Peptide Knowledge Base · Metabolic
Semaglutide: what it is, what the evidence says, and its real status
A GLP-1 medicine that lowers appetite and blood sugar, the most-studied molecule in the whole category.
Short version: this is the real, trial-grade end of 'peptides.' Large randomized human trials, FDA-approved branded versions, and a compounded route under clinician care. We talk about the path, not just the molecule.
Can you actually get it?
Plain-English verdict: Available.
Regulatory status: FDA-approved (branded) · 503A compounded · Available now.
Available now through a clinician. Branded versions are FDA-approved; compounded semaglutide is not FDA-approved and supply is winding down, your clinician decides if it fits.
How does Semaglutide work?
A GLP-1 receptor agonist that slows gastric emptying and signals satiety, reducing appetite and improving glycemic control.
What it does — and what it does not do
What it does: Reduces appetite and supports meaningful weight loss and blood-sugar control, with the strongest human evidence in the category.
What it does not do: It is not a cosmetic shortcut and not risk-free; compounded forms are not FDA-approved, and we make no guaranteed-loss claims.
How honest is the evidence?
Evidence grade A — multiple large randomized controlled trials in humans (STEP program). Read our grading methodology for what each grade means.
What we still don't know: Long-term outcomes of compounded (vs. branded) formulations are less characterized; durability after stopping depends heavily on the habits built alongside it.
WADA status: Not prohibited.
How it is taken
What the literature reports: weekly subcutaneous, titrated slowly. Educational only, your clinician sets any dose.
Who should not take it
Personal/family history of medullary thyroid carcinoma or MEN-2; pregnancy. Discuss GI and gallbladder history with a clinician.
Sources
Wilding et al., STEP trials (NEJM 2021) · FDA labeling (Wegovy/Ozempic)
Compounded medications are not FDA-approved. We keep two signals separate and never collapse them: whether you can get something, and what the rule currently says. See the live FDA Peptide Tracker or the knowledge base.
Last reviewed 2026-08-11 · Peptós.LIFE · Not medical advice.