Some of the best results worldwide in helping people fight alcohol and drug abuse have come through Alcoholics Anonymous and Narcotics Anonymous.
Alcoholics Anonymous (AA): http://aagsoindia.org, e-mail and web links to individual city sites. Bangalore (Ph: 24144029, 56701632);Chennai (24355605, 26441941), Delhi (9811908707, 55684980); Calcutta (22841202); Mumbai (24122203, 23075134).
Narcotics Anonymous (NA): www.naindia.org; www.angelfire.com/in/nadelhi, both sites carry links to other NA centres in India and abroad. Can also be e-mailed: in Bangalore (firstname.lastname@example.org); Chennai (email@example.com), Delhi (firstname.lastname@example.org, Mob: 9818072887); Calcutta (email@example.com); Mumbai (firstname.lastname@example.org).
Though AA and NA may differ...