Semaglutid

GLP-1 receptor agonist and the gold standard of the first generation of weight-loss injections - officially approved (Ozempic, Wegovy).

Metabolism & Weight · Not medical advice.

Evidence: Level 4 · officially approved
Type
Single peptide
Category
Metabolism & Weight
Vial code
SM
Vial sizes
5, 10, 15, 20, 30 mg
Brand names
Ozempic, Wegovy
Half-life
approx. 1 week

At a glance

Mechanism of action
GLP-1 receptor agonist: mimics the gut hormone GLP-1, curbs appetite and "food noise", slows gastric emptying and stabilises blood sugar. Modified, it lasts about a week instead of minutes.
Benefits & use
Marked weight loss and better blood-sugar control; in high-risk patients it lowers cardiovascular events by roughly 20 %.
Study status
Level 4: proven by the STEP trials (Phase 3) in thousands of participants and approved by the FDA/EMA (Ozempic, Wegovy).
Dosing note
Typical vials 5–30 mg, weekly subcutaneous dosing with slow titration. No dosing instructions - information only.

Use in the dosage calculator

Semaglutide is a GLP-1 receptor agonist and the approved gold standard of the first generation of weight-loss injections. It reduces appetite and "food noise" and stabilises blood sugar; evidence level 4.

How does semaglutide work?

Semaglutide mimics the gut hormone GLP-1: it signals the pancreas to release insulin, slows gastric emptying and dampens the hunger centre in the brain. In its modified form it stays active for about a week (instead of minutes for the natural hormone). The result is faster satiety with smaller portions and steadier blood sugar. This direct action on appetite and metabolism explains its clinical strength.

What is semaglutide used for?

Developed by Novo Nordisk for type 2 diabetes (Ozempic), it was later approved at higher doses for obesity (Wegovy) because of its strong weight-loss effect. In high-risk patients it additionally lowers cardiovascular events by roughly 20 %. For many users this means a reliable, well-studied route to sustained weight reduction. Want to save your dosing protocols? Create a free account.

What does the evidence say?

The STEP trials (Phase 3) demonstrated safety and efficacy in thousands of participants; approved by the FDA and EMA. The technological successor is tirzepatide (a dual agonist), followed by retatrutide (a triple agonist). To plan injection volumes safely, use the dosage calculator or check the FAQ.

Note: Educational information, not medical advice. Many of these substances are experimental and not approved for human use.

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