*