Metformin

National Health Service. Metformin. 2022. Available at https://www.nhs.uk/medicines/metformin/

Cleveland Clinic. Metformin Tablets. 2025. Available at https://my.clevelandclinic.org/health/drugs/20966-metformin-tablets

Diabetes South Africa. Metformin: Type 2 diabetes drug. 2020. Available at: https://www.diabetessa.org.za/metformin-type-2-diabetes-drug/