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.


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
Text availability
Article attribute
Article type
Publication date

Search Results

97 results
Filters applied: . Clear all Results are displayed in a computed author sort order. Results by year timeline is unavailable
Page 1
Guarana: revisiting a highly caffeinated plant from the Amazon.
Schimpl FC, da Silva JF, Gonçalves JF, Mazzafera P. Schimpl FC, et al. Among authors: mazzafera p. J Ethnopharmacol. 2013 Oct 28;150(1):14-31. doi: 10.1016/j.jep.2013.08.023. Epub 2013 Aug 24. J Ethnopharmacol. 2013. PMID: 23981847 Review.
97 results