How long does prozac take to help social anxiety?

Chemically, it can take anywhere from 2 days to 2 weeks to take effect. However, there IS a placebo effect when taking antidepressants that may cause you to feel more outgoing from the first moment of ingestion.

Remember, no medication is a cure-all. You need to start engaging in the right mental exercises and activities to trigger the behavior response you’re aiming for.

Start with some of the suggestions in this article:
http://www.stop-anxiety-panic-attack.com/lp/overcome-social-anxiety.html

Good Luck!

soon you should start to notice your anxiety lessen. very soon. for most people it does not take 4 to 6 weeks, but it may i guess.

You need to tell you doctor what you think. If he does not know he can’t help. Call and let him know.
Yes it can take 4-8 weeks to be fully effective.

You should be feeling better soon, but you may need to talk to your doctor about other depression and anxiety drugs. Prozac is old and there are new ones that do a better job.