Product fact sheet
Ther-Biotic Synbiotic (Klaire Labs): Strains, PHGG Dose & Evidence
Ther-Biotic Synbiotic combines 50 billion CFU with several named strains and 200 mg Sunfiber PHGG; the PHGG amount is far below the 6 g/day IBS trial dose.
The strongest current Ther-Biotic product for transparency: it provides 50 billion CFU, identifies most organisms to strain level, and uses low-FODMAP-certified PHGG (Sunfiber). The catch is dose: only 200 mg PHGG is listed, far below the 6 g/day used in a placebo-controlled PHGG trial that improved bloating but not overall IBS severity.
People who want a practitioner-oriented multi-strain formula with much better strain disclosure than Ther-Biotic Complete, People sensitive to high-FODMAP inulin who still want a small prebiotic component
Anyone expecting the 200 mg PHGG component to reproduce gram-dose PHGG trials, People who prefer a simpler single-strain product with a clearer indication-specific evidence map
Key tradeoff: Good label engineering and strain transparency; the prebiotic amount is too small to borrow the strongest PHGG symptom data.
This is a factual fit-and-tradeoff summary, not a product recommendation. Formula, device and brand claims remain manufacturer claims unless the cited source is explicitly regulatory or independent testing.
Ther-Biotic Synbiotic is one of the more technically interesting products in the SFI Health/Klaire Labs line. It pairs a 50-billion-CFU multi-strain probiotic blend with Sunfiber partially hydrolyzed guar gum (PHGG).
Compared with Ther-Biotic Complete, this formula provides better strain-level traceability because most of the organisms are identified by strain.
What strains are disclosed?
The current US product page lists a 50-billion-CFU blend including:
- Lactobacillus plantarum UALp-05;
- Bifidobacterium lactis UABla-12;
- Lactobacillus rhamnosus GG (LGG);
- Lactobacillus acidophilus DDS-1;
- Lactobacillus reuteri UALre-16;
- plus L. paracasei and B. bifidum.
Other SFI regional materials identify additional strain suffixes for the latter two organisms, but the current US page is less explicit. That discrepancy should remain source-specific rather than being silently harmonized.
The prebiotic is real PHGG—but the dose is tiny
The formula contains 200 mg of Sunfiber PHGG per capsule.
That matters because a randomized, double-blind, placebo-controlled IBS trial used 6 g/day PHGG. In that study, PHGG improved bloating and bloating-plus-gas scores versus placebo, but did not improve overall IBS severity or quality-of-life scores.
Six grams is 30 times the 0.2 g in one Ther-Biotic Synbiotic capsule.
The right conclusion is not that 200 mg is useless. It is that the positive 6 g/day PHGG trial cannot be used as proof that 200 mg inside this synbiotic reproduces the same symptom benefit.
Low-FODMAP positioning
SFI describes the Sunfiber component as Low FODMAP Certified. That can matter for people who find chicory inulin difficult to tolerate.
Still, low-FODMAP certification of one substrate does not prove the entire supplement will be symptom-free for every person with IBS.
Integrative-practice fit
This is the kind of product that fits the better side of integrative and naturopathic probiotic selection: named strains, defined CFUs, an explicit substrate and attention to tolerability.
A sophisticated multi-strain formula still needs dose matching and finished-product evidence. Practitioner use does not remove that requirement.
Evidence fit and main limitation
Ther-Biotic Synbiotic has stronger strain-level traceability than Ther-Biotic Complete. Its main limitation is the PHGG dose: 200 mg is far below the 6 g/day used in the cited positive IBS bloating trial, and no finished-product clinical-outcome trial is established here.
For a true gram-level PHGG comparator, see Tomorrow’s Nutrition Sunfiber.
Formula facts
Ingredients, actives and label details
- Viable count
- 50 billion CFU per capsule Basis: Manufacturer Source: Ther-Biotic Synbiotic — official product information
- Named strains
- Includes UALp-05, UABla-12, LGG, DDS-1 and UALre-16; current US page is less explicit for L. paracasei and B. bifidum Basis: Manufacturer Source: Ther-Biotic Synbiotic — official product information
- Prebiotic substrate
- Sunfiber partially hydrolyzed guar gum (PHGG) Basis: Manufacturer Source: Ther-Biotic Synbiotic — official product information
- PHGG amount
- 200 mg per capsule Basis: Manufacturer Source: Ther-Biotic Synbiotic — official product information
- PHGG trial dose comparison
- A placebo-controlled IBS trial used 6 g/day PHGG; the retail synbiotic provides 0.2 g Basis: Randomized trial Source: Randomized clinical study: partially hydrolyzed guar gum versus placebo in irritable bowel syndrome
Source labels preserve provenance. Manufacturer specifications, ingredient lists and performance claims are not treated as independent clinical evidence; regulatory records and independent measurements are identified separately when available.
Safety first
What should make you slow down?
Use the product as directed, avoid treating concentrated wellness products as automatically harmless, and ask a qualified clinician when your situation or medication use makes the decision less routine.
Where to buy
Current tracked merchants
Commerce note: merchant economics never enter our editorial score. Affiliate links are identified as (paid link) and use sponsored-link markup.
No merchant destination is currently tracked for this product.
Source trail
Primary documents and supporting evidence
- Ther-Biotic Synbiotic — official product informationSFI Health (Klaire Labs heritage) · Manufacturer · retrieved 2026-08-12
- Randomized clinical study: partially hydrolyzed guar gum versus placebo in irritable bowel syndromeNutrition & Metabolism · Professional health · retrieved 2026-08-12
- World Gastroenterology Organisation Global Guideline: Probiotics and PrebioticsWorld Gastroenterology Organisation · Clinical guideline · retrieved 2026-08-12
- Probiotics — Patient Education LibraryAndrew Weil Center for Integrative Medicine, University of Arizona · Professional health · retrieved 2026-08-12