Bacopa monnieriBotanical

• Memory and delayed recallLikely helps

  A meta-analysis pooling 9 RCTs (518 adults, every trial at least 12 weeks long) found standardized extract improved attention-task performance and speed of processing versus placebo [3].
  
  The single most replicated result across the whole literature is better delayed word recall [1]. ^[3]

• General cognition in adultsPossibly helps

  Individual adult trials disagree, and we are not smoothing that over.
  
  Some report gains in verbal learning, memory acquisition and Stroop-task performance, in healthy adults and in adults over 55 [1].
  
  A 30-person RCT at 450 mg/day for 12 weeks found no significant cognitive change, only a trend toward reduced anxiety [1]. A 76-subject trial using weight-based dosing found better retention of new information but no effect on attention or memory retrieval [1]. ^[1]

• ADHD symptoms in children and adolescentsPossibly helps

  A systematic review of 5 controlled studies found consistent improvement in language and behavior domains and in memory span [4].
  
  In two of those RCTs, at 100 mg/day for 3 months, inattention, hyperactivity and word recall all improved versus placebo, with no serious adverse events [14].
  
  The trials are small and the dropout rate ran about 22.5% in each, so read this as encouraging rather than established [14]. ^[14]

• Parkinson's diseasePossibly helps

  One small pilot RCT in 20 patients used 225 or 400 mg/day for 90 days and reported improved motor and emotional function against baseline [5].
  
  Twenty people and a baseline comparison is a starting point, not an answer. ^[5]

• Any approved medical indication - two NIH sources frame it differentlyPossibly helps

  Both of these are accurate at their own scope, and we are showing both rather than picking one.
  
  LiverTox states bacopa has not been shown to be effective for any disease or medical symptom in adequately controlled prospective human trials [2].
  
  StatPearls and the pooled 9-RCT meta-analysis, both also NIH-indexed, report specific statistically significant benefits on delayed recall and speed of attention [1]. No approved disease indication and a narrow measurable cognitive-test benefit are not contradictory claims. ^[2]

• Standardized extractThe form behind nearly every positive trial result

  Elemental content

  Labelled by bacoside content, commonly 20-55% [1]

  Absorption

  Bacoside A is water-insoluble and poorly absorbed orally, and bitter enough to affect palatability [5]

  Best for

  The form behind nearly every positive trial result [1]

• CDRI-08 and BacoMindThe specific branded extracts that recur across the cited trials

  Elemental content

  Named proprietary standardized extracts; BacoMind is a full-spectrum extract standardized to multiple bacosides

  Absorption

  BacoMind went through a phase 1 safety study in 23 volunteers and a cognition RCT in older adults [1]

  Best for

  The specific branded extracts that recur across the cited trials [1]

• Crude dried herb powderThe traditional preparation, and the cheapest

  Elemental content

  Unstandardized - bacoside content varies by plant part and preparation [1]

  Absorption

  Dosed in grams rather than milligrams, at 5-10 g/day

  Best for

  The traditional preparation, and the cheapest [1]

• 1:5 alcohol tinctureA documented traditional form with no controlled-trial support of its own

  Elemental content

  Not standardized by bacoside percentage

  Absorption

  Taken at 10-20 mL/day in divided amounts [1]

  Best for

  A documented traditional form with no controlled-trial support of its own [1]

• Cyclodextrin, phospholipid and nanoparticle complexesNothing yet, in people. None of these formats has human clinical-trial data, so any bioavailability advantage is unconf…

  Elemental content

  Delivery systems built around bacoside A rather than a standardization percentage

  Absorption

  Cyclodextrin roughly tripled solubility in vitro; a phospholipid complex raised peak serum bacoside by 17-18% in mice [5]

  Best for

  Nothing yet, in people. None of these formats has human clinical-trial data, so any bioavailability advantage is unconfirmed [5]

• Gastrointestinal effects

  The most consistently reported side effects are gastrointestinal: nausea, more frequent stools or diarrhea, and abdominal cramps [2].
  
  They are attributed to bacopa's cholinergic activity stimulating the gut. Less common reports include flatulence, dry mouth, headache, dizziness, insomnia, rash, fatigue and flu-like symptoms [2].
  
  NIH's LiverTox describes them as minor and short-lived, with adverse-event rates in trials similar to placebo, and records no link to liver injury [2]. ^[2]

• Conditions its cholinergic activity makes worse

  Because bacopa raises acetylcholine activity, several professional references advise caution in peptic ulcer disease, asthma and COPD, bradycardia, and urinary or GI tract obstruction [1].
  
  This is mechanism-based caution rather than a documented series of harms. ^[1]

• The databases disagree on how much caution to express

  Drugs.com's professional monograph says interactions are "None well documented" [4].
  
  StatPearls, the 2025 Nutrients review and the Merck Manual list specific named interactions - thyroid hormone, amitriptyline, warfarin, glipizide, diltiazem, losartan, donepezil and more [1].
  
  They are working from the same CYP-inhibition mechanism. The gap is a difference in evidentiary threshold, not a factual disagreement. ^[4]

• Pregnancy and breastfeeding

  No source reviewed recommends it. Drugs.com's monograph and a 2025 peer-reviewed review both say to avoid it, because no human clinical safety studies exist for pregnancy or lactation [5].
  
  Only animal studies exist, and those did not assess safety endpoints. This is a data gap, not a demonstration of harm [5]. ^[5]

• Cevimeline - a documented case

  A 2022 peer-reviewed case report describes a 58-year-old woman with Sjogren's syndrome, on cevimeline for years without incident [11].
  
  The night after taking a bacopa plus phosphatidylserine supplement she developed suspected cholinergic toxicity: sweating, malaise, nausea and a racing heart [11].
  
  Symptoms resolved with hydration and stopping the supplement. The authors attributed it to bacopa inhibiting CYP3A4 and CYP2D6, which metabolize cevimeline [11]. ^[11]

• Cholinergic and anticholinergic drugs

  Bacopa has acetylcholinesterase-inhibiting activity of its own, so it may add to the effect of bethanechol, carbachol, pilocarpine, donepezil and tacrine [1].
  
  By the same mechanism it may work against anticholinergic medications [1]. ^[1]

• Thyroid hormone medication

  A mouse study found bacopa leaf extract at 200 mg/kg raised thyroxine (T4) by about 40-41% [1].
  
  On that basis StatPearls, a 2025 Nutrients review and the Merck Manual all advise caution or avoidance with thyroid hormone medication or in hyperthyroidism [5].
  
  The evidence here is one animal study, not a human interaction trial or a case report. ^[1]

• Antidepressants

  Reported at case or study level: reduced amitriptyline clearance via CYP inhibition, and back pain plus heavy sweating when combined with agomelatine [1].
  
  One case of myocardial infarction was reported with combined moclobemide use [1]. WebMD separately lists confusion, agitation and blood-pressure or temperature changes with fluoxetine, without citing a specific study [12]. ^[1]

Bacopa is not a meaningful dietary nutrient source and has no entry in USDA FoodData Central. Essentially all human research and consumer use is as a supplement rather than a food [9].

The plant is technically edible. Plants For A Future documents the leaves eaten raw in mixed salads, cooked as a vegetable, added to soups or pickled, with the flowers historically eaten during food shortages [9].

North Carolina State University's Extension database confirms the leaves are edible raw or cooked. It also warns that large quantities cause nausea, faster intestinal motility and GI upset - the same cholinergic mechanism seen in the dosing literature [10].

No source reviewed names it as an ingredient in any established regional cuisine at food-portion scale.

No trial has compared morning against evening dosing, so there is no evidence-backed best time [1].

The one protocol that specified timing, the Bacognize sleep and stress study, used one capsule twice daily and explicitly allowed it with or without food [15].

Most cognition trials at 300-450 mg/day simply set a daily total and left time of day uncontrolled [1].

On timeline, every source agrees the memory effect is cumulative rather than acute, with 12 weeks the standard run-in before anything is measured [1].