Improvements in concentration, working memory and sustained attention following consumption of a natural citicoline-caffeine beverage.
Int J Food Sci Nutr. 2014 Dec;65(8):1003-7. doi: 10.3109/09637486.2014.940286. Epub 2014 Jul 21.
Int J Food Sci Nutr. 2014.
PMID: 25046515
Free PMC article.
Clinical Trial.