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Estimating environmental exposure to analgesic drugs: A cross-sectional study of drug utilization patterns in the area surrounding Sweden's largest drinking water source
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmacy. (Läkemedelsepidemiologi)ORCID iD: 0000-0001-9778-0573
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmacy. Swedish Knowledge Center on Pharmaceuticals in the Environment, Swedish Medical Products Agency, Uppsala, Sweden.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmacy. (Samhällsfarmaci)ORCID iD: 0000-0001-5848-8625
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2023 (English)In: Environmental Advances, E-ISSN 2666-7657, Vol. 12, article id 100384Article in journal (Refereed) Published
Abstract [en]

Use of pharmaceuticals is continuously increasing globally and their residues are recognized as a risk for theenvironment. The aim of this study was to investigate drug utilization patterns of analgesics in relation toenvironmental hazard in the region surrounding Sweden’s largest drinking water source, Lake Mälaren. This wasexamined using sales data on pharmaceuticals from the Swedish E-health Agency. The total sales of analgesics(non-steroidal anti-inflammatory drugs, paracetamol, other non-opioid analgesics, and opioids) for both humanand veterinary use in the region were analyzed for the years 2016 to 2020, in relation to the inherent environmental hazard for each active pharmaceutical ingredient (API). We found that a total of 454 tons of analgesicswere sold in the region during these 5 years. Classifications of environmental hazard were available for 16 out ofthe 45 studied APIs, accounting for 98.8% of the total mass in kilograms. Paracetamol, ibuprofen, and acetylsalicylic acid, which are all classified as low-hazard compounds, were the most commonly sold APIs. Diclofenac, the only pharmaceutical classified as high-hazard, was the fifth most commonly sold API, with a total soldmass of 2321 kg. The majority of the total sold mass of analgesics originated from dispensed prescriptions forhuman use in urban areas. Visualization of drug sales for humans and animals in different settings can be used toidentify the environmental burden of pharmaceuticals. Based on our study, we suggest that additional measuresto reduce the impacts of pharmaceuticals on the environment should primarily be directed to prescribing physicians in urban areas and campaigns targeted at the high over-the-counter sales of diclofenac. Moreover, it isimportant to address the fact that many pharmaceuticals currently have limited data on environmental hazard. 

Place, publisher, year, edition, pages
Elsevier, 2023. Vol. 12, article id 100384
Keywords [en]
Analgesics, Diclofenac, Drug utilization, Environmental hazard, NSAIDs, Pharmaceutical pollution
National Category
Pharmacology and Toxicology Occupational Health and Environmental Health
Research subject
Pharmaceutical Science
Identifiers
URN: urn:nbn:se:uu:diva-526765DOI: 10.1016/j.envadv.2023.100384OAI: oai:DiVA.org:uu-526765DiVA, id: diva2:1852272
Funder
Swedish Research Council Formas, 2020-02293The Kempe Foundations, SMK-1954The Kempe Foundations, SMK21-0069Available from: 2024-04-17 Created: 2024-04-17 Last updated: 2025-10-21Bibliographically approved
In thesis
1. Pharmaceuticals in the environment - perspectives on drug utilisation and mitigation strategies
Open this publication in new window or tab >>Pharmaceuticals in the environment - perspectives on drug utilisation and mitigation strategies
2025 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The environmental impact of pharmaceuticals has emerged as a critical concern. As global pharmaceutical consumption steadily increases, the environmental issues linked to their production, use, and disposal are becoming ever more pressing. This thesis aimed to study drug utilisation in relation to environmental risk and to explore the role and responsibility of healthcare professionals in reducing the environmental impact of pharmaceuticals. The focus was on promoting environmentally informed pharmaceutical use, emphasising use-oriented measures and the roles of various healthcare stakeholders. Four interconnected studies were conducted: an analysis of analgesic sales in the region surrounding Lake Mälaren to investigate use patterns of substances with environmental concern (Paper I); interviews with key decision makers representing Swedish national and regional authorities, the pharmaceutical industry, research institutes, and academia to evaluate the content, use, and impact of two Swedish environmental knowledge support systems for pharmaceuticals (Paper II); a national questionnaire to general practitioners exploring attitudes towards integrating environmental aspects into prescribing decisions (Paper III); and focus group discussions and individual interviews with community pharmacy staff on their role in reducing the environmental impact of pharmaceuticals (Paper IV).

The findings reveal that awareness of pharmaceuticals as an environmental problem exists within healthcare, however, important prerequisites for integrating environmental aspects into practice are still lacking. Access to reliable environmental risk data for many active pharmaceutical ingredients remains limited, decision-making criteria are often unclear, and there is little concrete guidance on how to incorporate environmental considerations into everyday clinical routines.

Healthcare professionals are essential in promoting environmentally informed pharmaceutical use. Physicians and pharmacists both consider themselves to have a role and responsibility in promoting more environmentally informed use of pharmaceuticals. Their contributions include preventing pharmaceutical waste and supporting pharmaceutical stewardship. However, there is a need for education and institutional support in enabling them to take action.

Findings show that addressing pharmaceutical pollution requires action beyond the efforts of individual healthcare professionals. Strong governance and clear direction, both at the national and international levels, are essential to enable change. Environmental considerations should be systematically integrated into established decision-making structures, such as treatment guidelines, so that sustainable choices become the default rather than the exception.

By combining analyses of pharmaceutical sales data with insights into healthcare professionals’ attitudes, drug utilisation studies can generate the evidence base needed to support the systematic and broadly accepted inclusion of environmental considerations in healthcare.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2025. p. 66
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Pharmacy, ISSN 1651-6192 ; 390
Keywords
Environment, Sustainability, Rational Use of Medicines, Drug Utilisation, One Health, Pharmaceutical pollution
National Category
Pharmaceutical Sciences
Research subject
Pharmaceutical Science
Identifiers
urn:nbn:se:uu:diva-570098 (URN)978-91-513-2648-1 (ISBN)
Public defence
2025-12-12, B21, BMC, Husargatan 3, Uppsala, 09:15 (English)
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Supervisors
Available from: 2025-11-21 Created: 2025-10-21 Last updated: 2025-11-21

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Villén, JohannaNekoro, MarmarKälvemark Sporrong, SofiaWettermark, Björn

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