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Undecyn®
(Undecylenic Acid)
Thorne Research
Ingredients:
| Calcium (from 150 mg calcium undecylenate) | 15
mg |
| Grapefruit seed extract | 37.5
mg |
| Bentonite clay | 150
mg |
| Betaine HCl | 150
mg |
Undecylenic acid occurs naturally on the surface of skin where it seems to have an anti-yeast and anti-candida effect. It is:
- A Fatty Acid (10-undecenoic acid)
- A naturally product
that occurs in sweat (skin)
Undecylenic acid and an herb, Pau D'Arco, are two of our favorite products for yeast infections. Click here for Pau D'Arco. - Produced commercially by a vacuum distillation of castor bean oil
- An antifungal, as are most fatty acids
One study showed undecylenic acid to be 6 times more powerful than caprylic acid in Candida infections.1
Undecyn has 150 mg of undecylenic acid.
Rationale:
This formula contains betaine HCl for acidification and to promote digestion and detoxification. Also, Bentonite clay is in the formula to aid in absorption of endotoxins and help heal the gut lining. This formula contains grapefruit seed extract, which is probably of little benefit (see our article on grapefruit seed extracts).
In total, we believe this product is effective in yeast infections and aids in establishing normal gut microflora.
Dosage:
Dogs:
- 1 /4 capsule for each 10 lbs body weight twice daily up to a maximum of 3 capsules twice daily
Cats:
- 1/4 capsule daily with food
Birds:
- Add to soft foods
- Sprinkle lightly on food twice daily
- If giving orally, 1/32 capsule for each 200 grams body weight twice daily
1. Peck SM, Rosenfeld H. The effects of hydrogen ion concentration, fatty acids and vitamin C on the growth of fungi. J Invest Dermatol 1938;1:237-265.


