COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH: Menu
Open or close the search fields display
5 Studies found for: Codeine AND Pseudoephedrine

Terms and Synonyms Searched:

Terms Search Results* Entire Database**
Codeine 5 studies 170 studies
Codein -- 2 studies
Methyl morphine -- 3 studies
Pseudoephedrine 5 studies 578 studies
Decongestant 2 studies 385 studies
Ephedrine 1 studies 265 studies
Nasal and Sinus -- 21 studies
sudafed -- 13 studies
Sudogest -- 1 studies
Unifed -- 2 studies

-- No studies found
* Number of studies in the search results containing the term or synonym
** Number of studies in the entire database containing the term or synonym