I myself suffered severely from social anxiety, which I still have today in a much milder form, so it is possible to have success in this area. I totally don't believe in using drugs as therapy for social anxiety. They have quite nasty side effects. Rather, I found that (1) alcohol, tobacco, and caffeine helped me with social anxiety. All three of these have side effects, but since they have been around for hundreds of years, the side effects are well-known.
I found that alcohol was worthwhile as a social lubricant. Of course, it can make you really stupid, but if you are drinking socially, the people around you are also drinking, so they may not notice.
I also found these things helpful in lessening social anxiety- (2) self-help psychology books, (3) support groups (4) cognitive therapy of the self-help variety where you have a book with a series of assignments that you work on, and a journal that you write in, (5) Observing people who I noticed did not have social anxiety, and trying to imitate some of their actions.
What did not help- (1) Conventional psychotherapy, (2) Drugs, (3) Discussing problems with other people- I find that few people know how to give advice well.
Keep in mind that this is my own opinion and my own experience.