2020, PMID 32334036, covering mice, rats, rabbits and dogs) found BPC-157 well tolerated up to the highest specifically reported dose, 2 mg/kg in dogs, with only a reversible decrease in serum creatinine that resolved after a 2-week withdrawal
For microbiome imbalances, LL-37 offers targeted antimicrobial support
They're naturally produced in the body and have been studied for their role in wound healing and tissue repair
For this reason, copper peptides like GHK-Cu are frequently included in topical serums designed for cosmetic use
If you can reconstitute with a syringe for subcutaneous administration, you can reconstitute with a syringe for intranasal administration
Natural Killer Cells (Lymphocyte Subsets) Test Measure NK cell count and lymphocyte subsets to assess immune function, viral defence and fertility-related immunity