Emma L. Wightman, Philippa A. Jackson, Bethany Spittlehouse, Thomas Heffernan, Damien Guillemet & David O. Kennedy (2021). The Acute and Chronic Cognitive Effects of a Sage Extract: A Randomized, Placebo Controlled Study in Healthy Humans. Nutrients, 13(1), 218.

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Emma L. Wightman, Philippa A. Jackson, Joanne Forster, Julie Khan, Julia C. Wiebe, Nigel Gericke & David O. Kennedy (2020). Acute Effects of a Polyphenol-Rich Leaf Extract of Mangifera indica L. (Zynamite) on Cognitive Function in Healthy Adults: A Double-Blind, Placebo-Controlled Crossover Study. Nutrients, 12(8), 2194. 

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Philippa A. Jackson, Emma L. Wightman, Rachel Veasey, Joanne Forster, Julie Khan, Caroline Saunders, Siobhan Mitchell, Crystal F. Haskell-Ramsay & David O. Kennedy (2020). A Randomized, Crossover Study of the Acute Cognitive and Cerebral Blood Flow Effects of Phenolic, Nitrate and Botanical Beverages in Young, Healthy Humans. Nutrients, 12(8), 2254.