Are there medicines that deal with social anxiety?

Yes: there are several medication classes that may be used depending on your history, health, and degree of symptoms. Visit: http://www.mayoclinic.org/diseases-conditions/social-anxiety-disorder/basics/treatment/con-20032524 for some additional information on treatment of social anxiety. To get started with exploring options talk to a primary care provider or seek a consult from a psychiatrist.

Yes.: Yes there are a number or medicines that can help with social anxiety. "Social Anxiety" is a broad term which includes various things, and the medicines work with variable effectiveness. When they are limited, often psychotherapy is helpful.