I have been taking amitriptyline hcl 10mg three times per day for one month. I suffer from severe panic attacks, generalized anxiety, obsessive thoughts, and insomnia. I have every known negative side effect. Confusion, suicidal ideation, increased panic attacks, depression, agitation, increased insomnia. I paged my psychiatrist and she told me to stop the medication. She said I do not have to taper down because of the low dosage. How long will this medication remain in my system? I feel as if i should be seen in the ER for I am that afraid.