Peptides 101: A Practical Guide to the Modern Toolkit
From BPC to NAD+ — what peptides are, how they're studied, and how to think about them responsibly.
What is a peptide?
Peptides are short chains of amino acids — smaller than proteins, larger than single amino acids. Your body already produces thousands of them for signaling everything from tissue repair to hormone regulation.
Why the interest?
Modern research peptides are highly specific: they can be designed to bind a single receptor or mimic one physiological signal. That specificity is what makes them a fast-growing area of clinical research.
Sourcing matters
Peptide quality varies dramatically. Vita Renewal sources exclusively from US-licensed manufacturers and 503A compounding pharmacies, with third-party purity and potency testing on every batch.
Working with a physician
Because most peptides fall outside classic FDA-approved indications, physician oversight is essential. Your provider will design a protocol appropriate for your goals and monitor progress.
