I'm just out of hospital after a CTB attempt and one of the drugs was Amitriptaline. I've been told by several doctors and mental health workers the past 3 days that it's an incredibly toxic drug and rarely prescribed anymore. Trust me, it made me feel absolutely horrendous as it was coming out of my system. It was not the only medication I took.
For sleep (I'm an insomniac) it's probably been the least effective prescription medication I've ever had. I honestly see it as a pretty pointless drug unless you have inordinate quantities to attempt to CTB with. I'm talking 100's of them. Not a box or two.
Surely just smoking a spliff will help you sleep? Why would you need a pharm to go with it? If you absolutely need a pharm, benzos are the only thing that make me sleep. Z drugs like Zopiclone/Zolpidem work for a few days and that's about it. I have found a OTC drug called Kirkland Sleep Aid That works for a a few days to a week before your tolerance catches up with you. It's cheap and you can get it on eBay. It's just an old fashioned antihistamine that makes you unbelievably sleepy. Shit hangover in the morning but you at least get some shut eye.
I'm not sure what country you are in but trying to get a benzo prescription from a UK doctor for anything more than a week or two is nigh on impossible.
Not being able to sleep is horrendous and if you ask me, it's the cornerstone of fixing people's mental health problems. But doctors just seem more bothered about benzo addiction/tolerance. It's a difficult situation all round really. I feel for you, I really do.
I second that on how bad not being able to sleep is.
Also, I have more than enough unused amitriptyline to CTB at will, and could get more if I requested it from my psychiatrist, but it's not something I would consider using to end my life, not over nitrogen hypoxia (I keep a 150CF aluminum canister of P r e s t a c y c l e pure nitrogen in my car to re-inflate my tires on the road) and bottles of L O U D W O L F 99.6% pure sodium nitrite, which I use to boost my nitric oxide levels to counteract my severe congenital obstructive sleep apnea, a condition where low circulating levels of nitric oxide have been confirmed as a key causal factor, so no psychofuckup or cop anywhere has the remotest potential to challenge the motivational legitimacy of my possession of nitrogen or pure SN. (Prolife paranoid fuckwit asshats can first try banning bleach, ammonia, caffeine, alcohol, ropes, traffic, tall buildings, fast vehicles you can jump in front of, sharp objects, plastic bags, carbon dioxide, automobile exhaust, charcoal briquets and grills, fire, water, power lines, electric third rails, gasoline fumes, trains and any other of the nine billion plus methods people use to end their lives if they have the remotest problem with the availability of SN for legitimate everyday use by individuals. In point of fact, it's prolife idiots who are too stupid and ignorant to live. Anybody who ever questions why you want any CBT materials you desire can be made to feel completely retarded and utterly stupid and embarrassed by an adroit purchaser easily enough.)