*I have a few questions about st.johns wort!!!?

I have been dealing with anxiety issues for about a year and a half now. it got to the point of me avoiding certain situations and my lifes become into my own little bubble. i hardly see my friends or any of that. it makes me down alot, but im not depressed or anything. today i bought st. johns wort and i want to see how well it works. i was told it'd take a few days to feel some type of difference. has anyone been on it before? and if yes, can you please share your experience? also, am i allowed to be drinking alcohol with it? i turn 21 in a month and also new years comes up so, just wondering. thank you!