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Brahmi (Sanskrit); Water hyssop (English); Thyme-leaved gratiola (English); Herb of grace (English)
Brahmi is Bacopa monnieri, a low creeping herb of wet ground and marshy edges, used in Ayurveda as a tonic for the mind. Most products and trials use the leaves and aerial parts, though the Ayurvedic Pharmacopoeia of India defines the official material as the dried whole plant. What is usually sold is a capsule of standardised extract.
⚕ Educational content · traditional and historical use · not medical advice
A creeping wetland herb whose activity is attributed to dammarane type triterpenoid saponins, the bacosides. Mechanisms proposed from animal and cell work include acetylcholinesterase inhibition, choline acetyltransferase activation, antioxidant effects in the hippocampus and cortex, and reduced beta amyloid. Human evidence for these mechanisms is indirect.
Ayurveda groups Bacopa with the medhya rasayana herbs, the class held to support memory and intellect and promote longevity. Its use is recorded in the Caraka Samhita for mental conditions, and the Bhavaprakasha Nighantu of AD 1500 lists it among remedies for mental and nervous complaints; reviews trace it further, to the Atharva Veda around 800 BC, a second-hand dating. The name comes from Brahma, the creator in Hindu tradition. Brahmi is also a name for Gotu kola (Centella asiatica), so a source that uses it without a binomial may not be describing this plant.
Traditionally taken as churna, the dried herb ground to a powder, and as a 1:5 hydroalcoholic tincture; Ayurvedic practice also uses the fresh expressed juice and a decoction of the dried plant, and compound preparations including Brahmi Ghrita, a medicated ghee, Brahmi Vati, a tablet, and Saraswatarishta, which is fermented. Most modern products are capsules of a standardised extract, and the trials almost all used one of those. Standardisation runs from roughly 10% to 55% bacosides depending on the product, so two capsules of the same weight are not necessarily the same dose.
No trial has tested whether taking Bacopa with food changes how well it works. The bacosides are fat soluble, and taking it with a meal is often advised on that reasoning, but no approved source was found to support it. Ayurvedic practice infuses the herb into ghee as a carrier, which is a traditional rationale rather than a measured one. Ghee is dairy, so check it against your own allergies.
Standardised extract, 300 to 450 mg a day in one or two doses; A wider range of 300 to 600 mg a day is also in use. Crude dried herb, 5 to 10 grams a day split over 2 or 3 doses. A 1:5 tincture, 10 to 20 ml a day split over 2 or 3 doses. Trials generally ran 12 weeks. For children aged 6 to 12, one source gives 225 mg a day for up to 6 months. Standardization differs between products, so match the dose to the label in front of you rather than carrying a figure across brands.
No trial has compared one time of day against another, so there is no evidence-based best time to take it. Advice to take it with food rather than on an empty stomach circulates on consumer pages, but no approved source was found for it. What the trials do show is that the benefit builds with daily use over weeks, so consistency matters more than timing.
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Brahmi is not a unique name: it is used for this plant, for Gotu kola (Centella asiatica) and sometimes for a mixture of the two, plants of different families with different active compounds. Gotu kola is also the most common substitute found in Bacopa material, and the two are hard to tell apart once dried and powdered, so check the binomial on the label. Water hyssop is applied loosely across several Bacopa species. Bacopa grows in wet ground and takes up heavy metals including mercury, lead, cadmium and chromium, so look for a product with published contaminant testing.
Cautions: Bacopa can slow the way your liver clears some prescription medicines, which can raise the level of that medicine in your blood. One published case describes a woman taking cevimeline who developed sweating, nausea and a racing heart within half an hour of a supplement containing Bacopa and phosphatidylserine, settling after she stopped it. If you take a prescription medicine, check with a pharmacist or your doctor before starting. Bacopa is mildly sedating, so take care using it alongside sedative medicines or anything else that causes drowsiness. In animal tests, thyroxine rose by about 41%, so take care if you have a thyroid condition or take thyroid medication. The most common complaints are digestive: more frequent stools, nausea and stomach cramps, which are attributed to the herb's cholinergic action and to saponin irritation of the gut lining. Other reported effects are minor and usually short lived, and include abdominal pain, diarrhoea, flatulence, dry mouth, headache, dizziness, disturbed sleep and rash. Animals given 250 mg/kg a day for 28 to 56 days had reversible falls in sperm count, motility and viability with no change in libido; there is no human counterpart to that finding and it should not be read as one. Because the plant takes up heavy metals from wet soil, look for a product with published contaminant testing. Bacopa is not a known cause of liver injury and has not been linked to raised liver enzymes.
Contraindications: Do not take Bacopa if you have a slow heart rate, a blockage of the gut or urinary tract, peptic ulcer disease, asthma or chronic obstructive pulmonary disease. Its cholinergic action can make all of these worse. Do not take it if you have a thyroid condition or take thyroid medication. Do not take it if you are pregnant or breastfeeding, because no human study has looked at either.
For informational purposes only. This entry does not constitute medical advice. Consult a qualified healthcare provider before starting any supplement, especially if you have existing health conditions, are pregnant or breastfeeding, or take prescription medications.