"i have taken doxepin every day for 29 years. i started taking 75 to 150 mg for depression, but once the depression lifted, i continued taking 10-25 mg a day for insomnia. it has been a lifesaver for me as, since my teens, i have not been able to sleep without a sleep aid, over-the-counter, prescription. doxepin allows me to fall asleep and stay asleep for 6-8 hours. when i started taking it i gained 10 lbs. in a week and have never lost it. i have dry mouth, but that is an inconvenience that i am willing to put with. i tried to wean myself off once, about 10 years ago, but felt very bad flu-like symptoms so i started taking them again. in the past 5 years so 10mg doesn&#039;t always do the job and so i often take 20 mg."