"for 10 years i took a 50 mg of diphenhydramine at bedtime.  it helped me to get to sleep most of the time.  then it stopped working.  now i take trazodone and it works much better.   my initial dose was 100 mg and i slept fitfully with mild hallucinations.  i decreased the dose to 50 mg and slept much better with some dreams all pleasant and no nightmares.  now i take 25 mg at bedtime, and another 12.5 mg (1/4 pill) if i wake up during the night.  i&#039;ve been on this regimen for three months and have not had any side effects; i wake up refreshed and don&#039;t feel sleepy in the mornings."