Viswanath KS, Pappula N. New rp-hplc method for the simultaneous estimation of dextromethorphan hydrobromide and promethazine in oral dosage forms. J Inn App Pharma Sci [Internet]. 2025Mar.11 [cited 2026Apr.28];10(1):16-0. Available from: https://www.saapjournals.org/index.php/jiaps/article/view/670