Bacopa Monnieri: Memory Evidence, Side Effects and Medicine Cautions
What reviews of bacopa trials found for memory and attention, which results are limited, the side effects reported and who should ask a clinician first.
Content last updated . This page has not been medically reviewed.
What is Bacopa monnieri good for?
What the body uses it for, and how strong the evidence is. A normal job in the body is not proof that extra supplements add benefit; each card says which.
Verbal memory (free recall)
Preliminary or mixedIn six 12-week trials in adults without dementia, bacopa extracts improved performance on 9 of 17 memory free-recall tests.
Supplements: Small, short trials in healthy adults; a better score on a lab test is not the same as better everyday memory.
Speed of attention
Preliminary or mixedA meta-analysis of nine placebo-controlled trials (518 people) found a shorter Trail B time and shorter choice reaction time.
Supplements: Differences were measured in milliseconds on tests; practical meaning is not established.
Working and short-term memory (compared with ginkgo)
Preliminary or mixedA 2026 network meta-analysis of 29 trials in healthy adults (2,107 people) reported better working and short-term memory with bacopa, but no clear difference in sustained attention, selective attention or processing speed.
Supplements: Promising but limited; the authors noted lack of direct comparisons.
Overall certainty for healthy adults
Not enough evidenceA review of nine ingredients marketed for thinking in healthy adults, including bacopa, called the certainty low because studies were inconsistent, imprecise and often flawed, and product contents are not always known.
Supplements: No firm conclusion can be drawn for healthy adults.
Attention and behaviour in children and teens
Preliminary or mixedA review of five studies in children and adolescents reported small-to-medium gains in some memory, language and attention-related measures.
Supplements: Preliminary; not a recommendation for children.
Calming and anxiety (traditional use)
Not enough evidenceAyurvedic medicine uses bacopa for anxiety, insomnia and epilepsy; StatPearls calls it a calming cognitive enhancer.
Supplements: Traditional use; we could not verify trial support from the text read.
Connected topics
Open a group to see how each topic connects and how strong the evidence is.
Health goals (3)
- Memory SupportPreliminary or mixed
Reviews of 12-week trials in adults without dementia report better free recall on some tests; studies are few and the evidence is limited.
- Cognitive PerformancePreliminary or mixed
Some trials report faster attention and reaction times, but a review of nine thinking-support ingredients rated certainty low.
- Better FocusPreliminary or mixed
A meta-analysis found shorter reaction and Trail B times, yet a 2026 network meta-analysis found no clear change in sustained or selective attention.
Body systems (3)
- Brain & FocusPreliminary or mixed
Studied mainly for memory and attention in adults, with limited and varied results.
- Digestive SystemDocumented risk
The most common side effects are digestive: more frequent stools, nausea and cramps.
- Nervous SystemPreliminary or mixed
Cognitive tests are the main outcomes studied; effects on the nervous system itself are not established.
Body parts (3)
- BrainPreliminary or mixed
Trials test memory and attention; effects on brain structure or disease were not shown in the sources we read.
- GutDocumented risk
Nausea, abdominal cramps and increased stool frequency are the commonly reported effects.
- Nervous SystemPreliminary or mixed
Cognitive performance is the studied outcome; evidence is limited.
Functional actions (1)
- Cognitive EnhancementPreliminary or mixed
Some memory and attention test gains in healthy adults, but small, short and inconsistent studies; certainty is low.
Conditions & symptoms (1)
- NauseaDocumented risk
Nausea is one of the commonly reported side effects of bacopa.
Documented risks and interactions (2)
- Digestive side effects. The most common side effects are digestive: more frequent stools, nausea and abdominal cramps.
- Liver safety record. LiverTox says bacopa has not been linked to liver enzyme rises or clinically apparent acute liver injury.
Evidence labels: promising but limited, mixed, insufficient evidence, Proper evidence not found.
What the research found
| Question | What the source found | Label |
|---|---|---|
| Attention and reaction time | A meta-analysis of nine placebo-controlled trials (518 people) reported a shorter Trail B test time and shorter choice reaction time. The authors said a large head-to-head trial was needed for definitive data. [1] | Promising but limited |
| Memory in adults without dementia | A systematic review of six trials, all 12 weeks long, found better performance on 9 of 17 tests of free recall. [2] | Promising but limited |
| Other abilities | The same review found little evidence of improvement in other thinking domains. [2] | Insufficient evidence |
| Bacopa compared with ginkgo | A 2026 network meta-analysis of 29 trials in healthy adults (2,107 people) found no significant differences in sustained attention, selective attention or processing speed; the authors noted the lack of direct comparisons limits the strength of the evidence. [3] | Mixed |
| People with dementia | Proper evidence not found: the bacopa reviews we read covered adults without dementia or children (searched: PubMed systematic reviews of bacopa). | Insufficient evidence |
Reading these results: a faster score on a lab task is not the same as better everyday memory. A broader review of nine ingredients marketed for thinking in healthy adults, including bacopa, called the science low certainty because studies were inconsistent and imprecise and the contents of products are not always known. [4]
Children and teens
A 2016 review found five studies of bacopa in children and adolescents and reported mild side effects in a small share of participants, but said replicated, well-designed studies are needed. [5] This is not a recommendation for children. Talk to a pediatrician before giving any herbal product, and see children and teens.Side effects and safety
- Common effects. A StatPearls clinical overview lists mainly digestive effects: increased stool frequency, nausea and abdominal cramps. [6]
- Liver. The NIDDK's LiverTox entry says bacopa has not been linked to liver enzyme rises or clinically apparent acute liver injury. [7] That is not proof of safety in every product; see liver safety and supplements.
- Pregnancy and breastfeeding. Not described in the sources we read. Ask a clinician; see pregnancy and breastfeeding.
- Medicines. Specific bacopa-medicine interactions were not described in the sources we read, which is not the same as none existing. Anyone taking medicines, especially for epilepsy, anxiety, sleep or dementia, should ask a pharmacist. See medication interactions.
- Kidney conditions and surgery. Not described in the sources we read. Tell your surgical team about all supplements; see supplements before surgery.
Memory problems need a clinician
If you or someone you know has memory loss, confusion or trouble with daily tasks, see a clinician first. Bacopa should not be used in place of an assessment or of any prescribed treatment. See memory changes: when to get help.Quality
Trials use specific standardized extracts; a shop product may differ. See quality testing and certifications and the wider botanical and mushroom nootropics page.Frequently asked questions
Does bacopa improve memory?
Reviews of 12-week trials in adults without dementia report better free recall on some tests, but evidence for other abilities is limited. [2]
Does bacopa help anxiety?
Proper evidence not found in the sources we read for this page. StatPearls lists anxiety among Ayurvedic uses of bacopa, which is a traditional use, not trial proof. [6]
What are the side effects of bacopa?
Digestive effects such as nausea, cramps and more frequent stools are the most common listed. [6]
Is bacopa safe for the liver?
LiverTox reports no link to liver enzyme rises or clinically apparent acute injury, but ask a clinician if you have liver disease. [7]
Can children or pregnant people use bacopa?
A review of children's studies reported mild side effects in a small share of participants but called for more research. [5] Pregnancy safety was not described in the sources we read; ask a clinician.
References
- Kongkeaw C et al. Meta-analysis of randomized controlled trials on cognitive effects of Bacopa monnieri extract. J Ethnopharmacol 2014. Read 2026-10-22.
- Pase MP et al. The cognitive-enhancing effects of Bacopa monnieri: a systematic review of randomized, controlled human clinical trials. J Altern Complement Med 2012. Read 2026-10-22.
- Comparative effects of Bacopa monnieri and Ginkgo biloba on cognitive functions: a systematic review and network meta-analysis. Phytomedicine 2026. Read 2026-10-22.
- Crawford C et al. Dietary Supplement Ingredients for Optimizing Cognitive Performance Among Healthy Adults: A Systematic Review. J Altern Complement Med 2021. Read 2026-10-22.
- Kean JD et al. A systematic review of the Ayurvedic medicinal herb Bacopa monnieri in child and adolescent populations. Complement Ther Med 2016. Read 2026-10-22.
- Walker EA, Pellegrini MV. Bacopa monnieri. StatPearls, 2023. Read 2026-10-22.
- Bacopa monnieri. LiverTox, National Institute of Diabetes and Digestive and Kidney Diseases, 2024. Read 2026-10-22.