Alertness

    Last Updated: October 13, 2024

    Alertness is an aspect of wakefulness with hints of attention, and is the ability to interpret and maintain attention on different targets. Supplements that increase alertness tend to be anti-sleep or stimulatory agents.

    746 participants in 19 trials

    Examine Database: Alertness

    Research FeedRead all studies

    Examine Database References

    1. L-Tyrosine - Nicole A Coull, Samuel L Watkins, Jeffrey W F Aldous, Lee K Warren, Bryna C R Chrismas, Benjamin Dascombe, Alexis R Mauger, Grant Abt, Lee TaylorEffect of tyrosine ingestion on cognitive and physical performance utilising an intermittent soccer performance test (iSPT) in a warm environmentEur J Appl Physiol.(2015 Feb)
    2. Theanine - F L Dodd, D O Kennedy, L M Riby, C F Haskell-RamsayA double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and moodPsychopharmacology (Berl).(2015 Jul)
    3. Gotu Kola - Wattanathorn J, Mator L, Muchimapura S, Tongun T, Pasuriwong O, Piyawatkul N, Yimtae K, Sripanidkulchai B, Singkhoraard JPositive modulation of cognition and mood in the healthy elderly volunteer following the administration of Centella asiaticaJ Ethnopharmacol.(2008 Mar 5)
    4. Creatine - Cook CJ, Crewther BT, Kilduff LP, Drawer S, Gaviglio CMSkill execution and sleep deprivation: effects of acute caffeine or creatine supplementation - a randomized placebo-controlled trialJ Int Soc Sports Nutr.(2011 Feb 16)
    5. Ashwagandha - Pingali U, Pilli R, Fatima NEffect of standardized aqueous extract of Withania somnifera on tests of cognitive and psychomotor performance in healthy human participantsPharmacognosy Res.(2014 Jan)
    6. Rhodiola Rosea - Jówko E, Sadowski J, Długołęcka B, Gierczuk D, Opaszowski B, Cieśliński IEffects of Rhodiola rosea supplementation on mental performance, physical capacity, and oxidative stress biomarkers in healthy menJ Sport Health Sci.(2018 Oct)
    7. Bacopa Monnieri - Sarah Benson, Luke A Downey, Con Stough, Mark Wetherell, Andrea Zangara, Andrew ScholeyAn acute, double-blind, placebo-controlled cross-over study of 320 mg and 640 mg doses of Bacopa monnieri (CDRI 08) on multitasking stress reactivity and moodPhytother Res.(2014 Apr)
    8. L-Tyrosine - Catherine O'Brien, Caroline Mahoney, William J Tharion, Ingrid V Sils, John W CastellaniDietary tyrosine benefits cognitive and psychomotor performance during body coolingPhysiol Behav.(2007 Feb 28)
    9. Creatine - Pan JW, Takahashi KCerebral energetic effects of creatine supplementation in humansAm J Physiol Regul Integr Comp Physiol.(2007 Apr)
    10. Grape Juice - Haskell-Ramsay CF, Stuart RC, Okello EJ, Watson AWCognitive and mood improvements following acute supplementation with purple grape juice in healthy young adultsEur J Nutr.(2017 Dec)
    11. Bitter orange - Stohs SJ, Preuss HG, Keith SC, Keith PL, Miller H, Kaats GREffects of p-synephrine alone and in combination with selected bioflavonoids on resting metabolism, blood pressure, heart rate and self-reported mood changesInt J Med Sci.(2011 Apr 28)
    12. Melatonin - Rimmele U, Spillmann M, Bärtschi C, Wolf OT, Weber CS, Ehlert U, Wirtz PHMelatonin improves memory acquisition under stress independent of stress hormone releasePsychopharmacology (Berl).(2009 Mar)
    13. Iron - Favrat B, Balck K, Breymann C, Hedenus M, Keller T, Mezzacasa A, Gasche CEvaluation of a single dose of ferric carboxymaltose in fatigued, iron-deficient women--PREFER a randomized, placebo-controlled studyPLoS One.(2014 Apr 21)
    14. Lemon Balm - Kennedy DO, Little W, Scholey ABAttenuation of laboratory-induced stress in humans after acute administration of Melissa officinalis (Lemon Balm)Psychosom Med.(2004 Jul-Aug)
    15. Theanine - Grace E Giles, Caroline R Mahoney, Tad T Brunyé, Holly A Taylor, Robin B KanarekCaffeine and theanine exert opposite effects on attention under emotional arousalCan J Physiol Pharmacol.(2017 Jan)
    16. Lemon Balm - Kennedy DO, Scholey AB, Tildesley NT, Perry EK, Wesnes KAModulation of mood and cognitive performance following acute administration of Melissa officinalis (lemon balm)Pharmacol Biochem Behav.(2002 Jul)
    17. Theanine - Crystal F Haskell, David O Kennedy, Anthea L Milne, Keith A Wesnes, Andrew B ScholeyThe effects of L-theanine, caffeine and their combination on cognition and moodBiol Psychol.(2008 Feb)
    18. Tart Cherry Juice - Keane KM, Haskell-Ramsay CF, Veasey RC, Howatson GMontmorency Tart cherries (Prunus cerasus L.) modulate vascular function acutely, in the absence of improvement in cognitive performance.Br J Nutr.(2016-Dec)
    19. Tart Cherry Juice - Kimble R, Keane KM, Lodge JK, Cheung W, Haskell-Ramsay CF, Howatson GPolyphenol-rich tart cherries ( Montmorency) improve sustained attention, feelings of alertness and mental fatigue and influence the plasma metabolome in middle-aged adults: a randomised, placebo-controlled trial.Br J Nutr.(2022-Feb-03)