Undecylenic Acid
Fatty acid support for a healthy balance of gut and vaginal flora*
Thorne’s Undecylenic Acid is a potent, clinically backed supplement designed to support a healthy balance of gut and vaginal flora, which plays a vital role in overall wellness.* Featuring one of the most effective fatty acids, it’s shown to be six times more powerful than caprylic acid in maintaining microbial balance.* With over 50 years of research and two decades as a best-seller, this formula remains a trusted choice for targeted support of the gastrointestinal and vaginal microbiome.*
Benefits of Thorne’s Undecylenic Acid:
- 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.
Take 5 gelcaps two to three times daily or as recommended by your health-care practitioner.
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, as it can be irritating to the oral mucosa.
Ingredient Amounts
Serving Size: 5 Gelcaps
Servings Per Container: 50
- Undecylenic Acid 250mg
- Other Ingredients: Extra Virgin Olive Oil, Gelatin (Bovine), Purified Water and Glycerin (Vegetable Source) Gel Cap




