1. DrugBank Online. Diphenhydramine. (2021). Accessed: June 13, 2021: https://go.drugbank.com/drugs/DB01075.
2. Saudi Food and Drug Authority. Diphenhydramine. (2021). Accessed: June 26, 2021: https://www.sfda.gov.sa/ar/drugs-list.
3. Drugs.com. Diphenhydramine side effects. (2021). Accessed: June 26, 2021: https://www.drugs.com/sfx/diphenhydramine-side-effects.html.
4. Over-the-counter medications containing diphenhydramine and doxylamine used by older adults to improve sleep;Abraham O;Int J Clin Pharm,2017
5. The prevalence of sleeping pills and factors associated with their use among primary care patients, in Riyadh, Saudi Arabia;Aljohani EM;IJMDC,2019