The constituent(s) accounting for the antidepressant/anxiolytic, nootropic and anti-Alzheimer’s properties of St John’s wort (SJW) extracts is uncertain but the phloroglucinol hyperforin has been described as the main cause. Although its activities in humans have not yet been thoroughly investigated, it has antidepressant-like and anxiolytic-like effects in animal models, while in vitro studies...

BACKGROUND Vetiveria zizanioides (VZ) (family: Poaceae), an aromatic plant commonly known as "Vetiver" has been used for various ailments. Concerning the various ailments being listed as the traditional uses of VZ, no mention about anxiety and memory was found. OBJECTIVE The present study examined the anxiolytic and memory enhancing activity of ethanolic extract of V. zizanioides (EEVZ) dried...

This review synthesizes behavioral research with neuromolecular mechanisms putatively involved with the low-toxicity cognitive enhancing action of Bacopa monnieri (BM), a medicinal Ayurvedic herb. BM is traditionally used for various ailments, but is best known as a neural tonic and memory enhancer. Numerous animal and in vitro studies have been conducted, with many evidencing potential medicin...