{"title":"Mixtures and dilutions of commercial solutions for oral drops: What happens in these cocktails?","authors":"Caroline Castera-Ducros, Romain Paoli-Lombardo, Ikram Zaddam, Cyril Fersing, Charleric Bornet, Patrice Vanelle, Pascal Rathelot, Christophe Curti","doi":"10.1016/j.therap.2025.11.002","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div>Physicochemical incompatibilities of parenteral drugs are frequently studied and reported, but are rarely documented for liquid oral drugs. However, in clinical practices, nurses may perform mixtures of several liquid oral formulations. Although such practices are not recommended, there is a lack of scientific evidence to support this statement.</div></div><div>Physicochemical incompatibilities of parenteral drugs are frequently studied and reported, but are rarely documented for liquid oral drugs. However, in clinical practices, nurses may perform mixtures of several liquid oral formulations. Although such practices are not recommended, there is a lack of scientific evidence to support this statement.</div><div><h3>Objective</h3><div>We aimed to study potential incompatibilities of the most dispensed commercial liquid oral formulations in a psychiatric ward.</div></div><div>We aimed to study potential incompatibilities of the most dispensed commercial liquid oral formulations in a psychiatric ward.</div><div><h3>Methods</h3><div>First, a bibliographic analysis was performed. Then, 1:1 mixtures of one commercial liquid specialty and tap water and 1:1:1 mixtures of two commercial formulations and water were realized and controlled both visually and analytically. When a precipitate was formed, the mixture was considered incompatible.</div></div><div>First, a bibliographic analysis was performed. Then, 1:1 mixtures of one commercial liquid specialty and tap water and 1:1:1 mixtures of two commercial formulations and water were realized and controlled both visually and analytically. When a precipitate was formed, the mixture was considered incompatible.</div><div><h3>Results</h3><div>A table of oral liquid drug incompatibilities was compiled, and the need for pharmaceutical expertise on this subject was discussed.</div></div><div>A table of oral liquid drug incompatibilities was compiled, and the need for pharmaceutical expertise on this subject was discussed.</div><div><h3>Conclusion</h3><div>This work is the first report of oral liquid drugs’ physicochemical incompatibilities and can lead to an improvement in clinical practices.</div></div><div>This work is the first report of oral liquid drugs’ physicochemical incompatibilities and can lead to an improvement in clinical practices.</div>","PeriodicalId":23147,"journal":{"name":"Therapie","volume":"81 4","pages":"Pages 311-317"},"PeriodicalIF":2.1000,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Therapie","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S004059572500143X","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/11/17 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"PHARMACOLOGY & PHARMACY","Score":null,"Total":0}
引用次数: 0
Abstract
Background
Physicochemical incompatibilities of parenteral drugs are frequently studied and reported, but are rarely documented for liquid oral drugs. However, in clinical practices, nurses may perform mixtures of several liquid oral formulations. Although such practices are not recommended, there is a lack of scientific evidence to support this statement.
Physicochemical incompatibilities of parenteral drugs are frequently studied and reported, but are rarely documented for liquid oral drugs. However, in clinical practices, nurses may perform mixtures of several liquid oral formulations. Although such practices are not recommended, there is a lack of scientific evidence to support this statement.
Objective
We aimed to study potential incompatibilities of the most dispensed commercial liquid oral formulations in a psychiatric ward.
We aimed to study potential incompatibilities of the most dispensed commercial liquid oral formulations in a psychiatric ward.
Methods
First, a bibliographic analysis was performed. Then, 1:1 mixtures of one commercial liquid specialty and tap water and 1:1:1 mixtures of two commercial formulations and water were realized and controlled both visually and analytically. When a precipitate was formed, the mixture was considered incompatible.
First, a bibliographic analysis was performed. Then, 1:1 mixtures of one commercial liquid specialty and tap water and 1:1:1 mixtures of two commercial formulations and water were realized and controlled both visually and analytically. When a precipitate was formed, the mixture was considered incompatible.
Results
A table of oral liquid drug incompatibilities was compiled, and the need for pharmaceutical expertise on this subject was discussed.
A table of oral liquid drug incompatibilities was compiled, and the need for pharmaceutical expertise on this subject was discussed.
Conclusion
This work is the first report of oral liquid drugs’ physicochemical incompatibilities and can lead to an improvement in clinical practices.
This work is the first report of oral liquid drugs’ physicochemical incompatibilities and can lead to an improvement in clinical practices.
期刊介绍:
Thérapie is a peer-reviewed journal devoted to Clinical Pharmacology, Therapeutics, Pharmacokinetics, Pharmacovigilance, Addictovigilance, Social Pharmacology, Pharmacoepidemiology, Pharmacoeconomics and Evidence-Based-Medicine. Thérapie publishes in French or in English original articles, general reviews, letters to the editor reporting original findings, correspondence relating to articles or letters published in the Journal, short articles, editorials on up-to-date topics, Pharmacovigilance or Addictovigilance reports that follow the French "guidelines" concerning good practice in pharmacovigilance publications. The journal also publishes thematic issues on topical subject.
The journal is indexed in the main international data bases and notably in: Biosis Previews/Biological Abstracts, Embase/Excerpta Medica, Medline/Index Medicus, Science Citation Index.