Product Image
Product Image

Key Benefits

Suggested Use

Important Notices

• Promotes optimal functioning of the gastrointestinal tract.*

• Vital to the absorption of nutrients, the elimination of waste, and proper immune function.*

• In women's health, the relationship of a healthy balance of gut flora has corresponding benefits for vaginal flora.*

• Supplementing with Undecylenic Acid helps maintain a healthy balance of the microorganisms that live in the gastrointestinal tract that can be out of balance due to an unhealthy diet, inadequate digestive enzymes, oral contraceptive use, or taking various prescription and OTC drugs.*

• Six times more effective than caprylic acid.

Thorne

Undecylenic Acid

Maintaining a healthy balance of gut flora is a key component of overall health.* Studies going back 50 years demonstrate that fatty acids are effective in supporting a healthy gut flora.* The undecylenic acid in Thorne’s Undecylenic Acid is six times more effective than caprylic acid. Its efficacy has helped make this product one of Thorne's best-selling products for more than two decades.

Log In to see membership discount

Not A Hundred Member? Click Here to Explore Joining

Health and price guarantee

1

More payment options

Gut Flora Balance

Gut Flora Balance

Gut Flora Balance

Highly Potent Formula

HIPAA Compliant · CLIA Certified · CAP Accredited · Quest Diagnostics Partner · HSA/FSA Eligible

Sign up for the latest in personalized health, insights, and updates.

© 2026 Hundred. All rights reserved.

2 Embarcadero Center, Floor 8, San Francisco, CA 94111

HIPAA Compliant · CLIA Certified · CAP Accredited · Quest Diagnostics Partner · HSA/FSA Eligible

Sign up for the latest in personalized health, insights, and updates.

© 2026 Hundred. All rights reserved

2 Embarcadero Center, Floor 8, San Francisco, CA 94111

HIPAA Compliant · CLIA Certified · CAP Accredited · Quest Diagnostics Partner · HSA/FSA Eligible

Sign up for the latest in personalized health, insights, and updates.

© 2026 Hundred. All rights reserved

2 Embarcadero Center, Floor 8, San Francisco, CA 94111