Mixing a scoop of Ageless Multi Fiber into a glass of water
BioTRUST

Eating less? Your gut still needs its fiber.

GLP-1 medications reduce how much you eat — and fiber intake often drops right along with it. Constipation is the most common GI side effect people report. Ageless Multi Fiber™ is designed to support digestive comfort during reduced-calorie eating, and help fill nutritional gaps when appetite is reduced.

Shop now
Try it Risk-Free for 60 Days
GLP-1 Friendly - one scoop, every day helps fill the fiber gap when appetite is reduced
Designed to Support Every Phase of Your Wellness Journey

Ageless Multi Fiber™

30 Servings
per canister
Tropical Citrus
Naturally Flavored
6g fiber
per serving
  • Clinically dosed Solnul® resistant starch
  • Supports gut barrier function and regularity
  • Gentle and non-bloating enough for daily use
  • Naturally sweetened - mixes into water, juice, or a smoothie
Save up to 40% and get FREE shipping:
BEST VALUE
3 Pack Save 40% $23.99/mo $39.99
3-month supply delivered every 3 months $0.80/day
  • Free shipping today and on every subscription order
  • Skip, pause or cancel anytime
  • 60-Day Money-Back Guarantee
2 Pack Save 35% $25.99/mo $39.99
2-month supply delivered every 2 months $0.87/day
  • Free shipping today and on every subscription order
  • Skip, pause or cancel anytime
  • 60-Day Money-Back Guarantee
1 Pack Save 30% $27.99/mo $39.99
30-day supply delivered every month $0.94/day
  • Free shipping today and on every subscription order
  • Skip, pause or cancel anytime
  • 60-Day Money-Back Guarantee
Less than 1% of customers use our Money-Back Guarantee

“Ageless Multi Fiber isn't just about getting more fiber—it's about delivering the right fibers, at clinically meaningful doses, to support gut health, metabolic health and healthy aging.”

Tim Skwiat
Tim Skwiat
Chief Nutrition Officer
Is This For You?

If you check any of these boxes, this is for you...

  • Your appetite or portions have changed recently, for any reason — including GLP-1 medication
  • You're dealing with more constipation or irregularity than usual
  • You're not sure you're still getting enough fiber from what you eat
  • You want something gentle, clinically studied, and easy to mix
Benefits
  • Supports digestive health and regularity
  • Feeds beneficial gut bacteria and supports a healthy microbial balance
  • Supports healthy stool consistency
  • Provides a clinical dose of resistant starch, one of the most under-consumed fiber types
  • Supports metabolic health
  • Supports nutrient absorption
  • Gentle enough for daily use, formulated to minimize bloating
  • Supports digestive comfort for GLP-1 users and adults 40+
  • Naturally sweetened, no artificial sweeteners, Tropical Punch flavor
  • Mixes smoothly with no gritty texture
  • Easy to incorporate into your daily routine, just one scoop
Recommended Usage
Mix 1 scoop (9.9g) with 8 oz of cold water or your favorite cold beverage. Can also be added to smoothies or yogurt. Do not heat above 140°F.
Full Ingredients
  • Solnul® Resistant Potato Starch (RS2)
  • PHGG (Partially Hydrolyzed Guar Gum)
  • Acacia Gum
  • Oat Fiber
  • FIBRISS® Organic Baobab
  • Citrus Pectin

You don't have to take our word for it.

Hear directly from people who added Ageless Multi Fiber™ to their routine, in their own words.

Eating Less = Less Fiber

When your appetite changes, fiber is often the first thing to go.

Fiber is already one of the most under-consumed nutrients in the average diet.
Most people fall short even eating normally.

When food intake drops, that gap widens fast, and resistant starch intake can fall to almost nothing. Your gut microbiome doesn't need less fiber just because you're eating less overall, it needs it consistently, scoop after scoop.

Americans don't get enough fiber to begin with.
Let alone on a GLP-1.

of Americans don't get
enough fiber to begin with
Resistant starch shortfall
vs the daily target
Ageless Multi Fiber canister with scoop, citrus, and pineapple

The 6 Fiber System
Chosen for sensitive stomachs.

If your stomach's already sensitive, the last thing you need is a fiber supplement that makes it worse. Every ingredient here was chosen with that in mind.

<span class="whitespace-nowrap">Solnul® Resistant Potato Starch</span>
Solnul® Resistant Potato Starch
Non-bloating, clinically studied, even at a full clinical dose.
PHGG
PHGG
Ferments slowly, for minimal gas.
Acacia Gum
Acacia Gum
Built for sensitive digestive systems.
Oat Fiber
Oat Fiber
Adds bulk without aggression.
Organic Baobab (FIBRISS®)
Organic Baobab (FIBRISS®)
Low-FODMAP, organic, gentle by nature.
Citrus Pectin
Citrus Pectin
Soluble, gently fermented, easy on the gut.

Not a laxative. Not a cleanse.
A daily fiber system, built to be gentle enough for every single day.

Woman drinking a glass of Ageless Multi Fiber
THE CLINICAL DATA

The proof behind the gentle formula

Clinically studied and proven for consistent digestive comfort, even when everything else about how you're eating has changed.

+238%
More
Akkermansia
+215%
More
Bifidobacterium
-60%
Fewer hard,
lumpy stool events
Zero
Watery stool events
Tim Skwiat, Chief Nutrition Officer, on Ageless Multi Fiber
Consistent gut support, no matter how your appetite changes.

Ageless Multi Fiber™

30 Servings
per canister
Tropical Citrus
Naturally Flavored
6g fiber
per serving
Save up to 40% and get FREE shipping:
BEST VALUE
3 Pack Save 40% $23.99/mo $39.99
3-month supply delivered every 3 months $0.80/day
  • Free shipping today and on every subscription order
  • Skip, pause or cancel anytime
  • 60-Day Money-Back Guarantee
2 Pack Save 35% $25.99/mo $39.99
2-month supply delivered every 2 months $0.87/day
  • Free shipping today and on every subscription order
  • Skip, pause or cancel anytime
  • 60-Day Money-Back Guarantee
1 Pack Save 30% $27.99/mo $39.99
30-day supply delivered every month $0.94/day
  • Free shipping today and on every subscription order
  • Skip, pause or cancel anytime
  • 60-Day Money-Back Guarantee
Less than 1% of customers use our Money-Back Guarantee

Frequently asked questions

I'm on a GLP-1 medication – is this for me?
Yes. GLP-1 medications often help you feel fuller sooner and eat less. That can support your weight goals, but eating less usually means less fiber, widening a gap most people already have. Ageless Multi Fiber was designed for exactly that situation: six fibers, including a clinical dose of Solnul® resistant starch, gentle enough to take every single day.
What is Ageless Multi Fiber?
Ageless Multi Fiber is a next-generation, healthspan-focused fiber supplement designed to help fill two of the most overlooked nutritional gaps in modern diets: dietary fiber and resistant starch. Each serving delivers 6 grams of dietary fiber from a strategically designed blend of soluble fiber, insoluble fiber, resistant starch, and naturally occurring polyphenols.

Powered by clinically studied Solnul® resistant potato starch and supported by complementary fibers, Ageless Multi Fiber supports digestive health, regularity, gut microbiome balance, metabolic health, and healthy aging.

Rather than relying on a single fiber source, Ageless Multi Fiber delivers a diversified fiber system designed to support the body through multiple complementary mechanisms.
What Does Ageless Multi Fiber Do?
Ageless Multi Fiber helps support digestive health, regularity, gut microbiome diversity, metabolic wellness, and healthy aging by delivering multiple types of fiber that perform different functions within the body. The formula works by:

• Feeding beneficial gut bacteria
• Supporting healthy microbial balance
• Promoting digestive regularity
• Supporting healthy stool consistency
• Providing fermentable substrate for short-chain fatty acid (SCFA) production
• Supporting gut barrier function
• Helping promote satiety and fullness
• Helping fill widespread fiber and resistant starch gaps

Unlike many fiber products that focus on a single mechanism, Ageless Multi Fiber supports the entire gut health cascade—from prebiotic activity to postbiotic production to digestive regularity.
What are the ingredients in Ageless Multi Fiber and what do they do?
Ageless Multi Fiber contains six carefully selected ingredients that provide complementary forms of fiber and gut health support:

Solnul® Resistant Potato Starch: A clinically studied type 2 resistant starch that acts as a prebiotic fiber. Solnul® has been shown to support beneficial bacteria such as Bifidobacterium and Akkermansia, healthy stool patterns, gut barrier function, nutrient absorption, and metabolic health.
Partially Hydrolyzed Guar Gum (PHGG): A gentle, soluble, fermentable fiber that supports digestive comfort, regularity, and microbiome balance.
Acacia Gum: A well-tolerated soluble prebiotic fiber that helps nourish beneficial bacteria while supporting digestive health.
Oat Fiber: A predominantly insoluble fiber that supports stool bulk, intestinal transit, and healthy bowel function.
FIBRISS® Organic Baobab Fruit Powder: Provides soluble fiber, insoluble fiber, and naturally occurring polyphenols that support microbiome diversity and digestive wellness.
Citrus Pectin: A soluble, fermentable fiber that complements the microbiome-supporting benefits of the formula and contributes additional polyphenols.

Together, these ingredients provide a diversified fiber system designed to support digestive and overall health from multiple angles.
How quickly will I see benefits?
The timeline can vary depending on the individual and the benefit being evaluated. Many people notice improvements in digestive regularity and stool consistency within the first several days of consistent use. Benefits related to the gut microbiome may take longer to develop because beneficial bacteria need time to respond to changes in fiber intake.

In clinical studies, participants consumed Solnul® resistant potato starch daily for four weeks, during which researchers observed significant improvements in beneficial gut bacteria and markers related to digestive and metabolic health. For best results, Ageless Multi Fiber should be taken consistently every day as part of a healthy diet and lifestyle.
Who would benefit most from Ageless Multi Fiber?
Ageless Multi Fiber may be beneficial for virtually anyone looking to increase their fiber intake and support digestive health. It may be especially helpful for:

• Adults 40+
• Individuals who consume relatively few fruits, vegetables, legumes, or whole grains
• People looking to support digestive regularity
• Individuals interested in supporting their gut microbiome
• Those seeking a diversified fiber supplement rather than a single-fiber product
• People looking to increase resistant starch intake
• Individuals using GLP-1 medications who may be consuming less dietary fiber as a result of reduced food intake

Because fiber needs vary from person to person, please consult your healthcare provider if you have specific medical concerns.
What specifically makes Ageless Multi Fiber different from other fiber supplements?
Several things set Ageless Multi Fiber apart:

1) Fiber Diversity

Most fiber supplements rely on a single fiber source, such as psyllium husk. Ageless Multi Fiber combines:

• Soluble fiber
• Insoluble fiber
• Resistant starch
• Fermentable fibers
• Naturally occurring polyphenols

This allows the formula to support multiple aspects of digestive and gut health simultaneously.

2) Clinically Studied Resistant Starch

Ageless Multi Fiber includes 3.5 grams of Solnul® resistant potato starch, a clinically studied ingredient shown to support beneficial bacteria, healthy stool patterns, gut barrier function, and metabolic health.

3) Supports More Than Regularity

While many fiber products focus primarily on bowel movements, Ageless Multi Fiber was designed to support:

• Digestive health
• Microbiome diversity
• Gut barrier function
• Nutrient absorption
• Metabolic health
• Healthy aging

4) Gentle Daily Use

The formula includes well-tolerated fibers such as Solnul®, PHGG, and acacia gum, making it suitable for consistent daily use.
Will Ageless Multi Fiber make me bloated?
Ageless Multi Fiber was intentionally formulated to be gentle and well tolerated. Many fiber supplements rely heavily on a single fiber source or rapidly fermenting fibers, which can sometimes lead to bloating, gas, or digestive discomfort—especially when consumed in large amounts or introduced too quickly. Ageless Multi Fiber takes a different approach by combining:

• Clinically studied Solnul® resistant potato starch
• Partially hydrolyzed guar gum (PHGG)
• Acacia gum
• Oat fiber
• Baobab fiber
• Citrus pectin

These fibers were selected not only for their benefits, but also for their digestive tolerance.

In clinical research, Solnul® resistant starch was shown to be well tolerated and did not increase reports of:

• Bloating
• Gas
• Abdominal discomfort
• Belching
• Nausea

That said, anytime fiber intake is increased, some individuals may experience temporary digestive changes as the gut microbiome adapts. For those who currently consume very little fiber, starting with a partial serving and gradually increasing to a full serving may help improve tolerance.
Can Ageless Multi Fiber help with occasional constipation?
Yes. Fiber is one of the most important nutrients for supporting healthy bowel function and regularity. Ageless Multi Fiber contains multiple types of fiber that support healthy digestion through complementary mechanisms:

• Insoluble fibers help provide stool bulk.
• Soluble fibers help support digestive wellness and microbial balance.
• Resistant starch helps nourish beneficial gut bacteria and support healthy stool patterns.

Clinical research on Solnul® resistant starch demonstrated improvements in constipation-associated stool patterns, helping support more normal bowel function.

For best results, Ageless Multi Fiber should be used consistently and consumed with adequate fluid intake.
Are there any side effects?
Ageless Multi Fiber is generally well tolerated when used as directed. As with any fiber supplement, increasing fiber intake may lead to temporary digestive changes in some individuals, particularly those who currently consume very little fiber. Potential temporary effects may include:

• Increased bowel activity
• Changes in stool frequency
• Mild gas
• Mild bloating during the adjustment period

These effects are typically temporary and often improve as the digestive system adapts. The fibers in Ageless Multi Fiber were selected in part because of their favorable digestive tolerance profile compared to many traditional fiber supplements.
Is Ageless Multi Fiber a good option for people using GLP-1 medications?
Yes. Ageless Multi Fiber may be an excellent option for individuals using GLP-1 medications who are looking to support their fiber intake, digestive health, gut microbiome, and overall wellness. GLP-1 medications often help people feel fuller sooner and consume less food. While this can support weight-management goals, it may also result in lower intake of important nutrients—including fiber.

Because fiber plays a critical role in digestive health, regularity, microbiome balance, satiety, and metabolic health, consuming less food can make an already significant fiber gap even larger. Ageless Multi Fiber was designed to help address this challenge by providing 6 grams of dietary fiber from a diversified blend of:

• Soluble fiber
• Insoluble fiber
• Resistant starch
• Naturally occurring polyphenols

This diversified approach supports multiple aspects of digestive and gut health rather than relying on a single type of fiber.
How should I take Ageless Multi Fiber?
Mix one serving daily with water or your favorite cold beverage and consume as directed. Ageless Multi Fiber can be taken at any time of day. Many customers prefer taking it in the morning as part of their daily wellness routine, but consistency is more important than timing.

We do not recommend mixing Ageless Multi Fiber into hot beverages or foods that exceed approximately 140°F (60°C). Ageless Multi Fiber contains resistant starch, which is valued for its ability to resist digestion in the small intestine and reach the colon intact.

Exposure to high temperatures may alter the structure of resistant starch and reduce some of its unique prebiotic properties and benefits. For best results, mix Ageless Multi Fiber into cold or room-temperature beverages, smoothies, yogurt, or other cool foods.
How many servings are in a container?
Each container of Ageless Multi Fiber contains 30 servings when used as directed. For most customers, this provides approximately a one-month supply. Each serving is 9.9g, and each container contains 297g.
Is Ageless Multi Fiber gluten-free, vegan, and non-GMO?
Yes. Ageless Multi Fiber is:

• Gluten-free
• Vegan-friendly
• Non-GMO

These attributes make it suitable for a wide range of dietary preferences and lifestyles. Ageless Multi Fiber is both vegan- and vegetarian-friendly. It contains no animal-derived ingredients and is made with plant-based ingredients.
Are there any allergy concerns?
Ageless Multi Fiber contains ingredients derived from:

• Potato
• Guar
• Acacia
• Oats
• Baobab fruit
• Citrus fruit

The product is manufactured in a facility that also processes egg, milk, soy, fish, sesame, crustacean shellfish, peanuts, tree nuts, and wheat. Individuals with known sensitivities to any ingredient should review the label carefully before use. As with any dietary supplement, customers who are pregnant, nursing, taking medication, or managing a medical condition should consult their healthcare provider before use.
What are the ingredients and amounts used in Ageless Multi Fiber?
Default Title