I understand. I know your problem doesn't have any easy solutions. Your question was very direct and understandable; the unfortunate truth of the situation is that the answer to your question was "No."
I wish I could tell you what you wanted to hear, but the stakes are too high for that type of dishonesty. It would be absolutely awful if you had to watch Max go through something awful as a result of giving an overdose of sleeping pills or methadone.
Your problem is very real, but - unfortunately - there simply is no way to humanely euthanize a pet without the assistance of a licensed veterinarian. Access to this type of medication is - quite understandably - very strictly controlled and cannot be made readily available to the public.
While I understand your frustration and despair with your situation, please remember the terms of the website. I answered your question completely and honestly. While the facts are understandably disappointing to you, they are still the facts.
Even though you are in a tough situation and there is no escaping the fact that Max needs the care of a veterinarian as quickly as possible, I hope you will still take a moment to rate my response favorably so I receive credit for helping you today. Your rating does NOT reflect your pleasure (or lack thereof ) with your situation, but is instead only a marker for the accuracy of the information I provided you today.
If you need help with locating your closest emergency veterinary services, I can also help with that.
Thank you, ***** *****'m so sorry for your awful situation.