Oxycontin is an opiate and if you google opiates you will find the info you need. When someone is craving opiates they get really moody. People abusing oxy can swallow them or crush them and snort them or chew them. Some addicts even inject them. Oxys are very powerful and easily addicting. My daughter started on oxycontin and then graduated to heroin. When an opiate addict tries to quit they get very, very sick, like a bad case of the flu. If your boyfriend is using them and he is addicted to them, it is very difficult to quit. And his usage will just continue to increase. They are expensive. My daughter and her boyfriend spent about $6000 on oxys in a very short period of time. I hope that you find the info that you need. Opiate addiction is one nasty addiction. Marle