|
The main concern with pharmaceutical drugs is adverse effects, and these concerns apply to cognitive-enhancing drugs as well. Cognitive enhancers are often taken for the long-term when little data is available.[7] Dr. Corneliu E. Giurgea originally coined the word nootropics for brain-enhancing drugs with very few side-effects. Racetams are sometimes cited as an example of a nootropic with few side-effects and a wide therapeutic window.[12] In the United States, unapproved drugs or dietary supplements do not require safety or efficacy approval before being sold.[13] |
About us|Jobs|Help|Disclaimer|Advertising services|Contact us|Sign in|Website map|Search|
GMT+8, 2015-9-11 22:05 , Processed in 0.125619 second(s), 16 queries .
