"at first amitriptyline helped me sleep and for the first two nights i slept thoroughly. now i&#039;m having the opposite effect and it gives me insomnia as most ssri&#039;s do. now if i take even 10 mg it is almost impossible to sleep that night and difficult to sleep for the next 3 days. it&#039;s been 3 or 4 days since i&#039;ve taken it and i still feel like it&#039;s interfering with my sleep. if you&#039;re sensitive to ssri&#039;s do not take this for insomnia."