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🌟 Elevate your gut game with FiberMend — because your microbiome deserves the best!
THORNE FiberMend is a flavorless prebiotic fiber powder designed to support optimal digestive function, promote regularity, and relieve occasional constipation. NSF Contents Certified and trusted by professional sports teams, it offers a gentle, soy-free formula with antioxidants to maintain balanced gut flora and overall wellness. Each bottle contains 30 servings, making it an essential daily supplement for proactive digestive health.

















| ASIN | B00BGJ7EBC |
| ASIN | B00BGJ7EBC |
| Age Range Description | Adult |
| Best Sellers Rank | #4,116 in Health & Household ( See Top 100 in Health & Household ) #21 in Dietary Fiber Nutritional Supplements |
| Brand Name | THORNE |
| Container Type | Bottle |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,252) |
| Date First Available | February 9, 2013 |
| Dosage Form | Powder |
| Flavor | Unflavored |
| Global Trade Identification Number | 00885570062869 |
| Item Dimensions | 4.86 x 4.86 x 6.18 inches |
| Item Form | Powder |
| Item Weight | 12 ounces |
| Item model number | SP635 |
| Manufacturer | Thorne Research |
| Manufacturer | Thorne Research |
| Manufacturer Part Number | SP635-R |
| Material Features | Soy Free |
| Material Type Free | Soy Free |
| Model Name | e FiberMend - Prebiotic Fiber Powder to Help Maintain Regularity and Balanced GI Flora - 11.6 Oz |
| Model Number | SP635 |
| Number of Items | 1 |
| Primary Supplement Type | Arabinogalactan |
| Product Benefits | Gut Health Liver & Detox |
| Product Dimensions | 4.86 x 4.86 x 6.18 inches; 12 ounces |
| Specific Uses For Product | Gut Health |
| Total Servings Per Container | 30 |
| UPC | 693749002826 885570062869 |
| Unit Count | 11.6 Ounce |
J**O
Good product
Great product. Goes down easy and I kinda like the taste even though it’s unflavored. It’s like you’re drinking bread. It does a nice job without overly binding and does not cause cramps. I’d like to see it without the green tea, but that would be beneficial for most people.
D**D
Works Well
This fiber powder has been working really well for me. I just stir it into my morning coffee and don’t even notice it’s there. It mixes in easily without changing the taste much, which makes it simple to use every day. It’s been effective, and I’ll definitely keep buying it.
R**R
You should try it
Doesn’t taste bad, is perfect with your protein shake.
J**I
Best of the best.
This is one of the finest fibers I have had. No harsh chemicals or artificial ingredients.
N**T
Good stuff
Good stuff. Mixes well with coffee.
K**D
short 5 days worth of servings
It was very hard to rate this product. As far as its efficacy as a fiber supplement it works better than any other product I've tried before. Having said that, its solubility is very poor. No matter what liquid I use, whether it is ice cold, room temp or warm, or for how long or vigorously I stir, the product will not mix in properly. It leaves many clumps and lumps. That isn't a big deal for me... I just drink them down! What really gets me angry is the misrepresentation that this is a 30 day supply (as is indicated on the label). The serving size is listed as two level scoops. I got 25 servings from the last container I ordered. I am a nurse and a science teacher, so believe me when I say I know how to measure properly. This product is expensive. It works very well, but to be so pricey, and then to be short 5 days worth of product is unacceptable. I will be measuring this new container and will report back on the serving count. Updated 4 July 2017: I changed my rating to one star because there is obviously a deliberate shortage of product. The first time I purchased this I noticed that it ran out too soon. The label says: Serving Size: two level scoops Serving Per Container: 30 I decided to carefully measure with the next container I purchased (see above review). It lasted from 5/16 to 6/9 = 25 doses. I know sometimes there are packaging errors, so I continued to count with the 3rd container. It lasted from 6/10 to 7/4 = 25 doses. Again. I will be contacting the company and asking them (or Amazon) for a refund for all three containers. To charge $41.10 for a one month supply of dietary fiber is ridiculous to begin with, but I bought it on the advice of my doctor. To charge $41.10 and then rip you off 5 days worth of product is completely unacceptable. I will also be informing my doctor to ask her to stop recommending this product until they treat their customers with integrity. Updated July 6th: This was the response from Thorne Research: "Thank you for reaching out! We’re sorry you didn’t have an excellent experience with our product, which is always our goal. At the time of manufacturing, each bottle of FiberMend is filled according to the weight of the powder listed on product label. Likewise, the Supplement Facts information is determined by the weight of one serving – according to the number of servings listed on the product label. However, by the time a powdered product, like FiberMend, gets to a customer, sometimes the powder will compact down – it “settles” – and therefore an individual scoop can vary in how much powder the scoop contains compared to when the powder was first manufactured. To maximize the consistency in the amount of powder each time you take a scoop of it, we recommend inverting the bottle a few times – you’re not “shaking” the powder, you’re just “fluffing” it – before each use. Plus, be sure to take care the powder is level with the top of the scoop." ***So basically the company tells me that in order to find an extra five day supply of product ($6.85 worth) I just need to "fluff" my fiber before each use. Never. Buying. Again.
B**L
Highly Effective w. No Gas or Bloating
This fiber supplement is highly effective without nasty side effects. I’m now on a medication that causes bad constipation. I eat lots of fiber rich food but it wasn’t enough. I tried many of the more common supplements but they caused me to have horrible gas and bloating as they contained ingredients like husk or wheat that ferments in your stomach. Thorne’s ingredients do not cause ANY bloating or gas. It is gentle yet highly effective. The reason for the four stars instead of five is that it is not tasteless as they claim and to me has a rather mild but unpleasant taste. I manage that by putting some Milo flavor drops in the water that I mix it in - mixing it in juice or other flavored drink would work too. But for me it’s worth 30 seconds of a mildly unpleasant taste to finally be regular without the gas & bloating. And yes it is expensive. However I only need 1/2 scoop every other day so it actually lasts much longer.
K**C
It works! Read the review
Please read this review. First off, this product works like a charm to make you regular! ( Better than Psyllium husk) Thank you Thorne. Second, if you look up each individual ingredient and check its efficacy, you will be pleasantly surprised, I promise. Third, to all the customers that complain about not getting 30 scoops for the price...the product reviews on Thorne website suggest people flip the container over a couple of times to "re fluff" the contents and then you should get the 30 scoops. The product settles over time. Also, it mixes well with warm water. I personally loved the taste, like cream of wheat, or toasted rice. I take other Thorne vitamins, and no one paid me to write this review. I would love to know if customer can get away with taking 1/2 scoop after awhile. I have not been using it for that long.
T**Y
Tasty and convenient
Helps you reach your daily fiber goal and tastes really good at the same time. I mix it into my coffee personally and it tastes better than without
R**R
Easily dissolved
Good but expensive
H**Y
Empfehlenswert
Gute Qualität. Der Körper nimmt es leicht auf.
J**K
Good product
Works really well for gut issues
D**N
Fibe out of Fibe
Fibremend has mended my fibre
Trustpilot
2 weeks ago
1 month ago