Stay awy from benzodiazepines like Klonopin etc, as they will put you to sleep but will interfere with your stage 4 sleep, so you will become sleep deprived even if you feel you are sleeping better. Ambien, zopiclone, and es-zopiclone are good and YES tachyphylaxis does occure requiring higher doses for the same effect, but they are better than the older sleep meds like benzos, antihistamines etc.. Rozerem can be good, but not for men or women who may become or are pregnant. Serquel can work well for some, but make sure you consult a psychiatrist or qualified medical psychologist before taking this.

Dr.S.