Dr. Shanna Trenaman

Assistant Professor


Email: Shanna.Trenaman@dal.ca
Phone: 902-431-0559
Mailing Address: 
5968 College Street
PO Box 15000
College of Pharmacy
Dalhousie University
Halifax, NS
B3H 4R2
Research Topics:
  • Pharmacoepidemiology
  • Dementia
  • Sex- and gender based analysis
  • Polypharmacy
  • Prescribing cascades
  • Deprescribing


  • BScH (Chemistry) (Acadia University)
  • BScPharm (Dalhousie University)
  • ACPR (QEII Health Sciences Centre and Dalhousie University)
  • MAHSR (Dalhousie University)
  • PhD (Dalhousie University)
  • Selected Pharmacoepidemiology Courses (McGill University)
  • Postdoctoral Fellowship (Geriatric Medicine Research, Dalhousie University

Research interests

Dr. Shanna Trenaman is a clinician-scientist who approaches the topic of appropriate drug use in older adults from the perspectives of pharmacology, epidemiology, pharmacoepidemiology and health services research. Her research interests are in polypharmacy, deprescribing, drugs used by older adults with dementia, anticholinergic medications, sex- and gender-based differences in drug use, and medication and health services use in relation to sex and gender.

Selected awards and honours

  • Research Award: Best Research Fellow Presentation at Dalhousie University Department of Medicine Research Week “Pharmacoepidemiological assessment of fluoroquinolone related QT-interval prolonging drug interactions when treating uncomplicated urinary tract infections in women residing in long term care homes” (Oral presentation) (2022)
  • Research Award: Keith E. Borden Award for Best Oral Presentation at Canadian Association on Population Therapeutics 2021 Scientific Meeting “Patterns Of Antipsychotic Dispensation To Residents Of Long-term Care Facilities In Nova Scotia, Canada Including After A Fall-Related Hospitalization” (Oral presentation) (2021)
  • Research Award: University Internal Medicine Research Fellowship (UIMRF) Dalhousie University, 2021 (2020)

Selected publications

  • Trenaman SC, Quach J, Bowles SK, Kirkland S, Andrew MK. An investigation of psychoactive polypharmacy and related gender-differences in older adults with dementia: a retrospective cohort study. BMC Geriatr. 2023 Oct 20;23(1):683. doi: 10.1186/s12877-023-04353-8. PMID: 37864154; PMCID: PMC10590009.
  • Trenaman SC, von Maltzahn M, Sketris I, Tamim H, Wang Y, Stewart SA. Patterns of Antipsychotic Dispensation to Long-Term Care Residents. J Am Med Dir Assoc. 2023 Feb;24(2):185-191.e6. doi: 10.1016/j.jamda.2022.09.009. Epub 2022 Oct 27. PMID: 36309099.
  • Trenaman SC, Harding A, Bowles SK, Kirkland SA, Andrew MK. A Prescribing Cascade of Proton Pump Inhibitors Following Anticholinergic Medications in Older Adults With Dementia. Front Pharmacol. 2022 Jun 22;13:878092. doi: 10.3389/fphar.2022.878092. PMID: 35814221; PMCID: PMC9257131.
  • Trenaman SC, Kennie-Kaulbach N, d'Entremont-MacVicar E, Isenor JE, Goodine C, Jarrett P, Andrew MK. Implementation of pharmacist-led deprescribing in collaborative primary care settings. Int J Clin Pharm. 2022 Oct;44(5):1216-1221. doi: 10.1007/s11096-022-01449-w. Epub 2022 Jul 6. PMID: 35794285; PMCID: PMC9261167.
  • Trenaman SC, Bowles SK, Kirkland SA, Andrew MK. Potentially Inappropriate Drug Duplication in a Cohort of Older Adults with Dementia. Curr Ther Res Clin Exp. 2021 Aug 28;95:100644. doi: 10.1016/j.curtheres.2021.100644. PMID: 34589160; PMCID: PMC8458971.