I have chronic shoulder pain. I am a heavy lifter at the gym. I don t want to lift less, eventhough I do know it s best. I rehabbed my shoulder for 8 months to 90% Imo. Now it s back to pain with heavy lifting. I ve tried glucosamine, I ve try joint supplements, fish oils, no change. I was told cortisone shot would mask to pain, and give it a chance to heal. Also a more natural way but less effective would be b12 shot. What would you recommend. (And don t say lift less) :)BTW I m 28 years old Thank you for your time Mark Mines