

🌟 Elevate your inner ecosystem — because balance is the new power move!
THORNE Undecylenic Acid delivers 250 mg of clinically supported active ingredient per capsule to promote a healthy balance of gut and vaginal flora. This gluten-free, allergen-conscious supplement supports optimal gastrointestinal function, nutrient absorption, and immune health. Trusted by elite athletes and healthcare practitioners alike, it offers 50 servings in a clean, additive-free formula designed for adults seeking proactive, science-backed wellness.



















| ASIN | B000FGXMWC |
| Age Range Description | Adult |
| Allergen Information | Dairy Free, Fish Free, Shellfish Free, Soy Free |
| Best Sellers Rank | #19,614 in Health & Household ( See Top 100 in Health & Household ) #591 in Blended Vitamin & Mineral Supplements |
| Brand Name | THORNE |
| Color | Pale Yellow |
| Container Type | Bottle |
| Customer Reviews | 4.4 out of 5 stars 1,761 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 Height | 4.94 inches |
| 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 |
T**N
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.
J**T
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.
L**H
Wonderful for fungus
I can't live without this product! I have skin fungal issues (likely due to something systemic) and itch like CRAZY on my back and get red raw fungus in other less aired out areas. This product STOPS the itching and prevents fungus growth. NOTE: ordering this during hot months will lead to them sticking together.
K**.
Truly Outstanding for Fungal Infections!
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.
A**R
great product BUT inspect your bottles on arrival
I've been using Thorne's Undecylenic Acid for a few months now, and it's truly been a game-changer for managing fungal acne and overall what feels like candida overgrowth symptoms throughout my body. Within a couple of days I could aready notice a real improvement—less irritation, clearer skin, and my skin barrier finally felt like it was starting to heal and strengthen again. It's definitely become a staple in my routine. That said, I’m taking off one star because my most recent bottle arrived with the capsules all stuck together, making them impossible to use. I had to file a refund claim, which I typically don't do. Otherwise, this is a fantastic product that I highly recommend if you're struggling with similar skin issues or just feeling like you need a bit of assistance with some candida symptoms. Just double-check your bottle when it arrives!
L**J
Excellent, does what it says, supplier was quick
I had Candida a few years back and my nutritionist recommended undecenoic acid. At the time all I had heard of, for natural remedies, was a severe sugar restricted diet (still the same BTW) and caprilic acid. Some say oregano, garlic, black walnut, pau d'arco and other natural herbs help also by I have only tried garlic, which is good but I can't tell much effect. I started on the Thorne Research SF 722 and it worked within about 4 weeks, although I think I stayed on it for 6 to 8 as recommended by my nutritionist at the time. I had a recent recurrence and immediately used my leftover supply but was (my bad) not as strict about diet. As soon as I ran out of the SF 722, the Candida hit with a vengeance. I immediately ordered this on Amazon and reinitiated the stricter diet (see below). In between I tried to use caprilic acid, which works, but not as well. I started back on this and, while I can tell I am not ok yet, I can definitely tell it works. I use 6 to 8 gel caps per day. I think the bottle recommends more but, as I recall, 4 x twice a day was what my nutritionist had recommended (actually, I thought he said only once per day but it's been long enough I can't remember). It's only been less than 1 week since the 're-start so I'm still on it. Diet: no matter what, you have to be extremely careful. NO extra SUGAR , none, nada. No sugar added to food, none, nada, nope. Look at all labels. At the very least, 1 month. Sorry folks, that's how to fight this. My nutritionist recommended APPLES (the undecenoic acid can stop up the gut). Just don't overdo on Apple's. Another reviewer said granny Smith, yes, that reviewer is probably right but I remember using any Apple, I just only did about half a day and it worked then and seems to work now. For the same reason, DRINK LOTS OF WATER. 64 ounces a day is often recommended. If you don't, you are going to have a lot of gut problems worse than the Candida. My nutritionist recommended no fruit except Apple's and berries. I am very careful not to overdo berries but they are often lower in sugar than some fruit. Many people say to avoid ALL fruit. I'd just say at first, avoid all except green apples, lemons and limes for a couple of weeks, then add berries in small quantities. No other fruit for 2-3 months. No sugar for longer if you can or at least 2 months. No cheese or fermented products, no mushrooms, very, very low quantities of carrots and white potatoes for at least a month. Personally I restrict almost all high starch/high glycemic carbohydrates (turn straight to sugar in the body). BUY A GOOD ENZYME AND PROBIOTIC AND EAT YOGURT. The gut needs these seriously to repair any damage done. Read up on this. Take them hours apart from taking the FS 722. 4 diet comments: sugar in foods, sweet potatoes, grains and Stevia. (1) sugars in foods: read all labels carefully. Soup and lunch meats/sausage are two weird foods that often have more sugar than you might expect. (2) sweet potatoes: are lower glycemically than you might expect. My nutritionist recommended them and they work well for my body. If you eat them and you do not get better, eliminate, this might be a personal thing. I do NOT agree with the reviewer who said to avoid them. (3)grains, I personally am probably gluten intolerant and eating gluten may have been part of the problem. Avoid most grains, especially wheat and corn. However, my body seems to tolerate rice and many gluten-free grains, especially the "seed" grains and those with higher protein (e.g. quinoa, amaranth and buckwheat) but the reviewer that cautioned against all grains may be right. I personally still eat grains but NO YEAST, NO RAISED BREAD. I eat rice crackers, rice chips (no corn added, Lundberg makes one), and my own pancakes I make with Stevia. (4) stevia: I do not agree with the reviewer on this one. Even my nutritionist recommended it. But it CAN increase your "craving" for sugar. With me personally, I quelled it.
A**A
Gave me a stomach ache and fatigue.
I wanted to like this but in the end, I decided to stop taking it and to use other anti fungals. Everytime I took it I got a stomach ache after, not immediately but soon after. I honestly don't know if it worked on my candida and I took more than one bottle of it. only 10 caps a day as I couldn't take more because of stomach ache issues. So, I would say, I'm sure it works for alot of people, but not for me. I also have a strange rash on my arm that I didn't have when I started taking it. And its not going away. Grapefruit Seed Extract [Allergy Research Group] has worked for me. So will start taking that again. Also, Candibactin w/oil of oregano. I just got Allicin today that I ordered. will take that. also, MCT oil. those all have been studied and proven to kill candida. I truly cannot stomach this UA ,and it makes me fatigued. I don't think its the die off as its different than die off symptoms. I appreciate the reviews on Amazon as I feel less alone. It doesn't work for everybody, which is good to know. Best of luck!
C**3
Systemic Candida Sufferers (*adrenal and leaky gut)
Thank God for this specific product because it actually works and in combination with Thorne Research's Bacillus Coagulans it really kicks it up a notch. I suffered from systemic Candida infection for nearly three decades and it wrecked havoc on every aspect of my life from stability to spirituality. I was depressed, inexplicably weak and melancholy most of the time due to systemic Candida infection. None of the allopathic physicians and most of the naturopathic doctors I went to didn't know what was going on except one doctor in New York City - Dr. Armeni Harris. I went "under the radar" and the doctors begun to think I was crazy because I would constantly tell them something was very wrong with me. Luckily someone was able to correctly diagnose me , but he didn't recommend this specific supplement and I had to find it by myself based on Amazon reviews which helped dearly. Thanks Amazon community! For those who have been suffering for years with Candida I highly recommend Thorne Research's Bacillus Coagulans because if Candida has had its way your probably suffering from "dsybiosis" in your gastrointestinal system. This means if you just take something without taking Bacillus Coagulans probiotic your basically sending it on a suicide mission inside your gut. You need something to balance out the candida overgrowth with beneficial bacterial growth within your gut which can withstand the stomach acids and the hostile environment of your imbalanced gut due to Candida overgrowth. They work best in unison, please watch your diet as well stay away from yeast and sugars if at all possible when you chose to eat. Thanks for your time. February 8, 2017 Hello Amazon community, I just found out the root cause of my systemic candida, stomach distress, brain fog, low energy levels, extreme fatigue, breathlessness, and the psychological issues that come along with it. I have "low adrenal function and leaky gut" which was not diagnosed in my youth. This alone has created the environment which candida and all the secondary issues has spread, I am being treated at this time for it. I am still observing LOW MOLD diet (Jill Carnahan) which can speed up adrenal cortisol recovery with the proper supplements. I have deleted all my other tips because this the "root cause" and if your looking for "adrenal fatigue specialist" I recommend you do it asap especially if you suffer from depression, suicidal tendencies, introverted - lonely behavior, no luster for life and other mental issues created by acute adrenal failure and leaky gut - Restore for gut health really helps (March 4, 2018) Disclaimer: I am not a doctor, herbalist or a alternative physician just someone who cares....
Trustpilot
1 week ago
1 month ago