Remember, needing help is not the same as being an alcoholic or an addict. Uncontrolled alcohol or drug use is not the only sign that someone needs help. Many people can stop whenever they choose, even for long periods of time. The important question is what happens to them when they drink or use drugs. Do they do things they regret later: get in fights, destroy property, drive under the influence, or have unplanned or unwanted sex?
There are many ways to help someone who's having trouble with alcohol or drugs. Some people just need the wake up call of your honest opinion; others can benefit from professional help to make changes in their behavior. Still others need professional help to maintain complete abstinence through rehabilitation programs and/or recovery programs. At UW there's help to know which one is right for your friend.