Is this a safe dose of amitriptyline (Elavil)?

OK so I used to take amitriptyline (10mg) to help treat my sleep disorder and after cutting it off completely after 3 years of use, I found another bottle of it in my dad's bathroom. It seemed suspicious but they all appeared to be there. Then two days later I happened to check to see if any were gone and there were only 3 left from the 30 that were there two days earlier. So my question to any doctors or pharm students is a dose of around say 270mg of elavil safe to ingest in a maximum amount of time of 36 hours?