1. National Institutes of Health (NIH). Vitamin D. Fact Sheet for Health Professionals. [Online]. Available from: https://ods.od.nih.gov/factsheets/VitaminD-HealthProfessional/. Accessed: 07 March, 2021.
2. [S0] Vital® Vitamin D3 1000 IU soft gelatine capsules. Health supplement. This unregistered medicine has not been evaluated by the SAHPRA for its quality, safety or intended use. APPLICANT: Vital Health Foods (Pty) Ltd, Reg.no.: 51/03081/07. Lavender Lane, Kuils River, 7580, South Africa. Tel no.: (+27) 21 900 2500. Please refer to the detailed professional information (PI) for full prescribing information.