Formerly known as Formula SF722
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.
Benefits of Thorne’s Undecylenic Acid:
• Promotes optimal functioning of the gastrointestinal tract.*
• 7 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.
Best For
Undecylenic Acid 250 gelcaps is best for everyday wellness, nutritional gaps, and whole-body health support. It is especially well-suited for individuals seeking a professional, practitioner-vetted supplement as part of a holistic wellness routine.
How to Use
Take as directed on the label or by your healthcare practitioner. Always follow the label directions or guidance from your healthcare provider. Do not exceed the recommended dose.
Frequently Asked Questions
- Is Undecylenic Acid 250 gelcaps third-party tested? All products at Healthy Solutions For All meet practitioner-grade standards for purity and potency.
- Who recommends this product? Undecylenic Acid 250 gelcaps is curated by Michelle Tonkin ND and Melissa Tonkin CNC, twin sisters with 20+ years of holistic clinical experience.
- Can I get personalized guidance? Yes — book a free 10-minute consultation to find out if this product is right for your health goals.
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.

