The short answer is yes — and the fact that the answer surprises people is a good sign of how loosely these words get thrown around. "Peptide" has come to mean something vaguely wellness-adjacent, which is not what it means at all.
Part of our complete guide to medically supervised weight loss.
What a peptide actually is
A short chain of amino acids. That is the whole definition. Amino acids are the building blocks of protein; string a few together and you have a peptide, string a lot together and you have a protein. The line between the two is a matter of length, not category.
Your body makes thousands of them. Insulin is a peptide. So is oxytocin. So are the GLP-1 medications everyone is talking about — semaglutide and tirzepatide are peptides that resemble hormones the gut already produces, which is precisely why they work on the receptors they do.
Peptide isn't a category of wellness product. It's a description of length.Privé Aesthetics
So why do the two sound like different things?
Because in practice the words have been given jobs they were never meant for. "GLP-1" has come to mean prescription weight management. "Peptide therapy" has come to mean a menu of shots for recovery, sleep, energy and skin. Both are peptides. The difference is not chemistry — it is what each one does, what the evidence behind it looks like, and how tightly it is regulated.
- Compounded semaglutide and compounded tirzepatide — prescription, physician supervised, labs first, monitored monthly. The evidence base here is substantial.
- The wider peptide menu — a range of compounds with genuinely varied levels of evidence behind them, prescribed selectively and not to everyone who asks.
- Topical peptides in skincare — a different thing again, applied to the surface, and a reasonable ingredient rather than a miracle.
What "compounded" means
It means the medication is prepared by a licensed compounding pharmacy rather than supplied as a mass-manufactured product. It is still a prescription, it still requires a prescriber, and it still requires supervision. It is not a supplement, and anyone describing it as one has told you something important about how they operate.
The honest part
Not every peptide on every clinic's menu is supported by the same weight of evidence. Some are well studied. Some are promising and early. Some are marketed far ahead of what is known. We will tell you which is which for anything you ask about, including when the honest answer is "the research is thinner than the marketing."
We also will not prescribe a peptide because someone asked for it by name. Labs, history, and a reason come first — and sometimes the answer is that it is not indicated for you.
Where to start
A consultation and blood work. That is the same first step whether the conversation ends up being about weight, recovery or longevity, because all three depend on what is actually going on rather than what you have read.