"i have never been able to sleep more than 6 hrs. even when i was young.  as i aged i began having trouble sleeping more than 3 hrs at a whack. my doctor prescribed mirtazapine 15mg. at bedtime.  it has changed my life!  i sleep a full 5 to 7 hours most every night.  i actually feel normal.  i have tried various anti depressants for the last 25 yrs, effexor works best for me."