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Thorne Research, Formula SF722, 250 Gelcaps

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In Stock
  • Expiration Date: Aug 2018
  • Shipping Weight:
    0.53 lbs
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  • Product Code: THR-72201
  • UPC Code: 693749722014
  • Package Quantity: 250 Gelcaps
  • Dimensions:
    2.6 x 2.6 x 5 in, 0.45 lbs
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Product Overview


  • Dietary Supplement
  • Thorne's Innovative Approach for Healthy Gut Flora
  • Six Times More Effective Than Caprylic Acid
  • Maintains Healthy Vaginal Flora
  • One of our Best Selling Products for over 20 Years

Undecylenic acid - potent fatty acid support of healthy gut and vaginal flora

Optimal gastrointestinal tract functioning is vital to the absorption of nutrients, elimination of waste, and proper immune function. Many health-care practitioners consider gut function and especially good gut ecology – maintaining a healthy balance of gut flora, the microorganisms that normally live in the digestive tract – to be a key component to overall health. Many situations can contribute to an imbalance in the microbial flora of the digestive tract, including an unhealthy diet, inadequate digestive enzymes, oral contraceptives, and the use of various prescription and OTC drugs. Increasing recognition is also being given in women's health to the relationship between gut flora and vaginal flora; i.e., a healthy balance of gut flora has corresponding benefit to the vaginal flora.

Fatty acids have been used for centuries to help maintain a healthy balance of the microorganisms that normally live in the gastrointestinal tract. In the last 50 years, fatty acids have demonstrated effectiveness in supporting a healthy gut flora in a number of studies.

Undecylenic acid (10-undecenoic acid) is an eleven-carbon, mono-unsaturated fatty acid occurring naturally in the body's perspiration. While several fatty acids have beneficial effects on the flora that naturally inhabit the gastrointestinal tract, undecylenic acid is the most potent.

A Thorne Research innovation, Formula SF722 contains undecylenic acid in a base of pure, extra-virgin olive oil. Formula SF722 aids in the establishment of healthy gut and vaginal flora and has been one of Thorne Research's best-selling products for over two decades.

Suggested Use

Take 5 gelcaps two to three times daily or as recommended by your health-care practitioner.

Other Ingredients

Extra virgin olive oil, gelatin (bovine), purified water and glycerin (vegetable source) gelcap.


Tamper Evident: Use only if bottle is sealed.

If pregnant, consult your health-care practitioner before using this product.

Store tightly sealed in a cool, dry place.

Supplement Facts
Serving Size: Five Gelcaps
Serving Per Container: 50
Five Gelcaps Contain: Amount Per Serving %Daily Value
10-Undecenoic Acid 250 mg *

*Daily Value (DV) not established

iHerb Customer Reviews

Not working for me

Posted by 5649993872780156410 on Feb 11, 2017

I started to take this formulas dar for me is not working. It have no effect for me, I have insomnia.

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Strong reaction

Posted by 4988456001142384190 on Dec 21, 2016

(sorry for my english, I'm not na english speacker) It is the only thing that worked for recurring vaqginal candida. I was suffering for 6 months, had tried a lot of diferente products (probiotics, zend candida cleanse, candida balance, orégano oil, coconut oil, fish oil, vaginal suppositories with probiotics, homeopatic medication, glutamina, multigyn actigel, multigyn flora plus). It only stopped few weeks after I started to use Formula SF-722. The problem is that I had a strong reaction in skin and eyes. I suspected it was this formula and stopped taking the capsules. The rash and the irritation in my eyes stopped and the candida came back. Then I started taking the capsules again, and the reaction came. I decreased the dose for three capsules a day and I hope the reaction doesn't come again.

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Good but with a caveat

Posted by Reviewer1854340 on Dec 19, 2016

Although this helped me for quite a while to overcome issues with bacterial overgrowth in the intestines, I recently stopped taking it. Since stopping, I've felt much better. I was taking it for over 2 years. Castor bean oil, from which this is derived, has an estrogenic effect. Not good if you're a man, like me. So don't take this for too long!

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Posted by Reviewer1651746 on Dec 12, 2016

This product is amazing. i have been taking the maximum dose (5 caps 3x / day) and my tummy bloat and discomfort was gone within 1 week. There are no side effects. AWESOME product and I will be re-ordering!

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This product needs improvement

Posted by 5715424124926484160 on Dec 01, 2016

The product is difficult to take in case of damaged stomach mucosa. This problem might be corrected by adding some substances that would help the patients to tolerate it better.

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