Improvement after a supplement is not the same as a comparative result
Start with the comparison. A before-and-after change alone cannot isolate the contribution of an ingredient.
Probiotics
Selected research topic
Exercise performance
The confirmed comparison studies tested several ingredients together. They cannot isolate the effect of this ingredient.
- Publications for this topic
- 2
- Human comparison publications
- 1
- Publications needing review
- 0
Findings in the studies
run time to fatigue
- A better result than the comparison group was reported.
Several ingredients were tested together, so this ingredient’s individual effect is unknown.
What the comparison group used was not confirmed.
Combination studyMeasurement and study conditions
- Study type
- Randomized controlled trial: subjects were randomly assigned to groups for comparison.
- Study population
- Human participants · Participant characteristics were not confirmed.
- Ingredients tested
- Ingredient combination
- How results were compared
- Results were compared between groups.
- Measurement time
- Not confirmed.
Muscle strength
Research with unclear study subject or type
- A change was reported, but the comparison could not be confirmed.Single ingredient
Measurement and study conditions
- Study type
- Meta-analysis
- Study population
- Recorded population category: Patient group. Whether the research involved humans needs confirmation.
- Ingredients tested
- Single ingredient
- Measurement time
- Not confirmed.
Representative outcome and study details
Studies with an unspecified organism reported a change with no confirmed comparison group in Muscle strength.
Single-ingredient studies · Includes patient groups · comparator not confirmed
1 publications linked to this result
- Route, form, dose, or population details are incomplete, so the findings cannot be confirmed as directly comparable.
Data coverage and detailed study classifications
Paper counts are separated by research topic below. One paper may contribute to multiple findings.
Analysis status: Public-ready
Ingredient analysis date:
How the grade was determined: B
The 60.0 evidence score includes 1 independent human studies and 1 clinical studies in the representative benefit area. The B tier remains conservative because of limited repetition across independent human clinical studies, too few clinical findings with an explicit effect direction.
The grade is based mainly on the research area with the most evidence. It does not mean the same result was found in other areas.
Papers linked to this ingredient overall: 110
Papers linked to this topic 2 · distinct papers 2 · papers with a confirmed human comparison 1 · papers needing additional review 0
A publication may appear in more than one count. These numbers should not be added. Ingredient-wide papers, topic-linked papers, and sources in outcome groups use different scopes. Adding source counts may count the same paper more than once.
- Muscle strength: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- run time to fatigue: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
What the research found
run time to fatigue
The study reported improvement in this measurement.
Controlled study in people · Ingredient combination · Unspecified population
Several ingredients were used together. This does not establish the effect of this ingredient alone or synergy.
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Muscle strength
A change was reported, but the comparison could not be confirmed.
Meta-analysis · Single ingredient · Patient group
Analysis coverage and paper counts
1 paper · 1 measured outcome
Review overlap with primary papers is unknown; counts stay separate.
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
How to read research findings
How should I read research findings?
Research guidesNo clear difference and an uninterpretable result are different
A reported null comparison contains a result. An abstract without an interpretable comparison leaves a question unresolved.
Paper counts and study counts are different
Count original research separately from research that reanalyzes it. Publication volume is neither replication nor a quality rating.
Side effects and combination findings
Findings from this ingredient alone are shown separately from those involving another supplement or medication.
No reviewed caution rules are available yet. Reported caution findings are shown below.
Review 1 combination findings and 0 findings that outperformed an ingredient alone.
Findings to review with care
Side effects reported for the ingredient alone are separated from findings involving another supplement or medication.
Side effects reported with this ingredient alone
Symptoms or adverse events reported in studies without another active ingredient.
side effect incidence1 papers
Probiotic supplementation during H. pylori antibiotic therapy may reduce overall side effect incidence compared to control (RR 0.735, 95% CI 0.598–0.902), though this benefit was only confirmed in non‑blinded trials.Human studies · Meta-analysisReported improvements with combinations
Combination findings are grouped by how the study compared them. This is not a recommendation to combine ingredients.
Combinations with reported improvement
The combination showed improvement, but each ingredient's contribution is unclear.
셀레늄Co-supplementation with probiotics and selenium resulted in significant improvements in mental health, hormonal profiles, and oxidative stress markers compared to placebo.