Undecylenic Acid (Formula SF722)

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Undecylenic Acid (Formula SF722) from Thorne is one of the most powerful supplements against candida and fungal infections. Undecylenic Acid is six times more effective than caprylic acid. Undecylenic Acid also supports a healthy gut flora.

  • Pure undecylenic acid
  • 6 times more effective than caprylic acid against candida
  • Contributes to a healthy gut flora and vaginal flora
  • Tested from free of gluten, artificial fillers, dyes, and additives
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    250 capsules
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Undecylenic Acid (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 in fighting candida and other fungal infections. 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.
  • 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.


SF722 against Candida fights Candida albicans, Candida glabrata, Candida tropicalis, Candida parapsilosis and Candida krusei to name a few different candida strains. SF722 against Candida is also active against other Candida strains and other fungi. SF722 against Candida also contributes to maintaining a good vaginal flora free from fungi.

Unhealthy diets, antibiotics, cortisone and stress can affect the intestinal flora which can result in an overgrowth of candida and other fungi. Lauric acid, caprylic acid and undecanoic acid (Undecylenic acid) fight candida and fungi. Undecylenic acid is one of the most effective antifungal fatty acids known to man. 

Undecylenic acid found in SF722 against Candida also prevents morphogenesis in Candida Albicans, that is, going from a yeast form to a form of candida with hyphae - cell threads that form a network called mycelium.

To prevent and fight off fungal infections, combine Undecylenic Acid (Formula SF722) with Flora Plus+ and molybdenum and eliminate refined sugars, unhealthy vegetable oils, and fast food / junk food. 

For nail fungus or fungal infections between the toes: make a hole in the capsule and massage the oil onto the affected area, 3 times per day. Walk barefoot as much as possible and use only 100 % cotton socks.

Supplement Facts

Amount per serving (5 caps)   % of NRV
Undecylenic Acid 250 mg *

NRV = Nutrient Reference Value
*NRV not established

Other ingredients

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

Suggested use

5 capsules 3 times/day. Take on an empty stomach with a glass of water. 

Advisory information

Do not exceed suggested dosage. Keep out of the reach of children. Food supplements should not be used as a substitute for a balanced diet and healthy lifestyle. Store tightly sealed in a cool, dry place. Do not expose food supplements to direct sunlight, heat or humidity. Manufactured in the U.S. If you are pregnant, nursing or taking medications, contact your healthcare provider before taking this product. 

This product is not vegan.


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Customer Reviews
  1. Best I've tried against candida!
    Just want to say that Formula SF722 is a great product! So far it’s the absolutely best thing I've tried for candida!

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  2. Helps with candida overgrowth
    This definitely helps with candida overgrowth. Since I started taking formula sf722, my candida symptoms have become much more mild (fatigue, acne, depression). Thinking of buying another bottle.

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  3. Very good
    I had major problems with fungus in the gut and in the vaginal area after antibiotics. I tried everything, even prescription medicines. Sf722 has helped me tremendously and the fungus is gone after 30 days of use, thank you.

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  4. Formula SF722 is very good!
    Formula SF722 is a very good supplement!

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  5. Very effective against Candida
    This is the most effective thing I have tried for Candida overgrowth in the intestines.

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