I've never heard of anyone getting addicted from second hand smoke, but I suppose it is possible. As long as he's away from the drug, it'll eventually work it's way out of his system, and he'll be back to normal. But if drug use is a problem or if he's having cravings then a support group like narcotics annonymous could be helpful.

If you just want information on marajuana and it's side effects, there's pretty good infromation at www.camh.net CAMH is the Centre for Addiction and Mental Health and is Canada's largest psychiatric hospital. Their site is pretty easy to navigate and they have fact sheets on the most common drugs.

---splitimage