Therapeutic Peptides in Aesthetic, Metabolic and Endocrine Conditions: Effects, Safety, Clinical Applications, and Future Perspectives For research & education only, Front shoulder pain from daily work? Youre not alone., Repetitive strain = tendon overload = long term damage if ignored., Peptides like BPC 157 & TB 500 are being Peptide BPC 157(HEXADECAPEPTIDE) Synthagen Synthagen PL Taking BPC 157 and TB500 daily for 6 months after tearing my rotator cuff. My shoulder still has pain but Ive been able to do lifts and gain strength that I couldnt have done months earlier.