Should I take this Supplement?

I’m 17 years old and I’ve had tendonidis in my pitching elbow in the past. I was wondering if I should take SuperCissus RX to prevent injury this year. I was also wondering if It’s legal for highschool and college athletes to take. Thanks.

I took this when I had a partial tear in a tendon in my hand. I didn’t feel like it was doing anything and got more out of msm as a supplement. It is completely legal though.