What is peptide stacking and how does it work?

Peptide stacking is the practice of combining two or more peptides to achieve synergistic effects, where the combined result exceeds what each peptide could produce individually. The principle relies on targeting complementary biological pathways—for example, pairing a growth hormone stimulator with a tissue repair agent. Research suggests starting with a maximum of two peptides to establish tolerance before considering additional compounds, as this approach makes it easier to identify which peptide is responsible for any observed effects.