Fatty acid support for a healthy balance of gut and vaginal flora*
The most potent of the fatty acids – clinically shown to help maintain a healthy gastrointestinal, dermal and vaginal microbiome.*
Undecylenic Acid is a powerful, plant-derived fatty acid that promotes optimal gut flora balance and supports women’s health.* Clinically proven to be six times more effective than caprylic acid, Thorne’s formula has been trusted for over 20 years to help restore microbial equilibrium, especially in individuals whose microbiota may be compromised by diet, stress, or medications.*
Why You’ll Love It
Supports healthy GI flora for digestive and immune health*
Helps maintain vaginal microbial balance in women*
Six times more effective than caprylic acid*
May also benefit skin clarity and reduce fungal overgrowth*
Long-standing practitioner favorite for microbiome support*
Undecylenic Acid
Take 5 gelcaps two to three times daily or as recommended by your health-care practitioner.
To guarantee purity and product integrity, every item is shipped directly from the manufacturer’s own facility, never from bulk distributors or third-party storage. Shipping is always free, and your order never changes hands unnecessarily.
Because each brand fulfills its own orders, delivery times may vary. We partner with best-in-class wellness brands, each with their own shipping schedules, and you’ll receive tracking as soon as your order is on its way.
Take the Formulai Quiz to activate personalized, science-backed insights on every product — helping you shop smarter and with confidence.
Shop Direct from Trusted Brands
Shop products that ship straight from our vetted brands. No third-party middleman involved.
Rewards That Reinforce Good Habits
Earn points every time you shop and turn consistency into savings.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
Choosing a selection results in a full page refresh.