South Africa’s market for popular diabetes and weight-management medicines has grown to almost $187 million (R3 billion), with Mounjaro leading sales as Aspen Pharmacare prepares a generic alternative to medicines such as Ozempic.

Aspen chief executive Stephen Saad disclosed the latest market estimate in an interview with Reuters⁠ following the pharmaceutical company’s annual results.

The market was valued at approximately R2.2 billion earlier in 2026, indicating rapid growth in demand for GLP-1 medicines, which can regulate blood sugar, reduce appetite and support substantial weight loss.

Aspen distributes Eli Lilly’s Mounjaro in South Africa. The company said demand for the medicine contributed to a 5% increase in commercial-pharmaceutical revenue to R25.4 billion during its latest financial year.

However, not every Mounjaro sale should be classified as a weight-loss prescription.