Original sentence: Manufacturer's marketing claims for nootropic dietary supplements are usually not formally tested and verified by independent entities.Racetams — piracetam and other compounds that are structurally related to piracetam — have few serious adverse effects and low toxicity, but there is little evidence that they enhance cognition in individuals who do not have cognitive impairments.The use of prescription stimulants is especially prevalent among students
Edited sentence: Bacopa monnieri A herb sold as a dietary supplement.Racetams—piracetam and other compounds that are structurally related to piracetam—have few serious adverse effects and low toxicity, but there is little evidence that they enhance cognition in individuals who do not have cognitive impairments.The use of prescription stimulants is especially prevalent among students attending academically competitive colleges.There is some preliminary evidence for memory-enhancing effects.While scientific studies support the beneficial effects of some compounds, manufacturer's marketing claims for dietary supplements are usually not formally tested and verified by independent entities