Looking for advice on anxiety medication

I've never been prescribed this medicine but a few of my friends with really bad anxiety and social anxiety recommended Xanax or colonopin? not sure if I had spelled that one right but they told me it really helps them stay more relaxed and calm and able to think more clearly when normally being overwhelmed and too distracted to pay attention would be an issue it had seemed to keep them more calm and more productive with things that had trigger them before