The Complete Guide to Weight Loss Injections in NZ: Wegovy, Saxenda, Ozempic

Medical weight loss is evolving, and in New Zealand, injectable GLP-1 medications like Wegovy, Saxenda, and Ozempic have quickly become some of the most effective options available. If you’re exploring treatment, this guide gives you a full overview of how these medications work, how they compare, and what to expect.

What Are GLP-1 Weight Loss Injections?

GLP-1 receptor agonists are a class of medications originally developed to treat type 2 diabetes. They mimic a natural hormone (glucagon-like peptide-1) that helps regulate blood sugar, slow digestion, and reduce appetite. The result? Many people feel fuller sooner, eat less, and lose weight, all while preserving muscle mass.

Three GLP-1 medications are now commonly prescribed for weight loss in New Zealand:

• Wegovy (semaglutide)
• Saxenda (liraglutide)
• Ozempic (semaglutide, off-label for weight loss)

Each one has different strengths, dosing schedules, and cost considerations.

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GLP-1 Comparison Table

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Wegovy: The Most Effective Option

Wegovy contains semaglutide at a higher dose than Ozempic and is specifically approved for weight loss. It’s taken once a week and gradually increased over 16 weeks to reach the full 2.4 mg dose.

Why people choose Wegovy:

• Highest average weight loss (~15%)
• Weekly dosing, no daily injections
• Lower long-term cost vs Saxenda
• Approved for use in NZ

Most patients tolerate Wegovy well, especially when starting with the lower 0.25 mg starter dose.

Saxenda: A Proven Option, But Less Convenient

Saxenda uses liraglutide, another GLP-1 medication. It’s injected once daily and approved for weight loss, but studies show it produces less weight loss on average than Wegovy.

Why people still use Saxenda:

• Traditionally available in more pharmacies (now changing)
• Trusted by some GPs and specialists
• Well-known with a longer track record

However, daily injections and higher long-term cost can be a barrier for some.

Ozempic: Off-Label for Weight Loss

Ozempic also contains semaglutide, but it’s approved for type 2 diabetes, not weight loss. That said, some doctors prescribe it off-label for patients seeking weight loss, especially when Wegovy isn’t available.

What to know about Ozempic for weight loss:

• Same ingredient as Wegovy, lower dose
• Maximum dose is 2.0 mg/week (vs 2.4 for Wegovy)
• Results vary; studies show 5–10% average weight loss
• Typically costs about the same as Wegovy, despite lower dose

It can be a fallback option, but most people switch to Wegovy when access improves.

Are These Medications Safe?

All three medications are generally safe and well tolerated. The most common side effects are mild and temporary, including:

• Nausea
• Diarrhea or constipation
• Headache
• Fatigue
• Bloating or abdominal discomfort

Side effects usually settle within the first 2–4 weeks and are reduced by starting with a low dose.

More serious side effects (like pancreatitis or gallbladder issues) are rare. These medications should not be used by people with a personal or family history of medullary thyroid carcinoma or MEN2 syndrome.

How to Get a Prescription in NZ

You’ll need a prescription from a New Zealand-registered doctor. Some GPs are experienced in GLP-1 treatment, while others may not yet be familiar with these newer medications.

Well Revolution offers convenient access to online consultations, prescribing (if appropriate), and ongoing treatment support with a dedicated GP and care team — all for a flat $80 fee.

Ready to Get Started?

At Well Revolution, we offer a free initial consultation to determine if Wegovy, Saxenda or Ozempic is safe and appropriate for you.

If prescribed, your $80 treatment plan includes:

• A prescription for 3 months of treatment
• A custom titration schedule
• Three months of expert medical care and follow-up
• Access to your dedicated doctor and care team any time

Start right now, right here from this page. Live chat with our care team. No app to download, no forms, no waiting.

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