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

Filters

My NCBI Filters

Results by year

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

Year Number of Results
1994 1
1996 1
2001 1
2004 1
2006 1
2007 2
2008 2
2010 1
2011 1
2012 1
2013 3
2014 2
2015 1
2016 3
2017 4
2018 1
2019 2
2020 1
2021 1
2022 3
2023 7
2024 1

Text availability

Article attribute

Article type

Publication date

Search Results

35 results

Results by year

Filters applied: . Clear all
Page 1
Effect of Guarana (Paullinia cupana) on Cognitive Performance: A Systematic Review and Meta-Analysis.
Hack B, Penna EM, Talik T, Chandrashekhar R, Millard-Stafford M. Hack B, et al. Nutrients. 2023 Jan 14;15(2):434. doi: 10.3390/nu15020434. Nutrients. 2023. PMID: 36678305 Free PMC article. Review.
The plant extract guarana is known for its caffeine content and other bioactive ingredients, which purportedly may improve cognitive performance. ...Meta-regression of the study ESs of overall cognitive task performance was not related to the guarana d …
The plant extract guarana is known for its caffeine content and other bioactive ingredients, which purportedly may improve cogniti …
The Use and Impact of Cognitive Enhancers among University Students: A Systematic Review.
Sharif S, Guirguis A, Fergus S, Schifano F. Sharif S, et al. Brain Sci. 2021 Mar 10;11(3):355. doi: 10.3390/brainsci11030355. Brain Sci. 2021. PMID: 33802176 Free PMC article. Review.
INTRODUCTION: Cognitive enhancers (CEs), also known as "smart drugs", "study aids" or "nootropics" are a cause of concern. ...It is therefore suggested that CEs are increasingly being used among healthy individuals, mainly students without any diagnosed cognitive di …
INTRODUCTION: Cognitive enhancers (CEs), also known as "smart drugs", "study aids" or "nootropics" are a cause of concern. ...It is t …
Cognitive effects of guarana supplementation with maximal intensity cycling.
Gurney T, Bradley N, Izquierdo D, Ronca F. Gurney T, et al. Br J Nutr. 2023 Jul 28;130(2):253-260. doi: 10.1017/S0007114522002859. Epub 2022 Sep 23. Br J Nutr. 2023. PMID: 36146946 Free PMC article. Clinical Trial.
The aim of this study was to investigate the effects of guarana supplementation on cognitive performance before and after a bout of maximal intensity cycling and to compare this to an equivalent caffeine dose. ...There were no changes to VO(2max), immediate word rec …
The aim of this study was to investigate the effects of guarana supplementation on cognitive performance before and after a bo …
Effects of Dietary Supplementation of a Microalgae Extract Containing Fucoxanthin Combined with Guarana on Cognitive Function and Gaming Performance.
Leonard M, Maury J, Dickerson B, Gonzalez DE, Kendra J, Jenkins V, Nottingham K, Yoo C, Xing D, Ko J, Pradelles R, Faries M, Kephart W, Sowinski R, Rasmussen CJ, Kreider RB. Leonard M, et al. Nutrients. 2023 Apr 15;15(8):1918. doi: 10.3390/nu15081918. Nutrients. 2023. PMID: 37111136 Free PMC article. Clinical Trial.
This study evaluated whether acute and 30-day supplementation of an extract of PT from microalgae combined with guarana (a natural source of caffeine) affects cognitive function in gamers. ...RESULTS: There was some evidence that acute and 30-day ingestion of the PT …
This study evaluated whether acute and 30-day supplementation of an extract of PT from microalgae combined with guarana (a natural so …
Nootropic Herbs, Shrubs, and Trees as Potential Cognitive Enhancers.
Malík M, Tlustoš P. Malík M, et al. Plants (Basel). 2023 Mar 18;12(6):1364. doi: 10.3390/plants12061364. Plants (Basel). 2023. PMID: 36987052 Free PMC article. Review.
Maxim., Ginkgo biloba L., Lepidium meyenii Walp., Panax ginseng C.A. Meyer, Paullinia cupana Kunth, Rhodiola rosea L., Schisandra chinensis (Turcz.) ...The available data suggest that including extracts from these plants in medicinal products to treat cognitive diso …
Maxim., Ginkgo biloba L., Lepidium meyenii Walp., Panax ginseng C.A. Meyer, Paullinia cupana Kunth, Rhodiola rosea L., Schisandra chi …
International society of sports nutrition position stand: energy drinks and energy shots.
Jagim AR, Harty PS, Tinsley GM, Kerksick CM, Gonzalez AM, Kreider RB, Arent SM, Jager R, Smith-Ryan AE, Stout JR, Campbell BI, VanDusseldorp T, Antonio J. Jagim AR, et al. J Int Soc Sports Nutr. 2023 Dec;20(1):2171314. doi: 10.1080/15502783.2023.2171314. J Int Soc Sports Nutr. 2023. PMID: 36862943 Free PMC article. Review.
Position Statement: The International Society of Sports Nutrition (ISSN) bases the following position stand on a critical analysis of the literature regarding the effects of energy drink (ED) or energy shot (ES) consumption on acute exercise performance, metabolism, and cognit …
Position Statement: The International Society of Sports Nutrition (ISSN) bases the following position stand on a critical analysis of the li …
Mental Performance and Sport: Caffeine and Co-consumed Bioactive Ingredients.
Kennedy DO, Wightman EL. Kennedy DO, et al. Sports Med. 2022 Dec;52(Suppl 1):69-90. doi: 10.1007/s40279-022-01796-8. Epub 2022 Nov 30. Sports Med. 2022. PMID: 36447122 Free PMC article. Review.
However, although caffeine modestly but consistently improves alertness and fatigue, its effects on mental performance are largely restricted to improved attention or concentration. It has no consistent effect within other cognitive domains that are important to sporting p …
However, although caffeine modestly but consistently improves alertness and fatigue, its effects on mental performance are largely restricte …
Cognitive Performance Enhancement Induced by Caffeine, Carbohydrate and Guarana Mouth Rinsing during Submaximal Exercise.
Pomportes L, Brisswalter J, Casini L, Hays A, Davranche K. Pomportes L, et al. Nutrients. 2017 Jun 9;9(6):589. doi: 10.3390/nu9060589. Nutrients. 2017. PMID: 28598402 Free PMC article. Clinical Trial.
The aim of this study was to investigate the influence of serial mouth rinsing (MR) with nutritional supplements on cognitive performance (i.e., cognitive control and time perception) during a 40-min submaximal exercise. ...Moreover, results have shown that performi …
The aim of this study was to investigate the influence of serial mouth rinsing (MR) with nutritional supplements on cognitive perform …
Improved cognitive performance in human volunteers following administration of guarana (Paullinia cupana) extract: comparison and interaction with Panax ginseng.
Kennedy DO, Haskell CF, Wesnes KA, Scholey AB. Kennedy DO, et al. Pharmacol Biochem Behav. 2004 Nov;79(3):401-11. doi: 10.1016/j.pbb.2004.07.014. Pharmacol Biochem Behav. 2004. PMID: 15582012 Clinical Trial.
Extracts from the plant guarana (Paullinia cupana) feature as putatively stimulating ingredients in a number of foods, drinks and dietary/herbal supplements. ...Extracts of Panax ginseng, which are often sold in combination with guarana, contain similar poten …
Extracts from the plant guarana (Paullinia cupana) feature as putatively stimulating ingredients in a number of foods, drinks …
35 results