I tried to play racket ball about two months ago. First time I slammed into a wall with my shoulder. at age 69 nothing heals anymore. now I have what seems like a permanent pain in my shoulder. wish I knew how to get rid of it.
MSM from Jarrow and take with vitamin C. I like buffered C in the form of magnesium ascorbate made by Now Foods. Externally apply DMSO.
https://jarrow.com/products/msm-35-3-oz-2-2-lb-1000-g-powder