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Semaglutide (Ozempic, Wegovy, Wegovy HD, Rybelsus)

A GLP-1 receptor agonist approved for type 2 diabetes, chronic weight management and cardiovascular risk reduction.

FDA-approvedPrescription onlyBoxed warning
✍️ Written by Derek Giordano, Founder & Editor  ·  Last reviewed October 8, 2026  ·  Medical disclaimer

What Semaglutide is

Semaglutide mimics GLP-1, a gut hormone that increases insulin release when blood sugar is high, slows stomach emptying and reduces appetite. Novo Nordisk sells it as Ozempic (weekly injection for type 2 diabetes), Rybelsus (daily tablet for type 2 diabetes) and Wegovy for chronic weight management, which now comes as a weekly injection, a higher-dose weekly injection called Wegovy HD, and a daily tablet.

Regulatory status: FDA-approved (prescription)

FDA approved Ozempic in 2017, Rybelsus in 2019 and Wegovy in 2021, followed by an oral Wegovy tablet in December 2025 and Wegovy HD, a 7.2 mg weekly dose, in March 2026. All are prescription drugs. FDA declared the semaglutide shortage resolved in February 2025, which ended the shortage-based allowance for pharmacies to compound copies, and the agency has warned about dosing errors and unapproved products sold as semaglutide.

Status reflects public FDA actions and reporting as of October 8, 2026. An advisory committee vote is a recommendation, not an FDA decision, and inclusion on a compounding list is not FDA approval.

What the evidence shows

Unlike most compounds in this guide, semaglutide has large randomized trials behind it. The STEP trials established its weight-loss effect, and the SELECT trial showed a reduction in major cardiovascular events in adults with heart disease and overweight or obesity, which led to that indication being added to Wegovy's label in 2024.

Known risks and cautions

Why this page has no dosing

nnng.com does not publish doses, cycles or protocols for peptides. For approved drugs, the dose comes from the FDA-approved prescribing information and your prescriber. For unapproved compounds there is no established human dose, and numbers that circulate online are usually extrapolated from animal studies or written by sellers. If a clinician has already prescribed a dose, our reconstitution calculator converts that prescribed amount into syringe units. It is arithmetic only and does not suggest a dose.

Frequently asked questions

What is the difference between Ozempic and Wegovy?
Both contain semaglutide. Ozempic is approved for type 2 diabetes and Wegovy for chronic weight management and cardiovascular risk reduction, and they use different dose strengths.
Is compounded semaglutide still available?
Since FDA declared the shortage over in February 2025, pharmacies can no longer compound copies under the shortage allowance. Ask your prescriber or pharmacist about what is lawful for your situation.
Where does the dose come from?
From the FDA-approved prescribing information and your prescriber. This page intentionally does not restate dosing schedules.

Sources

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