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Nootropics (/ n oʊ. ə ˈ t r oʊ p ɪ k s / noh-ə-TROHP-iks or / n oʊ. ə ˈ t r ɒ p ɪ k s / noh-ə-TROP-iks), [1] colloquially brain supplements, smart drugs and cognitive enhancers, are natural, semisynthetic or synthetic compounds which purportedly improve cognitive functions, such as executive functions, attention or memory.
Ancient silver coin from Cyrene depicting a stalk of silphium. Silphium (also known as laserwort or laser; Ancient Greek: σίλφιον, sílphion) is an unidentified plant that was used in classical antiquity as a seasoning, perfume, aphrodisiac, and medicine.
Some herbs may amplify the effects of anticoagulants. [51] Certain herbs as well as common fruit interfere with cytochrome P450, an enzyme critical to much drug metabolism. [52] In a 2018 study, the FDA identified active pharmaceutical additives in over 700 analyzed dietary supplements sold as "herbal", "natural" or "traditional". [53]
Although extracts of Ginkgo biloba leaf are often marketed as cognitive enhancers, there is no evidence for effects on memory or attention in healthy people. [ 8 ] [ 88 ] Systematic reviews have shown there is no evidence for effectiveness of ginkgo in treating high blood pressure , [ 89 ] menopause -related cognitive decline, [ 90 ] tinnitus ...
Aristolochic acid (contained in herbs in the genus Aristolochia e.g. Aristolochia serpentaria (Virginia snakeroot), Aristolochia reticulata (Texas snakeroot) and in Chinese herbs such as Aristolochia fangchi and Aristolochia manshuriensis [7] (banned in China and withdrawn from Chinese Pharmacopoea 2005; Stephania tetrandra and Magnolia ...
It is used for a variety of purposes in traditional medicine; tulsi is taken in many forms: as herbal tea, dried powder, fresh leaf or mixed with ghee. Essential oil extracted from Karpoora tulasi is mostly used for medicinal purposes and in herbal cosmetics. [112] Oenothera: Evening primrose