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According to the website,

VSL#3® has the highest available concentration of beneficial bacteria with 450 billion live bacteria per packet. The human gut has thousands of billions of resident bacteria. In order to modulate the composition of this gut flora in a positive way, an extremely large amount of probiotic bacteria is necessary. VSL#3® is the only probiotic preparation that delivers enough bacteria to beneficially affect the gut flora in patients with serious intestinal disorders.

And by serious intestinal disorders, they refer to medically diagnosed ulcerative colitis, Irritable Bowel Syndrome, or an ileal pouch.

VSL#3® works by colonizing the GI tract with optimal quantities and types of probiotic (“good”) bacteria. These bacteria adhere to the walls of the GI tract and form a barrier that protects the inner layer of the gut from pathogenic (“bad”) bacteria and other toxic substances that can cause inflammation by modulating intestinal defense mechanisms.

In addition, VSL#3® modulates a variety of substances that are involved in the healing of inflammation. For example, VSL#3® has been shown to induce the production of interleukin-10, an important “chemical messenger” that suppresses inflammation. 22,35,39,49,64

Finally, evidence suggests that VSL#3® reduces intestinal permeability by tightening up the junctions between the cells in the outer layer of the intestine (the epithelium).39 If the spaces between the cells of the gut wall become too large, bad bacteria and toxins can leak in, causing inflammation.

At about $86 for 30 packets (of the unflavored powder), it seems like a good deal for 450 billion live bacteria per packet. Or at least compared to what I've seen at Whole Foods. Anyone have personal experience with using VSL#3 or a probiotic of similar potency?

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Do you have any proof that probiotics work ? Meaning that the effects stay even when you stop taking them ? If not, 86$*12*n years is one Bernie Madoff deal. – Ikco Nov 14 2010 at 19:38
For me, certain probiotics have produced lasting effects in the past, but I've never tried VSL#3. But I'm not asking for proof, I asking for personal experience with a particular product. – Olga Nov 15 2010 at 2:18
All I'm saying is that if you don't have any proof that Z works, why bother asking if a brand of Z is good. Why do you want to change from your working probiotics ? – Ikco Nov 15 2010 at 19:18
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Icko, I don't understand what your beef is. No, I'm not asking for general views on whether probiotics work, there are lots of other questions here about that. I personally don't need objective proof that all probiotics work. If you do, you can ask that question or go read the others. I'm asking if people have had personal experiences with VSL3 or other high potency probiotics. If you think my question is inappropriate, you can flag it. Otherwise, I don't see what your interest is. – Olga Nov 15 2010 at 20:30
Ego tempting indeed. The point that I'm trying to get across is, 1. that if your probiotics work, why do you want to change them ? Do you presume that more would work better ? And two, I'm positive you can find one testimony on the internet where people will say that they work but they seem expensive for "trial and error" and I wouldn't want to see people spending money on another marketing hype not backed up with science (not saying that about probiotics). – Ikco Nov 16 2010 at 12:23
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12 Answers

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I've taken the VSL#3 for about a month with sometimes up to 4 doses per day because my gut problems seemed so hard to shake down.

It is a very powerful probiotic, but keep in mind that a powdered version like that one will lose much more potency passing through the stomach than an enteric coated version.

Unfortunately for me though, vsl#3 made things worst, but on the good side it was the only probiotic that was strong enough to tell me something had been wrong all along with the probiotics I've been using. It made me discover that bifidum is probably overgrowing in my small intestine and that any probiotic formulation that contains it will keep my problem alive.

I agree with qualia that you should strive to learn exactly what you're dealing with.

I've tried lots and lots of probiotics and I've found that what works best for me are acidophilus formulations in enteric coated capsules without any FOS or inulin.

Hope this helps somewhat.

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That's a great point about needing to identify specific strains of probiotics that are causing problems because of overgrowth or insufficiency. – Olga Nov 17 2010 at 3:36
How did u identify other than trial & error? – dsohei Aug 22 at 20:53
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good question. i have wondered this myself if the 30x potency brings a noticeable benefit compared to the usual 5b potency. i would guess so. however, in my personal experience, it's even more important to find the right type of probiotic species for one's specific problem. for example, one needs different strains for a "simple" disbyosis caused by antibiotics than for bacterial or fungal overgrowth in the small intestine, or even an infection with a pathogen like difficile. so, i guess its more important to find out what the problem is (maybe doing a stool test), and then look for the strain that has proven to be most effective for this specific problem (see http://en.wikipedia.org/wiki/Probiotic for example). otherwise one can treat for month by using something that has absolutely no effect on ones specific problem. the strains i would try out first are boulardii, coagulans, L.GG and acidophilius.

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Excellent answer. Using wrong strains can even make things worst. – Paleo Seb Nov 16 2010 at 13:29
That's definitely a great point. To ask a totally awkward question, do you where to get a stool test like that done? – Olga Nov 17 2010 at 3:42
I believe one would be Metametrix (metametrix.com/test-menu/profiles/…). 500$ or so ? – Ikco Nov 17 2010 at 9:17
if i (still) had a problem, and lived in the US, i probably would go to this very competent dude: ibstreatmentcenter.blogspot.com he has an excellent blog about IBS and all things related to the gut and food intolerances, and also offers DNA stool testing, which apparently is way superior to the usual "simple" stool tests done by most labs. but again, it depends what your current problem or need is. if you don't have an actual problem but just want to support your gut a simpler and cheaper "off the shelf" probiotic, for example by now foods (see is.gd/hlukn ) will just do fine. – qualia Nov 18 2010 at 11:52
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for me it wasn't worth it,home made yogurt and kefir worked better

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Can you specify how it worked better? – Kamal Nov 14 2010 at 19:27
yes,it actually had a noticeable effect for constipation and helped cure my wifes bout with ulcerative colitis,with VSL#3 all I had was a lighter wallet.My wife and I have never noticed benefit from probiotics and I've tried many.I've also had success with cooking up a pot of lentils to eat every 2-3 months for the prebiotics – Christo Nov 16 2010 at 14:31
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Any update on this ?

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My opinion, more is not necessarily better pro-bioticwise. More is good when you're replacing (say after antibiotics). Not necessarily when maintaining. So Cost vs Benefit, it isn't worth it UNLESS you're having the issues specified it is for.

Speaking of which, I didn't see anything readily visible on their site as to how many of each species is in the product. They've got a boatload of species listed, but not how much of each = 450 billion. Might be evenly spread among all of them, or might be 449.9 billion of the cheapest one...

It might be on there, I didn't see it. Example of what I expect to see. Look at the Jarro site http://www.jarrodophilus.com/ Lists it right on the front page. 4.4 billion total spread out in differing amounts on the various strains.

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I know this comes months after the original question but I thought I'd add to this. From what I learned from a GI, a lot of probiotics do not work for the simple reason that the probiotics are dead by the time they are in the capsules. Probiotics are living cultures that require processing and storing at cold temperatures (fridge cold). Many manufacturers do not observe this simple rule, AND if you find your probiotic on a non refrigerated shelf, chances are you are taking a dead culture (won't help). I just started VSL#3 so I can't attest whether it works or not, but I know they are manufactured at the right temperature and need to be refrigerated so that the strains stay alive. Hope that helps.

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I took these now for 3 weeks and all of the sudden I started shitting my pants with no awareness. Definitely did not work for me- made things worse. Imagine the embarrassment of sitting at your desk and all of a sudden you feel something warm and wet and it is running down your leg... happened 3 times before I linked it to the VSL3.

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I JUST HAD MY SECOND COLONOSCOPY UNSUCCESSFULLY AGAIN DUE TO DIVERTCULUM. I'VE BEEN TESTED BLOOD AND STOOLS NEGATIVE. HAD THE VIRTUAL TOO. PRIOR TO RECENT TEST GO TRIED ANY FOR TRAVELER'S DIARRHEA. IT HELPED A LOT BUT ONLY HAD 7 Days worth sample. Like CD have multiple sudden DIARRHEA to where it interferes with daily living...including "accidents"the. Today GO gave samples to try of VAL #3...so, other than cost I'd also like to hear about other's experiences. I'm also a nurse who hasn't done much with probiotics.

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i used VSl on and off for about a year. i bought it when i could afford it. didn't do anything for my digestive problems so i stopped taking it. i used the regular and DS versions. i think it's just too expensive to contain the fillers and additives that it does. it should be pure for the amount i was paying for it- $186 for a 20 day supply.

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Does this have any sulfa in it? I just took 2 post colonoscopy and feel I had a sytemic reaction with severe itching to the point I couldn't sleep. It's had to tell the ingredients on the sample package.

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Get lost Ikco, you sound like an idiot.

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Ikco... Get a day job!

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