bpc 157 knee pain study 2021 Where to Inject BPC-157 for BPC-157: What It Is, What
Description
PRP injections can help alleviate painful symptoms, promote healing, and delay joint replacement surgeries

It is used in inflammatory bowel disorders and as a chemotherapy drug
PRP is an autologous blood fraction rich in platelets and their associated growth factors (GFs)

however, research has not shown an increased prevalence of a deficiency in people using these medications
Check local regulations for proper disposal methods in your area

Namely, the long-term storage of peptides at room temperature is generally not recommended, as well as repeated freeze thaw cycles (except of lyophilized peptides)