The short version
Semaglutide is a GLP-1 receptor agonist — a medication that mimics a naturally occurring hormone involved in blood sugar regulation and appetite. It's typically administered by injection on a schedule a provider determines.
What it is
Semaglutide belongs to the class of medications known as GLP-1 receptor agonists. It has been studied and used for diabetes management before also being studied for chronic weight management.
How it's generally used
Semaglutide for weight management is typically:
- Administered by subcutaneous injection, usually on a weekly schedule.
- Started at a lower dose, which a provider may adjust over time based on how someone responds and tolerates it.
- Used alongside a reduced-calorie diet and increased physical activity, as part of an overall plan rather than on its own.
The specific dosing schedule, starting dose, and any adjustments are clinical decisions made by a licensed provider based on an individual's situation — not something to determine independently.
Who typically discusses it with a provider
People typically bring up semaglutide with a healthcare provider when they're interested in weight management and want to understand whether a GLP-1 medication could be a fit for their situation. A provider will generally consider someone's overall health, weight-related health measures, medical history, and any other medications before making a recommendation. Body mass index (BMI) alone does not determine eligibility — it's one data point among several a clinician reviews.
What the experience tends to involve
Most people starting semaglutide can expect some adjustment period as the body gets used to the medication, and a provider will typically want to check in periodically, especially early on. For a broader look at what the first weeks tend to look like, see what happens when you start a GLP-1.
Comparing it to other options
Semaglutide isn't the only GLP-1 medication used in weight management. Semaglutide vs. tirzepatide covers how the two commonly compare, and common GLP-1 side effects covers what's typically discussed before starting.