Bacopa is an herb which has been used medicinally for thousands of years. Recent studies have shown it to possess a wide variety of nootropic properties.
What Is Bacopa?
Bacopa is a perennial herb that is commonly found in wetlands and muddy shores throughout India, Nepal, Sri Lanka, China, Taiwan, Vietnam, and some southern states in the USA. This plant has been commonly used in India for Ayurvedic medicine for thousands of years. According to Western medicine, Ayurvedic medicine is an alternative form a medicine used to complement, rather than replace, the treatment regimen existing between a patient and their physician. Since Bacopa’s early uses in Ayurveda countless studies have been performed which have revealed Bacopa to have many nootropic cognitive enhancing abilities.
Bacopa Dosage Information
Dosages tend to vary for Bacopa. Generally, people take between 100-300 mg once or twice daily. It is recommended that someone use the lowest dosage that works for them. You should start around 100mg twice daily and if you feel no side effects and want more of an effect then up your dosage as necessary. For children, the recommended dosage is no more then 100-200 mg per day in divided doses.
How Does Bacopa Work?
Though scientists are not completely clear on the exact mechanism of Bacopa they have made some determinations. Bacopa increases the amount of the neurotransmitter serotonin in the brain. Low serotonin levels are linked to depression giving Bacopa anti-anxiety and mood boosting effects. Bacopa also stockpiles two P450 enzymes, EROD and PROD. There two enzymes are used when our brain encounters stressful situation meaning Bacopa lowers our susceptibility to stress. Bacopa’s wide array of cognitive enhancement capabilities are believed to stem from its ability to enhance neuronal synthesis and restore synaptic activity.
Safety and Side Effects of Bacopa
Bacopa is known to be extremely safe. There have been no published studies revealing any sort of significant side effects that result from consuming Bacopa. Some anecdotal side effects include dry mouth, nausea, drowsiness, and muscle fatigue. One study found that the effects of chlorpromazine, a drug in the same family as perphenazine, were enhanced when a bacopa extract was taken along with it. Until more is known it is recommended that those taking any drug in the phenothiazine family not take bacopa. 
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Another study conducted in 2002 at the University of Wollongong, Australia, examined the effects of Bacopa monniera on the human memory. Seventy-six adults aged between 40 and 65 took part in a double-blind, randomized, placebo controlled study. Testing was conducted prior to the trial, three months into the trial, and six weeks after the completion of the trial. The results showed a significant effect of Bacopa on retention of new information three months into the trial. The results returned to normal six weeks after the trial had ended. 
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8. Morgan A, Stevens J “Does Bacopa monnieri improve memory performance in older persons? Results of a randomized, placebo-controlled, double-blind trial” Journal of Alternative & Complementary Medicine – New York 2010 Jul;16(7):753-9