1. Gotfried J. Constipation in Adults. MSD Manual Consumer Version. Last reviewed 2020. [internet]. 2020 [updated 2020 March; cited 2021 January 28].
Available from: https://www.msdmanuals.com/home/digestive-disorders/symtoms-of-digestive-disorders/constipation-in-adults

2. Consilini D. Constipation In Children. MSD Manual Consumer Version. [updated 2020 June; cited 2021 September 08]. Available from: https://www.msdmanuals.com/home/children-s-health-issues/symptoms-in-infants-and-children/constipation-in-childrenquery=Constipation

3. MedicineNet. Senna. Medically reviewed by Khan S. Available from: https://www.medicinenet.com/senna/article.html

4. MedicinePlus. Senna. [updated 2018 February 15; cited 2021 October 05]. Available from: https://medlineplus.gov/druginfo/meds/a601112.html

5. NHS. Bisacodyl. [updated 2021 June 14; cited 2021 October 5]. Available from: https://www.nhs.uk/medicines/bisacodyl/