Sub Question

What is this sub that I continue seeing everyone talking about. Nowhere I am located does it seem accessible. What is it and what does it do? Are we talking about Methadone? Also, with all due respect, if it's a sub how is it helpful in kicking the habit? Does it not still give the same feelings as the pills themselves? Just curious and would like to know. Seems everyone who posts who is on "sub" is doing well where others who are not taking "sub" are struggling. I am certainly not insulting anyone who takes it whatsoever but in fact am congratulative to those who are committed to their recovery in what ever means possible. I am just very curious as to what sub is.
http://www.suboxone.com/patients/suboxone/

http://buprenorphine.samhsa.gov/


Here you go, a ton of information about it. Suboxone, Subutex and buprenorphine are all the same drug you may see posters refer to all three.