{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T17:47:27Z","timestamp":1782841647485,"version":"3.54.5"},"reference-count":61,"publisher":"JMIR Publications Inc.","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JMIR Mhealth Uhealth"],"abstract":"Abstract<\/jats:title>\n \n Background<\/jats:title>\n Over-the-counter (OTC) medicines are frequently used during pregnancy. As these medicines are often used without medical supervision, accessible and reliable safety information is essential. However, finding reliable and understandable information on the safety of these medicines during pregnancy is often experienced as difficult. Hence, there is a need for a new easily accessible electronic health (eHealth) tool that empowers women to actively seek information to support safer self-medication practices during pregnancy and breastfeeding.<\/jats:p>\n <\/jats:sec>\n \n Objective<\/jats:title>\n This study aimed to describe the development and dissemination process of a Dutch mobile app providing reliable safety information on OTC medicines during pregnancy and breastfeeding using a development and formative evaluation approach.<\/jats:p>\n <\/jats:sec>\n \n Methods<\/jats:title>\n The app was developed over a 2-year project comprising 5 phases, including preparation, development, preimplementation, implementation, and evaluation. Mixed-method strategies, including questionnaires, focus groups, and user feedback rounds, were applied to involve the target population in the development process. Medicine safety information in the app was based on the latest scientific evidence. First-year app-usage outcomes included app downloads, usage patterns, and information-seeking behavior.<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n Input from 253 potential users formed the foundation for the development of the MediMama app (Netherlands Pharmacovigilance Centre Lareb), with users expressing a need for clear, reliable, and easily accessible information on medication safety during pregnancy and breastfeeding. The app was launched on Mother\u2019s Day 2024 and provides safety information on over 250 OTC medicines, including supplements and herbal remedies, across 27 medicine categories. Promotion occurred through multiple online and offline channels. During its first year, the MediMama app was downloaded 22,415 times, with an average of 370 unique daily users, indicating substantial user engagement. Information on paracetamol (acetaminophen) and nasal sprays was most frequently accessed, reflecting the need for information on commonly used OTC medicines among the target population.<\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n One year after its launch, the MediMama app is considered a promising tool in maternity care, meeting the target population\u2019s need for accessible OTC medicine safety information. The app aims to support informed decision-making, contributing to safer medication use during pregnancy and breastfeeding. Further research is required to evaluate the effectiveness of the implementation strategy, as well as the app\u2019s impact on maternal medication use behaviors and health outcomes.<\/jats:p>\n <\/jats:sec>","DOI":"10.2196\/85948","type":"journal-article","created":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T20:11:06Z","timestamp":1775160666000},"page":"e85948-e85948","source":"Crossref","is-referenced-by-count":0,"title":["Development and Launch of a Dutch Mobile App (MediMama) on Over-the-Counter Medication Safety During Pregnancy and Breastfeeding: Development and Usability Study"],"prefix":"10.2196","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2925-8174","authenticated-orcid":false,"given":"Veronique YF","family":"Maas","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3723-0649","authenticated-orcid":false,"given":"Maud","family":"de 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