---
product_id: 4800629
title: "Undecylenic Acid (Formerly Formula SF722) - 250 mg of Undecylenic Acid - for a Healthy Balance of Gut & Vaginal Flora* - Gluten Free - 250 Gelcaps - 50 Servings"
brand: "thorne"
price: "A$118"
currency: AUD
in_stock: true
reviews_count: 8
category: "Thorne"
url: https://www.desertcart.com.au/products/4800629-undecylenic-acid-formerly-formula-sf722-250-mg-of-undecylenic-acid
store_origin: AU
region: Australia
---

# Gluten-Free & allergen-free formula 250 Gelcaps = 50 servings 250 mg Undecylenic Acid per capsule Undecylenic Acid (Formerly Formula SF722) - 250 mg of Undecylenic Acid - for a Healthy Balance of Gut & Vaginal Flora* - Gluten Free - 250 Gelcaps - 50 Servings

**Brand:** thorne
**Price:** A$118
**Availability:** ✅ In Stock

## Summary

> 🌟 Elevate your inner ecosystem — because thriving starts from within!

## Quick Answers

- **What is this?** Undecylenic Acid (Formerly Formula SF722) - 250 mg of Undecylenic Acid - for a Healthy Balance of Gut & Vaginal Flora* - Gluten Free - 250 Gelcaps - 50 Servings by thorne
- **How much does it cost?** A$118 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/4800629-undecylenic-acid-formerly-formula-sf722-250-mg-of-undecylenic-acid)

## Best For

- thorne enthusiasts

## Why This Product

- Trusted thorne brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Women’s Health Ally:** Maintains vaginal flora balance linked to gut health for holistic wellness
- • **Clean, Pure & Allergen-Free:** Gluten-free, dairy-free, soy-free, no artificial additives for mindful supplementation
- • **Trusted by Champions & Experts:** Preferred by 100+ pro sports teams & #1 clinical brand recommended in 2023
- • **Optimized Digestive & Immune Function:** Supports nutrient absorption, waste elimination & immune resilience
- • **Clinically Proven Gut & Vaginal Flora Support:** Science-backed 250 mg dose promotes balanced microbiome health*

## Overview

THORNE Undecylenic Acid delivers a potent 250 mg dose per capsule designed to maintain a healthy balance of gut and vaginal flora. Clinically supported and trusted by elite athletes and healthcare practitioners alike, this gluten-free, allergen-conscious formula promotes optimal gastrointestinal function, nutrient absorption, and immune health. With 250 gelcaps providing 50 servings, it’s a clean, effective choice for professionals seeking holistic wellness and microbiome balance.

## Description

Buy THORNE - Undecylenic Acid (Formerly Formula SF722) - 250 mg of Undecylenic Acid - for a Healthy Balance of Gut & Vaginal Flora* - Gluten Free - 250 Gelcaps - 50 Servings on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: This is a life saver! - I was diagnosed with systemic Candida after 2 decades of eating mostly fast food and having no idea what gut flora was or how it affects your health. I was given an anti fungal prescription by my doctor, but the Rx was also poisoned my liver when taken at dosages high enough to kill my overgrowth. I spent hours and hours reading about what to eat and what supplements kill Candida, but weren't harmful to my body. After reading about UA (Undecenoic Acid) and its use in WWI and WWII to cure fungal growth in service members, I tried it. The directions call for 5 capsules, 3 times daily which gives you about 3.5g of UA. The articles I read about our service members called for 7g/day for 30 days, so I rolled with that amount. I'm not recommending anyone else take that dose. I'm simply telling you my experience. Along with a completely clean diet of non-GMO, non-antibiotic chicken, turkey, sourdough bread, almonds and almond butter washed down with PH-balanced water, I took 30 capsules a day, 10 capsules 3 times a day. In about 3-4 days, I could feel a difference. My energy levels started to come back, my strength started to come back, my short term memory even improved. The brain fog I had suffered for months was leaving and after 3-4 weeks, belly fat started disappearing. My uncharacteristic depression that had taken hold of me on and off as a result of my systemic Candida was gone. I also had shortness of breath from the lining of Candida in my lungs and that, too, is gone. After being on the Rx for almost 90 days and having to get my blood tested every 3-4 weeks to check my liver's health, I stopped taking it after a week using the UA and haven't even missed it. Mind you, during that 3 months, I felt no improvements in any of the areas I listed and it was harming by body. After 30 days with Thorne UA, I was the me I remembered years from ago. Vibrant, physically and mentally healthy, and no die off symptoms at all. Anyone that has had to deal with Candida die-off knows how miserable the headaches and body aches can be. In the past, if I strayed from my strict diet at all, I always had die-off symptoms while on the Rx. Because the UA killed off most of my Candida and does a phenomenal job at keeping it at bay, I no longer have any die-off symptoms and can eat out with my family from time to time without worrying about being 'hungover' for the next 24-48 hours. I have been using Thorne UA for over 3 months now and am so grateful to them for making such a wonderful, safe product. I have learned so much about gut flora, healthy eating and nutrition, I am now enlightening health care professionals that used to just push their choice of Rx on their patients and are now sold on Thorne UA. I have talked with several people in the last 3-4 months that have similar symptoms to mine. I always recommend they get tested at their Dr's office to see if they do have Candida and if their Practitioner isn't aware of Candida (many aren't), educate them. The friends that have been diagnosed and have used Thorne UA all agree that it is a life saver.
Review: SF722 is amazing! I've had sinus pain - SF722 is amazing! I've had sinus pain,migraines, depression, anxiety, and brain fog for most of my life. Two years ago I began to be truly exhausted, it was all I could do just to work 8 hrs and could barely keep up with anything else. I had a severe case of angioadema, and later a sinus migraine which caused so much pain I was begging doctors to operate...I was desperate. They gave me antibiotics (Bactrim) which made me feel worse..didn't think that was possible, and of course loads of painkillers that didn't really work. I finally got some now brand NAC and took two capsules, in about 10 minutes the pain diminished to almost nothing. I cried a little. At the time I had no idea it was a fungal/yeast infection in my sinuses (broken nose in my 20s) that was producing acetaldehyde causing horrible migraines and fibromyalgia in my neck and shoulders along with periodontal disease and other issues. The NAC is a precursor for glutathione and it also contained molybdenum and selenium. These are substances which allow your body to break down acetaldehyde (look up acetaldehyde - explains a lot). Pantethene, molybdenum, magnesium, Sulforaphane, liposomal vitamin c, and liposomal glutathione - both from seeking health (only brand of liposomals that worked for me so far) all break down acetaldehyde and support healing. Quercetin, a powerful antioxidant, is also extremely helpful for die off symptoms. It stabilizes mast cells to prevent histamine release wich is another byproduct of acetaldehyde. I also had a genetics panel done by 23andme and discovered I am homozygous for one of two major methylation genes 677 - I also had my doctor test me (insurance paid for it) to confirm it. It is estimated that 40 to 50 percent of the population has some degree of this genetic condition that causes so many problems, yeast overgrowth being one. Dr. Ben Lynch and Amy Yasko have websites regarding this. This is also a big deal because your body can't use vitamin b9 (folate) and needs the methylated version. Do your research before taking methylated b9...it can cause serious reactions in some people. My blood was very thick because of this which caused extreme fatigue. I was also b12 deficient which my blood tests didn't show correctly. What does all this have to do with sf722? It's all interrelated; yeast overgrowth, vitamin deficiencies, sluggish liver from toxin overload, hormonal imbalances, insulin imbalance, blood pressure too high or too low...the list goes on and on. Sf722 and the candida diet worked immediately to improve my sinuses and other issues. I research all these subjects relentlessly because your health and wellbeing is about taking responsibility for the state of your body and making it a personalized journey.

## Features

- Science Backed: Clinically shown to be effective in maintaining a healthy balance of gastrointestinal and vaginal flora*
- GI Support: Promotes optimal functioning of the GI tract and is vital to the absorption of nutrients, the elimination of waste, and proper immune function*
- Women’s Health: In women's health, the relationship of a healthy balance of gut flora has benefits for healthy vaginal flora*
- GI Balance: Undecylenic Acid helps maintain a healthy balance of flora in the GI tract that can be out of balance due to an unhealthy diet, inadequate digestive enzymes, oral contraceptive use, or taking prescription and OTC drugs*
- Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000FGXMWC |
| Age Range Description | Adult |
| Allergen Information | Dairy Free, Fish Free, Shellfish Free, Soy Free |
| Best Sellers Rank | #21,891 in Health & Household ( See Top 100 in Health & Household ) #692 in Blended Vitamin & Mineral Supplements |
| Brand | THORNE |
| Brand Name | THORNE |
| Color | Pale Yellow |
| Container Type | Bottle |
| Customer Reviews | 4.4 out of 5 stars 1,768 Reviews |
| Dosage Form | Capsule |
| Flavor | Unflavored |
| Global Trade Identification Number | 00693749722014 |
| Item Dimensions | 2.58 x 2.58 x 4.94 inches |
| Item Form | Capsule |
| Item Weight | 0.25 Grams |
| Manufacturer | Thorne Research |
| Material Features | Egg Free, Fish Free, Gluten Free, Lactose Free, No Artificial Colors, No Artificial Flavors, No Artificial Preservatives, Nut Free, Yeast Free |
| Model Name | SF722 |
| Number of Items | 1 |
| Primary Supplement Type | Magnesium |
| Total Servings Per Container | 50 |
| UPC | 885522498913 885224378537 885139143411 693749722014 |
| Unit Count | 250 Count |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** THORNE
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Item Weight:** 0.25 Grams
- **Item dimensions L x W x H:** 2.58 x 2.58 x 4.94 inches
- **Number of Items:** 1
- **Package Information:** Bottle
- **Primary Supplement Type:** Magnesium
- **Unit Count:** 250 Count

## Images

![Undecylenic Acid (Formerly Formula SF722) - 250 mg of Undecylenic Acid - for a Healthy Balance of Gut & Vaginal Flora* - Gluten Free - 250 Gelcaps - 50 Servings - Image 1](https://m.media-amazon.com/images/I/61v6fpKJYBL.jpg)

## Questions & Answers

**Q: I'm finding it is almost impossible to avoid yeast in my diet.  It seems like it an ingredient in almost everything.  Any helpful hints will be apprec**
A: In my experience, candida can eat any carbohydrate but prefers sugar. The fungal form can also eat fat. Yeast in the diet is irrelevant, as long as it is dead yeast. Kombucha should be avoided, as it can contain wild strains of live candida. A low carb, low fat diet based on lean meat and and non-starchy vegetables is best. The root cause of candida overgrowth is zinc deficiency. Until you solve that problem any other treatment will only give temporary results.

**Q: How many mg per capsule? And do you have a product with DMSA?**
A: DMSA is available as non-prescription, however, because of a lawsuit involving DMSA most manufacturers have quietly stopped selling it.  You can still get it via prescription or search online for Suisse Pharma brand.  To clarify for others who read this:  DMSA is for metals detox, SF722 is typically used for candida.  It is common for both issues to occur together.

**Q: Is this the one that contains Undecylenic Acid? There is another item called undecyn which says it contains that but the ingredient list does not show**
A: Yes, this product does contain Undecylenic acid; it's listed on the label as 10-decanoic acid, which is the same thing. The product called Undecyn contains calcium undecylenate, which is the salt of undecylenic acid.

**Q: Does this need to be refrigerated?**
A: No, it doesn't need to be refrigerated.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This is a life saver!
*by T***N on May 17, 2018*

I was diagnosed with systemic Candida after 2 decades of eating mostly fast food and having no idea what gut flora was or how it affects your health. I was given an anti fungal prescription by my doctor, but the Rx was also poisoned my liver when taken at dosages high enough to kill my overgrowth. I spent hours and hours reading about what to eat and what supplements kill Candida, but weren't harmful to my body. After reading about UA (Undecenoic Acid) and its use in WWI and WWII to cure fungal growth in service members, I tried it. The directions call for 5 capsules, 3 times daily which gives you about 3.5g of UA. The articles I read about our service members called for 7g/day for 30 days, so I rolled with that amount. I'm not recommending anyone else take that dose. I'm simply telling you my experience. Along with a completely clean diet of non-GMO, non-antibiotic chicken, turkey, sourdough bread, almonds and almond butter washed down with PH-balanced water, I took 30 capsules a day, 10 capsules 3 times a day. In about 3-4 days, I could feel a difference. My energy levels started to come back, my strength started to come back, my short term memory even improved. The brain fog I had suffered for months was leaving and after 3-4 weeks, belly fat started disappearing. My uncharacteristic depression that had taken hold of me on and off as a result of my systemic Candida was gone. I also had shortness of breath from the lining of Candida in my lungs and that, too, is gone. After being on the Rx for almost 90 days and having to get my blood tested every 3-4 weeks to check my liver's health, I stopped taking it after a week using the UA and haven't even missed it. Mind you, during that 3 months, I felt no improvements in any of the areas I listed and it was harming by body. After 30 days with Thorne UA, I was the me I remembered years from ago. Vibrant, physically and mentally healthy, and no die off symptoms at all. Anyone that has had to deal with Candida die-off knows how miserable the headaches and body aches can be. In the past, if I strayed from my strict diet at all, I always had die-off symptoms while on the Rx. Because the UA killed off most of my Candida and does a phenomenal job at keeping it at bay, I no longer have any die-off symptoms and can eat out with my family from time to time without worrying about being 'hungover' for the next 24-48 hours. I have been using Thorne UA for over 3 months now and am so grateful to them for making such a wonderful, safe product. I have learned so much about gut flora, healthy eating and nutrition, I am now enlightening health care professionals that used to just push their choice of Rx on their patients and are now sold on Thorne UA. I have talked with several people in the last 3-4 months that have similar symptoms to mine. I always recommend they get tested at their Dr's office to see if they do have Candida and if their Practitioner isn't aware of Candida (many aren't), educate them. The friends that have been diagnosed and have used Thorne UA all agree that it is a life saver.

### ⭐⭐⭐⭐⭐ SF722 is amazing! I've had sinus pain
*by J***T on June 4, 2016*

SF722 is amazing! I've had sinus pain,migraines, depression, anxiety, and brain fog for most of my life. Two years ago I began to be truly exhausted, it was all I could do just to work 8 hrs and could barely keep up with anything else. I had a severe case of angioadema, and later a sinus migraine which caused so much pain I was begging doctors to operate...I was desperate. They gave me antibiotics (Bactrim) which made me feel worse..didn't think that was possible, and of course loads of painkillers that didn't really work. I finally got some now brand NAC and took two capsules, in about 10 minutes the pain diminished to almost nothing. I cried a little. At the time I had no idea it was a fungal/yeast infection in my sinuses (broken nose in my 20s) that was producing acetaldehyde causing horrible migraines and fibromyalgia in my neck and shoulders along with periodontal disease and other issues. The NAC is a precursor for glutathione and it also contained molybdenum and selenium. These are substances which allow your body to break down acetaldehyde (look up acetaldehyde - explains a lot). Pantethene, molybdenum, magnesium, Sulforaphane, liposomal vitamin c, and liposomal glutathione - both from seeking health (only brand of liposomals that worked for me so far) all break down acetaldehyde and support healing. Quercetin, a powerful antioxidant, is also extremely helpful for die off symptoms. It stabilizes mast cells to prevent histamine release wich is another byproduct of acetaldehyde. I also had a genetics panel done by 23andme and discovered I am homozygous for one of two major methylation genes 677 - I also had my doctor test me (insurance paid for it) to confirm it. It is estimated that 40 to 50 percent of the population has some degree of this genetic condition that causes so many problems, yeast overgrowth being one. Dr. Ben Lynch and Amy Yasko have websites regarding this. This is also a big deal because your body can't use vitamin b9 (folate) and needs the methylated version. Do your research before taking methylated b9...it can cause serious reactions in some people. My blood was very thick because of this which caused extreme fatigue. I was also b12 deficient which my blood tests didn't show correctly. What does all this have to do with sf722? It's all interrelated; yeast overgrowth, vitamin deficiencies, sluggish liver from toxin overload, hormonal imbalances, insulin imbalance, blood pressure too high or too low...the list goes on and on. Sf722 and the candida diet worked immediately to improve my sinuses and other issues. I research all these subjects relentlessly because your health and wellbeing is about taking responsibility for the state of your body and making it a personalized journey.

### ⭐⭐⭐⭐⭐ Truly Outstanding for Fungal Infections!
*by K***. on August 8, 2025*

If you’re new to dealing with fungal infections, listen up—Thorne Undecylenic Acid is legit and can really help clear things up. Here’s what I learned after trying it: First, consistency is key. Take it daily as directed, don’t skip days, or you’ll slow your progress. Second, be patient—it might take a couple of weeks before you notice real improvement, but trust the process. Third, keep your affected areas clean and dry; this supplement works best when you help your body out with good hygiene. This formula is high quality—no weird fillers or harsh stuff—so it’s easy on your stomach but tough on fungus. If you’re serious about beating fungal infections, this should be in your toolkit.

## Frequently Bought Together

- THORNE Undecylenic Acid (Formerly Formula SF722) - 250 mg of Undecylenic Acid - for a Healthy Balance of Gut & Vaginal Flora* - Gluten Free - 250 Gelcaps - 50 Servings
- Klaire Labs Interfase Plus - Enzyme Combination to Disrupt biofilm Matrix + EDTA - Gastrointestinal System, Gut Flora, Biofilm & Detox Support (60 Capsules)
- Kirkman - Biofilm Defense Disruptor and Buster - W/Lipase and Glucoamylase - Enzymes for Digestion for Men and Women - Protects Immune System - 60 Supplement Capsules

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-05*