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TARIGAN RE, ANDRY M, ZULMI MARPAUNG AT, NASUTION MA, LUBIS MF. QUANTITATIVE ANALYSIS OF DEXTROMETHORPHAN-HBr, GUAIFENESIN, AND DIPHENHYDRAMINE-HCl IN TABLET DOSAGE FORM BY RATIO DIFFERENCE SPECTROPHOTOMETRY METHOD. Int J App Pharm [Internet]. 2024 Jan. 7 [cited 2024 Nov. 23];16(1):306-10. Available from: https://journals.innovareacademics.in/index.php/ijap/article/view/49218