Wegovy vs Saxenda in South Africa: Which GLP-1 Injection Should You Choose?

If your doctor has raised the possibility of an injectable weight loss medication, there is a good chance two names have come up: Wegovy and Saxenda. Both are approved for chronic weight management, both work on the same broad hormonal system, and both have been used by South African patients for years. But they differ in a way that matters for day-to-day life -- one is a once-weekly injection, the other is a once-daily injection -- and their price tags, side effect profiles, and results are not the same either. Here is the honest, practical breakdown.

Quick Comparison: Wegovy vs Saxenda at a Glance

Dosing Schedule: Once a Week vs Once a Day

This is the most practical, day-to-day difference between the two medications. Wegovy is injected once a week, on the same day each week, at any time of day, with or without food. The dose is escalated slowly over about four months: starting at 0.25mg and stepping up every four weeks to 0.5mg, 1mg, 1.7mg, and finally the maintenance dose of 2.4mg.

Saxenda is injected once a day, ideally at a similar time each day, and can also be taken with or without food. Its dose escalation is faster -- typically over five weeks -- starting at 0.6mg and increasing weekly to 1.2mg, 1.8mg, 2.4mg, and the maintenance dose of 3mg.

Cost in South Africa (2026)

Cost is often the deciding factor for South African patients, since GLP-1 medications are rarely fully covered by medical aid. Here is the current picture:

• Wegovy: approximately R4,500 - R6,000 per month at maintenance dose, available at Dis-Chem, Clicks, and independent pharmacies with a script.
• Saxenda: approximately R3,000 - R4,200 per month at maintenance dose, also widely available at major pharmacy chains.
• Medical aid coverage: Some Discovery, Bonitas, and Momentum plans offer partial coverage for either medication under chronic weight management or obesity-related benefit programmes, but this varies significantly by plan and usually requires pre-authorisation. Check our guide on GLP-1 medical aid coverage in South Africa for the details.
• Cost per kilogram lost: Because Wegovy typically produces roughly double or triple the weight loss of Saxenda, its higher monthly price does not necessarily mean a higher cost per kilogram of weight lost over a full treatment course.

Availability and Stock in South African Pharmacies

Both medications are manufactured by Novo Nordisk and are SAHPRA-approved for chronic weight management in adults with obesity (BMI 30+) or overweight (BMI 27+) with a weight-related health condition. Wegovy has occasionally experienced stock shortages since its 2024 South African launch, driven by global demand outstripping supply -- ask your pharmacist to notify you when new stock arrives, or ask about their waiting list.

Saxenda, having been on the South African market since 2016, generally has more stable and predictable stock availability. If you are struggling to source Wegovy during a shortage period, some doctors will suggest starting or bridging with Saxenda in the interim, since it uses a different molecule (liraglutide rather than semaglutide) and is not affected by the same supply constraints.

Side Effects Compared

Both drugs belong to the GLP-1 receptor agonist class and share a broadly similar side effect profile, dominated by gastrointestinal symptoms during dose escalation:

Because liraglutide has a shorter half-life than semaglutide, some patients find Saxenda's side effects settle more quickly if a dose is reduced or paused. Semaglutide's longer half-life means side effects from a Wegovy dose can linger for several days if it does not agree with you. Both medications carry the same class warnings around pancreatitis, gallbladder disease, and a theoretical risk of thyroid C-cell tumours -- anyone with a personal or family history of medullary thyroid carcinoma or MEN 2 syndrome should avoid both.

Who Might Suit Each Medication Better?

Wegovy might be right for you if:

• You want the most effective SAHPRA-approved weight loss injection currently on the South African market
• You prefer the convenience of a once-weekly routine over a daily injection
• Your budget can stretch to R4,500-R6,000 per month, or your medical aid offers partial cover
• You are comfortable navigating occasional stock shortages at your pharmacy

Saxenda might be right for you if:

• You want a more budget-friendly entry point into GLP-1 therapy
• You prefer a daily routine with smaller, more gradual dose steps
• You want a medication with a longer real-world safety track record in South Africa
• Wegovy is out of stock at your pharmacy and your doctor recommends bridging with liraglutide
• You had side effects on semaglutide and want to try a different GLP-1 molecule

Switching Between the Two

Moving from Saxenda to Wegovy (or vice versa) is a common conversation once a patient has been on either medication for a few months. Typically your doctor will have you finish your current Saxenda pen or complete your current Wegovy dose step, then start the new medication at its lowest dose and titrate upward following the standard schedule. Expect a fresh, usually milder, round of gastrointestinal side effects during the transition, and always inform your pharmacy and medical aid of the switch for billing and stock-ordering purposes.

The Bottom Line

For most South African patients starting GLP-1 therapy from scratch, Wegovy is the more effective option and its once-weekly schedule is generally easier to live with. Saxenda remains a solid, more affordable alternative -- particularly useful when Wegovy is out of stock, when budget is the main constraint, or when a patient prefers a daily routine with a longer safety track record. Neither choice is wrong; the right one depends on your budget, your tolerance for injections, and how your body responds.

Always consult a registered doctor or healthcare provider before starting, switching, or stopping any weight loss medication.