Disclaimer: Don't take prescription drugs to overcome shyness or a lack of confidence. It's like looking for your lost keys outside when you lost them inside in the first place.
Let me just list a few socializer nootropics:
Adderall: More friendly, outgoing, less inhibition, more focus on the conversation, more ideas, etc
Inderol: I read a post saying that Inderol completely takes away inhibition socially. In fact, many orchestra performers with stage fright have been noted to take it.
Phenibut: Gives you that tingly love everybody feeling. I don't like it, makes me feel lazy.
Phenylpiracetam I tried this while studying and with hard work and good strategies, it worked wonders. However, the effects spilled over to after parties and I was quick witted with everything.
Input on this is appreciated. Post experiences or hear-say!