There is no reason you can not take Tylenol and amitriptyline at the same time. They do not work on the same systems

btw, spelling amitriptyline is quite an effort. Does your spell check underline it? Mine does and makes a strange suggestion for the proper spelling. Tell you later. Don't want to ruin the fun of spell check.

Drugs.com said this

amitriptyline/perphenazine
Tylenol (acetaminophen)
Interactions between your selected drugs

There were no interactions found in our database between amitriptyline/perphenazine and Tylenol

However, this does not necessarily mean no interactions exist. ALWAYS consult with your doctor or pharmacist. (this is the normal disclaimer)

My best to you.