"terrible gettin to sleep and stayin sleep. 1st tried melatonin, did nothing. was prescribed ambien, helped me get to sleep but didn&#039;t help me stay asleep thru night. was switch to ambiencr12.5mg, did exactly what i needed, helped me fall sleep and stay sleep, felt much better on those days that i needed it. couple years ago dr told me they changed rules for ambien for women cause all these people had weird reactions. me- no issues with full 12.5mg. highly upsets me, i was doing great on the reg dose. was prescribed lower dose next refill, only lasted 3-4hrs sleep, def not good :( they should start a person off on the low dose, wean u up on individual basis, for proper treatment! as no 2 pts r alike, &amp; each needs diff doses to work for them"