KUMAR, A.; BATRA, J. Evaluation of the safety and efficacy of codeine phosphate and chlorpheniramine maleate in a fixed dose composition for the management of dry cough in adults: an open label phase IV clinical trial. International Journal of Basic & Clinical Pharmacology, [S. l.], v. 12, n. 1, p. 22–28, 2022. DOI: 10.18203/2319-2003.ijbcp20222982. Disponível em: https://www.ijbcp.com/index.php/ijbcp/article/view/5143. Acesso em: 16 apr. 2026.