The best book on this topic (that I've read) "Why We Sleep" is uniformly against all kinds of medicine. There isn't long-term effect after 6 months (I think) o

The best book on this topic (that I've read) "Why We Sleep" is uniformly against all kinds of medicine. There isn't long-term effect after 6 months (I think) of any sleep medicine, according to certain studies. The effect literally "wears off", despite the subjective notion of the user.