Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

My NCBI Filters
Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1984 1
1997 1
2005 2
2011 1
2023 0
Text availability
Article attribute
Article type
Publication date

Search Results

5 results
Results by year
Filters applied: . Clear all
Page 1
Efficacy and Safety of CVT-E002, a Proprietary Extract of Panax quinquefolius in the Prevention of Respiratory Infections in Influenza-Vaccinated Community-Dwelling Adults: A Multicenter, Randomized, Double-Blind, and Placebo-Controlled Trial.
McElhaney JE, Simor AE, McNeil S, Predy GN. McElhaney JE, et al. Among authors: predy gn. Influenza Res Treat. 2011;2011:759051. doi: 10.1155/2011/759051. Epub 2011 Jul 20. Influenza Res Treat. 2011. PMID: 23074661 Free PMC article.