Form Comparison

De Simone Formulation vs Unstudied Multi-Strain Blends

How De Simone Formulation and unstudied multi-strain blends differ in how they work, evidence, tolerance, and cost.

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Quick verdict. Both contain multiple strains, but only the De Simone formulation was tested as a finished product, at high doses for pouchitis and ulcerative colitis. A generic blend with similar species names is not the same product, and since 2016 the original formula has been sold as Visbiome, not VSL#3. Choose De Simone for a gastroenterologist-recommended indication; generic blends have no condition they are proven to treat.

Side by Side

De Simone Formulation (8 strains) Multi-Strain Blends (Unstudied)
How it works High-dose mix of eight lactobacillus, bifidobacterium, and Streptococcus thermophilus strains; acts in the lumen of the colon. Combinations assembled for marketing rather than tested as a product. Strain designations are often missing, and CFU may be counted at manufacture rather than expiration.
Typical dose 450-1,800 billion CFU daily (pouchitis) Varies
Common uses pouchitis, ulcerative colitis (adjunct) general gut health (unproven)
Side effects Bloating. Gas, bloating.
Cost High Moderate
Also called Visbiome, original VSL#3 formula 50 billion CFU blends, 10-strain formulas

When to Choose De Simone Formulation (8 strains)

Choose De Simone Formulation when you have pouchitis or ulcerative colitis and your gastroenterologist recommends it. Since 2016 the original formula has been sold as Visbiome; products sold as VSL#3 after that date come from a different manufacturer.

De Simone Formulation (8 strains)

High dose and high cost, for pouchitis and some ulcerative colitis. Not a general-purpose product.

What to look for: Visbiome (the original De Simone formula), at the dose your gastroenterologist sets.

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When to Choose Multi-Strain Blends (Unstudied)

There is rarely a reason to choose unstudied multi-strain blends: choose a strain matched to a trial instead. The trials that support probiotics tested specific strains, not blends built from their species names.

Multi-Strain Blends (Unstudied)

There is rarely a reason to choose unstudied multi-strain blends: choose a strain matched to a trial instead.

What to look for: Multi-Strain Blends named on the Supplement Facts panel, with the amount per serving stated.

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Products on Titrate

The Probiotics category in Titrate's index holds 5,145 labels from the NIH Dietary Supplement Label Database, 2,852 of them currently on market, out of 214,745 labels indexed in total.

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Related

References

NIH Office of Dietary Supplements. Probiotics: Fact Sheet for Health Professionals.

Gionchetti P, Rizzello F, Venturi A, et al. Oral bacteriotherapy as maintenance treatment in patients with chronic pouchitis: a double-blind, placebo-controlled trial. Gastroenterology. 2000;119(2):305-309.

Whorwell PJ, Altringer L, Morel J, et al. Efficacy of an encapsulated probiotic Bifidobacterium infantis 35624 in women with irritable bowel syndrome. Am J Gastroenterol. 2006;101(7):1581-1590.

Hill C, Guarner F, Reid G, et al. Expert consensus document: The International Scientific Association for Probiotics and Prebiotics consensus statement on the scope and appropriate use of the term probiotic. Nat Rev Gastroenterol Hepatol. 2014;11(8):506-514.

Szajewska H, Kołodziej M. Systematic review with meta-analysis: Saccharomyces boulardii in the prevention of antibiotic-associated diarrhoea. Aliment Pharmacol Ther. 2015;42(7):793-801.

Goldenberg JZ, Yap C, Lytvyn L, et al. Probiotics for the prevention of Clostridium difficile-associated diarrhea in adults and children. Cochrane Database Syst Rev. 2017;12(12):CD006095.

Suez J, Zmora N, Zilberman-Schapira G, et al. Post-antibiotic gut mucosal microbiome reconstitution is impaired by probiotics and improved by autologous FMT. Cell. 2018;174(6):1406-1423.

Ford AC, Harris LA, Lacy BE, Quigley EMM, Moayyedi P. Systematic review with meta-analysis: the efficacy of prebiotics, probiotics, synbiotics and antibiotics in irritable bowel syndrome. Aliment Pharmacol Ther. 2018;48(10):1044-1060.

Guo Q, Goldenberg JZ, Humphrey C, El Dib R, Johnston BC. Probiotics for the prevention of pediatric antibiotic-associated diarrhea. Cochrane Database Syst Rev. 2019;4(4):CD004827.

Su GL, Ko CW, Bercik P, et al. AGA clinical practice guidelines on the role of probiotics in the management of gastrointestinal disorders. Gastroenterology. 2020;159(2):697-705.