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Semaglutide

GLP-1 receptor agonist

Prescription medicine

What it is

A GLP-1 receptor agonist registered for type 2 diabetes and chronic weight management.

What the evidence shows

Among the best-evidenced peptides covered here: large randomised trials support its registered diabetes and weight-management indications. That evidence applies to the approved, brand-name products.

Safety & reported risks

Common side effects are gastrointestinal (nausea, vomiting, constipation). Prescribers weigh contraindications and monitor use. "Compounded semaglutide" and online copies sit outside that assurance and have drawn regulator warnings.

Status in Australia

A registered prescription medicine in Australia under defined brand names and indications. Supply is via prescription and dispensing pharmacy.

How it’s lawfully accessed

Lawful access is via a prescription from a registered doctor and dispensing through a pharmacy, subject to availability. PBS subsidy applies only to specific criteria.

Related peptides

TirzepatideDual GIP/GLP-1 agonistPrescription medicineLiraglutideGLP-1 receptor agonistPrescription medicineRetatrutideTriple-agonist (investigational)Investigational

Frequently asked questions

Is semaglutide legal in Australia?

Yes — registered brand-name semaglutide is a lawful prescription medicine. The caution is around unapproved "compounded" or online versions, which are a different regulatory question.

Is semaglutide subsidised on the PBS?

Subsidy applies only to specific registered indications and criteria. Many weight-management uses are private-script and not PBS-subsidised. A prescriber can confirm your situation.

Sources & further reading

This entry is general information about Semaglutide, not a recommendation to use it. We don’t provide dosing, protocols or sourcing. Speak to a registered practitioner.

Written by The Peptides.au editorial team
Editorial review Checked against current TGA, ARTG and AHPRA public guidance
Last updated 1 June 2026

This is general education, not medical advice. Peptides.au does not sell, supply, recommend or promote any product or clinic. Always speak with a registered Australian health practitioner before making any health decision.