ghk-cu tolerance desensitization effectiveness over time or peptide long-term use as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications ghk cu tolerance desensitization downregulation – The potential of GHK as

R Hanif, L Qiao , SJ Shiff , B Riga - Curcumin, a natural plant phenolic food additive, inhibits cell proliferation and induces cell cycle changes in colon adenocarcinoma cell lines by a prostaglandin-independent pathway - J Lab Clin Med -1997 Dec

Healthletic's use of the Arginine Salt version of BPC-157 supports better uptake through the digestive tract, which may help with systemic distribution when used consistently

Additionally, their larger size and chemical properties make it difficult for them to be absorbed through the intestinal wall into the bloodstream

In addition, because BPC-157 is a gastric peptide, there have been some informal reports of digestive side effects like nausea, diarrhea, appetite changes, gas and bloating related to its administration