Friends and family members often reach out to Narcotics Anonymous as they know someone who is suffering from drug addiction. NA is a program based upon addicts helping other addicts live drug-free. One suggestion we can make is that you have information available for when that person seeks help.
Nar-anon is a 12 Step program for the friends and family members of addicts. They are not affiliated with Narcotics Anonymous, but maybe useful in helping you.
Narcotics Anonymous Literature: