Confusion between progesterone and progestin: the pharmacist’s role in preventing an unintended pregnancy

Authors

DOI:

https://doi.org/10.60103/phc.v28.e948

Keywords:

Progesterone, Progestins, Medication Errors, Community Pharmacy Services, Contraception

Abstract

This clinical case addresses a confusion between two medicines, progesterone and progestin, which leads to a prescribing error that may trigger the opposite of the intended effect. Using the Dader method as a reference, the medication-related problem (MRP) and the associated risk of a negative medication outcome (NMO) detected in this case are analysed, together with the possible intervention by the pharmacist through the action of pharmacy staff in the community pharmacy.

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References

Agencia Española de Medicamentos y Productos Sanitarios (AEMPS). Progesterona 100 mg cápsulas blandas: prospecto [Internet]. Madrid: AEMPS; [citado 1 oct 2025]. Disponible en: https://cima.aemps.es/cima/dochtml/p/62285/Prospecto_62285.html

Fedotcheva TA. Clinical use of progestins and their mechanisms of action: present and future (review). Sovrem Tekhnol Med. 2021;13(1):93-106. doi:10.17691/stm2021.13.1.11.

Reproducción Asistida ORG. Progesterona: funciones y usos clínicos [Internet]. Reproducción Asistida ORG; [citado 24 oct 2025]. Disponible en: https://www.reproduccionasistida.org/progesterona

Sociedad Española de Farmacia Clínica, Familiar y Comunitaria (SEFAC). Servicio de seguimiento farmacoterapéutico en farmacia comunitaria [Internet]. Madrid: SEFAC; [citado 14 ago 2026]. Disponible en: https://www.sefac.org/sites/default/files/sefac2010/private/documentos_sefac/documentos/BBPP_serviciossft.PDF

Sociedad Española de Farmacia Clínica, Familiar y Comunitaria (SEFAC). Guía SPFA – Foro 2024 [Internet]. Madrid: SEFAC; 2024 [citado 24 oct 2025]. Disponible en: https://www.sefac.org/system/files/2024-03/GUIA_SPFA_FORO_2024_V15_AC-digital.pdf

Published

2026-10-22

How to Cite

Zorrilla Román, O. (2026). Confusion between progesterone and progestin: the pharmacist’s role in preventing an unintended pregnancy. Pharmaceutical Care España, 28. https://doi.org/10.60103/phc.v28.e948

Issue

Section

Casos clínicos