Anyone take Magnesium supplements like "Natural Calm" for facial tics?!

I know I have social anxiety, I know where it stems from and why I have it etc. I know taking low dosage of xanax AS NEEDED during anxiety provoking social situations makes my tics and anxiety go away, but if I am not taking xanax, either because I was not prepared for bumping into certain people or because I do not want to become dependent on it, I get facial tics when I am stressed out, like when speaking to a girl I like, I get: grimacing, eyebrows jump, cheek and mouth twitches etc, will taking magnesium help?