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Current regulator label
A neutral reference on semaglutide: its GLP-1 mechanism, FDA-approved prescription status, once-weekly subcutaneous route, and common vial sizes, so you understand the drug before using our separate dosage calculator for the math.
Semaglutide dosage calculator →
Arithmetic only, not medical advice.
Semaglutide: reference record
| Regulatory status | FDA-approved prescription for labeled indications |
|---|---|
| Route | Subcutaneous |
| Dosing frequency | Once weekly |
| Published range | 0.25–2.4 mg |
| Evidence basis | Current regulator label |
| Common vial sizes | 5, 10, 30 |
Sources
- FDA prescribing information (Semaglutide) - accessdata.fda.govBasis for the regulatory status, route, frequency and published range in the table above. Source last checked 2026-06-24
What is Semaglutide?
Semaglutide is a GLP-1 receptor agonist, a synthetic peptide that mimics a gut hormone involved in blood-sugar regulation and appetite. It is the active ingredient in prescription products for type 2 diabetes and chronic weight management, and it also exists in an oral tablet form on a different dosing scale.
Is Semaglutide FDA-approved?
Yes. Semaglutide is FDA-approved as a prescription medicine for its labeled indications, and the reference figures here come from the current FDA label. That approval applies to the licensed products, not to compounded or research-grade powder sold under the same name.
How is Semaglutide given?
The licensed injectable is given subcutaneously, once weekly. Commercial pens are supplied pre-filled at a labeled concentration. Oral semaglutide is a separate product on an entirely different scale and cannot be converted to an injectable amount.
What are the known safety concerns with Semaglutide?
It is prescription-only. A critical distinction: oral semaglutide uses different dosing from the injectable and must never be converted between the two. Indication, contraindications and monitoring belong with a prescriber.
Wegovy: 0.25 mg weekly weeks 1-4, then 0.5, 1.0, 1.7; usual maintenance 2.4 mg
Commercial Wegovy is prefilled. Use only the labeled concentration or pharmacy directions.
Prescription-only; oral semaglutide uses different dosing and must not be converted with this injectable calculator.
Supply-chain quality · Finnrick
Avg quality score
6.9
/10
Purity range
98.34
–
99.99
%
Qty divergence
±
38
%
Vendors · samples
52
·
315
Common vial sizes
5, 10, 30
mg
Test window
Dec 2024 - May 2026
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