Mounjaro arrived in late 2024 and reshaped the local landscape within a year. This is an editorial guide for South Africans considering it.
Tirzepatide, sold as Mounjaro, is a once weekly injection that became the highest selling pharmaceutical product in South Africa in late 2025. This guide explains what it is, who it is for, what the trial evidence shows, and how to think about it as a treatment option.
Long form analysis on what Mounjaro is, how it works, what the evidence actually shows, and what its arrival means for South African patients.
By November 2025 it had eclipsed every other pharmaceutical sold in South Africa. The story of how a single weekly injection rewrote the local prescription market, told through clinical data, pricing decisions, and the Aspen partnership.
Wegovy works on one receptor. Mounjaro works on two. The dual GIP and GLP-1 mechanism is what produces tirzepatide's stronger trial results. A plain English walkthrough of what the second hormone actually does.
Both available, both approved. After a year of head to head competition in the SA market, here is the honest comparison.
The clinical programme that built Mounjaro's case for type 2 diabetes. What each trial measured, and what the numbers showed.
Semaglutide generics are coming. Tirzepatide is a longer wait. The patent picture explained.
If you have already decided to consult about Mounjaro, these are the pages that answer the actual questions.
From 2.5 mg starting dose through 15 mg maintenance. Why the schedule is structured the way it is, and how it actually plays out month by month.
What is common, what is rare, what is serious. Honest information without overselling tolerability or fearmongering rare events.
Beyond the per-pen sticker price. What a year of treatment actually costs in SA, including consultations, titration, and the medical aid picture.
The SAHPRA criteria, and the medical considerations that matter beyond the BMI threshold.
The original indication. What the SURPASS data showed.
PCOS, contraception interaction, fertility planning.
What an online assessment with Online Doctor SA actually involves.
Ten minutes online. Reviewed by a registered SA doctor. Prescription emailed if appropriate.
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