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.
Bacopa
Selected research topic
Cognition
Findings differ across measurements or study conditions. The results below keep them separate.
Animal and cell findings do not establish the same effect in people.
Some findings concern patients or people with a deficiency.
- Publications for this topic
- 20
- Human comparison publications
- 2
- Publications needing review
- 11
Findings in the studies
Cognitive flexibility
- A better result than the comparison group was reported.
What the comparison group used was not confirmed.
Single ingredientMeasurement 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
- Single ingredient
- How results were compared
- Results were compared between groups.
- Measurement time
- Not confirmed.
overall cognitive performance score
- Results were mixed for this outcome.Patient group · Single ingredient · 1 and 2 months
Measurement and study conditions
- Study type
- Randomized controlled trial: subjects were randomly assigned to groups for comparison.
- Study population
- Human participants · Patient group
- Ingredients tested
- Single ingredient
- How results were compared
- Results were compared between groups. · Study comparison: Bacopa vs placebo at three assessment time points
- Additional measurement information
- Primary outcome
- Measurement time
- 1 and 2 months
Letter Search and Stroop tasks
Other human research, including observational studies and reviews
- A change was reported before and after use. Its cause cannot be isolated.General population · Single ingredient · 1 and 2 hours after consumption
Measurement and study conditions
- Study type
- Randomized controlled trial: subjects were randomly assigned to groups for comparison.
- Study population
- Human participants · General population
- Ingredients tested
- Single ingredient
- How results were compared
- Changes within the same group were compared. · Study comparison: change from baseline after Bacopa extract; no stated placebo contrast
- Measurement time
- 1 and 2 hours after consumption
cognitive functions
Animal and cell research · indirect evidence
- A change was reported in animal or cell research.Single ingredient · 15 days
Measurement and study conditions
- Study type
- Animal study · indirect
- Study population
- This is animal research. The specific characteristics of the subjects need further review.
- Ingredients tested
- Single ingredient
- How results were compared
- Comparison unclear · Study comparison: BM extract in colchicine-induced animal model; comparator details not specified in abstract
- Additional measurement information
- Primary outcome
- Measurement time
- 15 days
Other measured outcomes (6)
Attention-Deficit
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
- Systematic review
- Study population
- Recorded population category: Patient group. Whether the research involved humans needs confirmation.
- Ingredients tested
- Single ingredient
- How results were compared
- Study comparison: review summary across varied clinical trials; no common comparator estimate stated
- Measurement time
- Not confirmed.
choice reaction time
Research with unclear study subject or type
- The study reported improvement in this measurement.Single ingredient
Measurement and study conditions
- Study type
- Meta-analysis
- Study population
- Study subject not identified
- Ingredients tested
- Single ingredient
- How results were compared
- Results were compared between groups. · Study comparison: Standardized Bacopa extract versus placebo in pooled trials
- Additional measurement information
- Secondary outcome
- Measurement time
- Chronic dosing of at least 12 weeks
Memory free recall
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
- Systematic review
- Study population
- Study subject not identified
- Ingredients tested
- Single ingredient
- Measurement time
- Not confirmed.
nootropic utility
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
- Review
- Study population
- Recorded population category: General population. Whether the research involved humans needs confirmation.
- Ingredients tested
- Single ingredient
- How results were compared
- Study comparison: narrative review summary of human placebo-controlled trials and preclinical studies; no pooled estim
- Additional measurement information
- Secondary outcome
- Measurement time
- Not confirmed.
Trail B test
Research with unclear study subject or type
- The study reported improvement in this measurement.Single ingredient
Measurement and study conditions
- Study type
- Meta-analysis
- Study population
- Study subject not identified
- Ingredients tested
- Single ingredient
- How results were compared
- Results were compared between groups. · Study comparison: Standardized Bacopa extract versus placebo in pooled trials
- Additional measurement information
- Secondary outcome
- Measurement time
- Chronic dosing of at least 12 weeks
Working Memory
Research with unclear study subject or type
- The study reported improvement in this measurement.
What the comparison group used was not confirmed.
Single ingredientMeasurement and study conditions
- Study type
- Systematic review
- Study population
- Study subject not identified
- Ingredients tested
- Single ingredient
- How results were compared
- Results were compared between groups.
- Measurement time
- Not confirmed.
This result is held for interpretation. That does not mean research found no effect.
Outcome groups needing additional review (4)
- cognitive impairment · Distinct papers needing additional review: 1Evidence criteria check: 1
- cognitive performance · Distinct papers needing additional review: 1Direction unclear: 1
- Memory · Distinct papers needing additional review: 1Direction unclear: 1
- performance at the first, second, and fourth repetition post-dosing on the CDB · Distinct papers needing additional review: 1Direction unclear: 1
One paper can appear under multiple measured outcomes or review reasons, so these counts should not be added together.
Representative outcome and study details
Partial research summary
Animal studies reported improvement in cognitive functions.
These conditions come from related studies and may not describe a single paper.
Single-ingredient studies · Scope not specified · Animal studies; human applicability unconfirmed · Includes patient groups · comparator not confirmed
2 publications linked to this result (1 awaiting review included)
- Study conditions differ; results are shown descriptively and are not pooled.
- Animal and cell findings are indirect evidence.
- Some publications have not cleared source or interpretation review.
- Some papers could not be reviewed, so this summary covers only findings that could be confirmed.
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 60.3 evidence score includes 12 independent human studies and 11 clinical studies in the representative benefit area. The B tier reflects evidence directness, repetition, and consistency together.
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: 72
Papers linked to this topic 20 · distinct papers 20 · papers with a confirmed human comparison 2 · papers needing additional review 11
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.
- Attention-Deficit: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- choice reaction time: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- Cognitive flexibility: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
- cognitive functions: Sources represented in this measurement group: 2 · Distinct papers with human comparisons for this outcome: 0
- cognitive impairment: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- cognitive performance: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- Letter Search and Stroop tasks: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- Memory: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- Memory free recall: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- nootropic utility: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- overall cognitive performance score: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
- performance at the first, second, and fourth repetition post-dosing on the CDB: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- Trail B test: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- Working Memory: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
What the research found
overall cognitive performance score
Results for this measurement were mixed; no consistent conclusion can be drawn.
Controlled study in people · Single ingredient · Patient group
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.
Cognitive flexibility
The study reported improvement in this measurement.
Controlled study in people · Single ingredient · Unspecified population
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.
Letter Search and Stroop tasks
A change was reported before and after use. Its cause cannot be isolated.
Controlled study in people · Single ingredient · General population
Within-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.
choice reaction time
The study reported improvement in this measurement.
Meta-analysis · Single ingredient · Unspecified population
Between-group comparison
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.
Trail B test
The study reported improvement in this measurement.
Meta-analysis · Single ingredient · Unspecified population
Between-group comparison
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.
Working Memory
The study reported improvement in this measurement.
Review · Single ingredient · Unspecified population
Between-group comparison
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.
Attention-Deficit
A change was reported, but the comparison could not be confirmed.
Review · 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.
Memory free recall
A change was reported, but the comparison could not be confirmed.
Review · Single ingredient · Unspecified population
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.
nootropic utility
A change was reported, but the comparison could not be confirmed.
Review · Single ingredient · General population
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.
cognitive functions
A change was reported in animal or cell research.
Animal study · indirect · Single ingredient · Patient group
This finding comes from animal or cell research. It does not establish the same effect in people.
The comparison could not be confirmed.
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.
cognitive functions
The study needs further checking before its result can be interpreted.
Review · Unknown intervention · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
cognitive impairment
The study needs further checking before its result can be interpreted.
Animal study · indirect · Single ingredient · Patient group
This finding comes from animal or cell research. It does not establish the same effect in people.
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
cognitive performance
The study needs further checking before its result can be interpreted.
Review · Unknown intervention · General population
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Memory
The study needs further checking before its result can be interpreted.
Review · Ingredient combination · Unspecified population
Several ingredients were used together. This does not establish the effect of this ingredient alone or synergy.
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
performance at the first, second, and fourth repetition post-dosing on the CDB
The study needs further checking before its result can be interpreted.
Controlled study in people · Single ingredient · General population
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Other evidence · Separable contribution · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Controlled study in people · Single ingredient · Unspecified population
Between-group comparison
Analysis coverage and paper counts
2 papers · 2 measured outcomes
2 papers held from direction counts
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Review · Single ingredient · Unspecified population
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Review · Unknown intervention · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Review · Unknown intervention · Unspecified population
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
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.
Rey Auditory Verbal Learning Test (AVLT)1 papers
In a double-blind, placebo-controlled RCT, 300 mg/day Bacopa monnieri significantly improved verbal learning and memory acquisition in healthy older adults, though gastrointestinal side effects were reported.Human studies · Randomized controlled trial