It keeps you regular
Psyllium soaks up water and forms a soft gel, so things move comfortably and consistently.*
725mg per capsule60-day supply
Daily foundation · Digestion & metabolic balance
BioFiber
Pure psyllium husk. 725mg per capsule.
- Supports healthy digestive regularity.*
- Prebiotic support for a healthy gut microbiome.*
- Supports healthy blood sugar and cholesterol levels already within normal range.*
- Supports gut barrier integrity through short-chain fatty acid production.*
Coming soon
Not available just yet.
This formula is in production. Leave your email and we will let you know the day it is ready.
Bloodwork panels are available now.
Why it matters
Why you need fiber
Most people eat far less fiber than their bodies are built for. It is one of the simplest gaps to close, and it reaches further into your health than most people expect.
It steadies your blood sugar
That same gel slows how quickly sugar from a meal reaches your bloodstream, so you avoid the spike and the slump.*
It feeds your gut
The good bacteria in your gut ferment fiber into compounds that nourish your gut lining.*
It supports healthy cholesterol
Fiber binds bile acids, which your body then rebuilds using cholesterol.*
Start with one serving, drink plenty of water, and build up over a week or two.
The evidence
One fiber, decades of evidence.
1,450
mg psyllium husk per serving725mg per capsule, two capsules daily
-
Steadier blood sugar
Psyllium forms a gel that slows how quickly glucose from a meal is absorbed.*
-
Healthy cholesterol
It binds bile acids, supporting cholesterol levels already within a normal range.*
-
A healthier gut
Fermented in the colon, it feeds beneficial bacteria and produces butyrate for your gut lining.*
Read the full research summary
BioFiber is formulated with 725mg of pure psyllium husk per capsule. At two capsules daily, each serving provides 1,450mg of psyllium husk in a clean, easy-to-swallow form.
Psyllium forms a viscous gel in the digestive tract that moderates post-meal glucose absorption, binds bile acids to support healthy cholesterol levels, and promotes consistent, comfortable elimination. As psyllium ferments in the colon, it nourishes beneficial bacterial populations and produces short-chain fatty acids, including butyrate, that support gut lining integrity and long-term microbiome health.
Psyllium forms a viscous gel in the digestive tract that moderates post-meal glucose absorption, binds bile acids to support healthy cholesterol levels, and promotes consistent, comfortable elimination. As psyllium ferments in the colon, it nourishes beneficial bacterial populations and produces short-chain fatty acids, including butyrate, that support gut lining integrity and long-term microbiome health.
Questions
Good to know.
When should I take it?
Any time that fits your routine. Many take it before a larger meal to blunt the glucose response, but consistency matters more than timing.
Will it cause bloating?
Soluble fiber is gentle, but adding fiber too quickly can cause temporary gas. Start with one capsule, drink plenty of water, and build up over a week or two.
The Rethryv Program
Ready for the whole picture?
Six months with one physician-led team. We start with your bloodwork, bring in everything about how you live, build your personalized Longevity Blueprint and guide you through it every day.
- 01Your bloodwork
- 02Your daily data
- 03Your Blueprint
- 04Guided every day
Explore the Program
Starting at $299/mo