SynthesisDrug safety2026
Presence of Benzodiazepines in Aquatic Environments: A Systematic Review of the Literature.
Synthesis in Drug safety, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionPharmaceuticals in aquatic environments are a growing environmental concern. Because of their widespread use and poor removal by conventional wastewater treatment, benzodiazepines are frequently detected in treated effluents.
objectiveTo synthesise global evidence on the occurrence and distribution of benzodiazepines and their metabolites across the urban water cycle.
methodsThe Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed in performing this systematic review. Bibliographic databases PubMed (including PubMed Central and Medline), Embase and Scopus were searched, from the inception date to July 26th, 2024, using query terms related to benzodiazepines (BDZs) and water pollution. Titles, abstracts and full text of the articles were independently evaluated by six review authors.
resultsOf 1973 records identified, 119 studies published between 2001 and 2024 met the inclusion criteria. Most research (N = 102) was conducted in European countries, followed by Asia (N = 29), America (N = 16), Africa (N = 5) and Australia (N = 2). Reported BDZ concentrations varied widely across the included studies, ranging from below analytical detection limits to several thousand ng/L, depending on the specific compound, sampling strategy, analytical technique, and environmental matrix. Most of the included studies searched BDZs in surface water (N = 61), followed by wastewater treatment plants (WWTP) effluents (N = 47) and WWTP influents (N = 40). Diazepam (N = 64 studies), oxazepam (N = 58 studies), lorazepam (N = 45 studies), temazepam (N = 31 studies) and alprazolam (N = 29 studies) were the most frequently detected compounds.
conclusionGlobal data highlight the need for standardised monitoring frameworks, targeted sources mitigation, and advanced water treatment technologies capable of efficiently removing chemically stable pharmaceutical compounds. Strengthening these approaches is essential to reduce ecological risks, minimise human exposure, and safeguard the long-term integrity of aquatic ecosystems.
Identifiers
42481907What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.