Natural product to modern discovery of their active ingredients and eventually to the development of new drugs. A large number of currently prescribed drugs have been either directly derived from or inspired by natural products. A few representative examples are listed below. Some of the oldest natural product based drugs are analgesics. The bark of the willow tree has been known from antiquity to have pain relieving properties. This is due to presence of the natural product salicin which in turn may be hydrolyzed into salicylic acid. A synthetic derivative acetylsalicylic acid better known as aspirin is a widely used pain reliever.
Should Have Known Better Should Have Known Better "Should Have Known Better" is a song by American singer-songwriter and multi-instrumentalist Sufjan Stevens. It is the second track and second single from his seventh studio album, "Carrie & Lowell", and was released digitally on March 11, 2015 on Asthmatic Kitty. A promotional CD was later released on Asthmatic Kitty but was not available for sale. ""Should Have Known Better"" received very positive reviews from contemporary music critics. The song was chosen upon release as Pitchfork Media's "Best New Track". Jeremy Gordon stated that, " 'Should Have Known Better' takes us back to the beginning he