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A study conducted at Zagazig University in Egypt has developed a precise and accurate method for determining the levels of carbocisteine, guaifenesin, and oxomemazine in their combined dosage forms. The method uses an eco-friendly high-performance liquid chromatography (HPLC) technique with a green mobile phase. The research concludes that this method can be used in quality control laboratories to determine the levels of these drugs in pharmaceutical dosage forms, and it is superior to previously reported methods in terms of environmental friendliness. The full study can be accessed for free through the provided link. [Extracted from the article]