A 2016 comparative study published in Nature Scientific Reports demonstrated that GHK-Cu produced no cytotoxicity to human keratinocytes at concentrations up to 5,800 micromolar over 72 hours and did not induce inflammatory biomarkers, unlike other copper compounds tested alongside it
The following additional adverse reactions have been reported rarely: vitiligo depigmentation, small depigmented spots, hypertrichosis, reddening (signs of keratosis pilaris), and exacerbation of recurrent herpes viral infection (i.e., herpes labialis)
If you are taking B12 supplements and suspect they may be contributing to anxiety, do not abruptly discontinue without medical advice, particularly if you have been diagnosed with deficiency
Studies in rats show increased blood vessel formation at injury sites treated with BPC-157 compared to controls
Take B complex for overall health, such as general energy and metabolism support