Efficacy of a single evening dose of syrup containing paracetamol, dextromethorphan hydrobromide, doxylamine succinate and ephedrine sulfate in subjects with multiple common cold symptoms.
Int J Clin Pharmacol Ther. 2007 Apr;45(4):230-6. doi: 10.5414/cpp45230.
Int J Clin Pharmacol Ther. 2007.
PMID: 17474541
Clinical Trial.