Isagenix Expands Microbiome Innovation Portfolio with WITHIN™, a 5-in-1 Daily Gut-Immune Support System

Gilbert, Arizona Aug 18, 2026 (Issuewire.com) - Isagenix International, a global leader in health and wellness, today announced the official launch of WITHIN, an advanced 5-in-1 daily supplement designed to support the interconnected body systems behind digestion, immune health, physical recovery, and overall wellness.

WITHIN launches as part of Isagenix's next phase of wellness innovation and marks a major expansion of the company's microbiome and immune health portfolio. Developed for more informed, selective consumers looking beyond occasional digestive symptom support and basic probiotics, WITHIN brings five complementary wellness components together in one streamlined formula customers can feel confident using and proud to share.

Each serving includes a 200 mg dose of effera® human-equivalent lactoferrin, 1 g of premium grass-fed bovine colostrum, 3 g of prebiotics, 8 billion CFU probiotics, and postbiotics selected to help support foundational wellness. WITHIN is developed under Isagenix's No-Compromise Quality commitment, a rigorous approach that begins with verified ingredient sourcing and continues through purity, potency, and finished-product testing designed to meet and exceed required quality standards.

"In a marketplace full of noise, consumers deserve products grounded in science, built with purpose, and designed to make a significant difference in daily wellness," said Sharron Walsh, Chief Executive Officer of Isagenix. "WITHIN represents the best of Isagenix innovation, bringing together advanced microbiome science and a sophisticated formulation approach to set a higher standard for daily wellness."

Powered by a Breakthrough in Lactoferrin Science

Lactoferrin is a multifunctional protein naturally found in the body that plays an important role in immune balance, iron utilization, microbiome health, and a healthy inflammatory response. WITHIN delivers a meaningful 200 mg dose per serving through effera® lactoferrin, giving up to 25 times more lactoferrin than traditional colostrum products.*

effera® is the world's first bio-identical, human-equivalent lactoferrin, developed through precision fermentation by biotechnology company Helaina. Inspired by lactoferrin naturally found in human milk, effera® is designed for biological alignment, meaning it is made to be recognized by the body and function like the native protein the body understands. Helaina's lactoferrin has also drawn industry attention through a strategic innovation partnership with Nestlé.

"By selecting human-equivalent lactoferrin and pairing it with colostrum and a complete tribiotic system, we are not chasing trends," Walsh added. "We are taking a disciplined approach to formulation, combining ingredients chosen to work together as a complete system."

Five Components. One Daily Foundation.

The formula combines:

• effera® lactoferrin (200 mg): Human-equivalent protein supporting immune health, nutrient utilization, and a balanced inflammatory response.
• Grass-Fed Colostrum (1 g): Cold-processed, responsibly sourced bovine colostrum delivering essential immunoglobulins (IgG) and growth factors for digestive support and physical recovery.
• Prebiotics (3 g): Dietary fiber that nourishes beneficial gut bacteria and supports microbiome diversity.
• Probiotics (8 Billion CFU): Targeted beneficial strains to promote gut balance, digestion, and regularity.
• Postbiotics: Heat-inactivated microorganisms that support gut barrier integrity and immune signaling.

"Over the past 24 years, Isagenix has demonstrated a deep understanding of the gut microbiome through clinical studies showing improvements with the 30-Day Reset," said Dr. Paul Arciero. "WITHIN builds on that expertise with a cutting-edge scientific combination of human-equivalent lactoferrin, colostrum, prebiotics, probiotics, and postbiotics. By incorporating breakthrough effera® lactoferrin, WITHIN delivers a science-led approach to supporting the gut microbiome, immune function, and the body's interconnected needs."

Designed for everyday consistency, WITHIN mixes easily into 8 ounces of water or a favorite beverage. It launches in a refreshing Passionfruit Guava flavor with clean, tropical notes and subtle sweetness.

WITHIN is available starting August 18, 2026, through thousands of Isagenix independent Associates and online at isagenix.com.

*25x comparison refers specifically to the lactoferrin content per gram vs. standard bovine colostrum.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Media Contact

Isagenix International, LLC

[email protected]

480-889-5747

155 E. Rivulon Blvd., Suite 101, Gilbert, AZ 85297

https://www.isagenix.com/