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Itching and Dryness Some users report itching or dryness around the cold sore area after using Abreva

The peptide is stable in solution at physiological pH (7.2-7.6) but degrades in strongly acidic conditions

Manufacturing, Purity, and Safety Concerns Why manufacturing matters BPC-157 is made using a complex chemical process involving: Synthetic amino acids (Fmoc-protected amino acids) Polymer resins (Rink, Wang, or PAL resin) Aggressive solvents (DMF, DCM) Reactive coupling agents (HATU, HBTU, DIC, PyBOP) Strong acids (TFA) HPLC chemicals and stabilizers In pharmaceutical-grade production, these chemicals are removed to trace levels through validated purification steps and quality control testing

[11] [12] Vitamin B12 (cobalamin) is essential for maintaining the myelin sheath that protects nerve fibers, and deficiency can cause or worsen peripheral neuropathy, presenting with symptoms similar to diabetic neuropathy