Undecylenic Acid
Scored by the Formulate Research Team · Last reviewed May 2026
Overview: Thorne Undecylenic Acid
Fatty acid support for a healthy balance of gut and vaginal flora* The most potent of the fatty acids – clinically shown to be effective in maintaining a healthy balance of gastrointestinal and vaginal flora.*
Score Breakdown
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Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Undecylenic Acid | 750 mg |
Certifications & Testing
Other Ingredients
Extra Virgin Olive Oil, Gelatin (bovine), Purified Water and Glycerin (vegetable source) gelcap
Recommended Use
Take 5 gelcaps two to three times daily or as recommended by your health-care practitioner.
Warnings
ALLERGY WARNING This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. PREGNANCY If pregnant, consult your health-care practitioner before using this product. INTERACTIONS There are no known adverse interactions or contraindications at publication date. OTHER WARNINGS It is not recommended to remove the liquid from the capsule to take orally,
Frequently Asked Questions
What is Thorne Undecylenic Acid's Formulate score?
Thorne Undecylenic Acid scores 88 out of 100 (grade A) on Formulate's ingredient-level rubric, which weighs evidence quality, dose accuracy, bioavailability, transparency, safety, and manufacturing practices.
Is Thorne Undecylenic Acid worth it?
Thorne Undecylenic Acid scores 88/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Thorne Undecylenic Acid?
Each serving contains Undecylenic Acid (750 mg). Serving size: 5 Gelcaps. 50 servings per container.
How do I take undecylenic acid?
Take 5 gelcaps two to three times daily or as recommended by your health-care practitioner.
Who makes Undecylenic Acid?
Undecylenic Acid is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne Undecylenic Acid third-party tested?
Thorne lists the following certifications and testing for this product: NSF Certified, Gluten Free, Dairy Free, Soy Free, Thorne Verified, Natural Flavors, Natural Colors, GMP Certified.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.