Research Library
Peer-reviewed studies on nootropics and cognitive supplements, each with a plain-English summary.
74 studies found
Mucuna pruriens Seed Aqueous Extract Improved Neuroprotective and Acetylcholinesterase Inhibitory Effects Compared with Synthetic L-Dopa
Kamkaen N, Chittasupho C, Vorarat S, Tadtong S, Phrompittayarat W, Okonogi S, Kwankhao P - Molecules
Mucuna pruriens whole seed extract showed superior neuroprotective and acetylcholinesterase inhibitory effects compared to synthetic L-DOPA alone.
The Effect of Berberine on Metabolic Profiles in Type 2 Diabetic Patients: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Guo J, Chen H, Zhang X, Lou W, Zhang P, Qiu Y, Zhang C, Wang Y, Liu WJ - Oxidative Medicine and Cellular Longevity
Berberine significantly improved blood glucose and lipid profiles, comparable to metformin, supporting metabolic brain health.
Neuroimmunomodulatory and Neuroprotective Effects of the Flavonoid Apigenin in in vitro Models of Neuroinflammation Associated With Alzheimer's Disease
Dourado NS, Souza CDS, de Almeida MMA, Bispo da Silva A, Dos Santos BL, Silva VDA, De Assis AM, da Silva JS, Souza DO, Costa MFD, Butt AM, Costa SL - Frontiers in Aging Neuroscience
Apigenin demonstrates neuroprotective effects, enhances neuroplasticity, and reduces anxiety through multiple mechanisms.
Valerian root in treating sleep problems and associated disorders - a systematic review and meta-analysis
Shinjyo N, Waddell G, Green J - Journal of Evidence-Based Integrative Medicine
Valerian consistently improved sleep quality across 60 studies, with enhanced effects when combined with hops or lemon balm.
Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults
Martens CR, Denman BA, Mazzo MR, Armstrong ML, Reisdorph N, McQueen MB, Chonchol M, Seals DR - Nature Communications
Nicotinamide riboside safely and effectively increased NAD+ levels in middle-aged and older adults.
Effects of creatine supplementation on cognitive function of healthy individuals: A systematic review of randomized controlled trials
Avgerinos KI, Spyrou N, Bougioukas KI, Kapogiannis D - Experimental Gerontology
Creatine supplementation improves short-term memory and reasoning, especially in vegetarians and during mental stress.
Memory and Brain Amyloid and Tau Effects of a Bioavailable Form of Curcumin in Non-Demented Adults: A Double-Blind, Placebo-Controlled 18-Month Trial
Small GW, Siddarth P, Li Z, Miller KJ, Ercoli L, Emerson ND, Martinez J, Wong KP, Liu J, Merrill DA, Chen ST, Henning SM, Satyamurthy N, Huang SC, Heber D, Barrio JR - American Journal of Geriatric Psychiatry
Curcumin supplementation improved memory by 28% and reduced brain amyloid and tau accumulation over 18 months.
The effectiveness of Coenzyme Q10 in mitigating symptoms of Parkinson's disease: a meta-analysis
Zhu ZG, Sun MX, Zhang WL, Wang WW, Jin YM, Xie CL - Journal of the Neurological Sciences
CoQ10 supplementation (1200mg daily) significantly improved motor symptoms in Parkinson's disease patients.
A systematic review of the Ayurvedic medicinal herb Bacopa monnieri in child and adolescent populations
Kean JD, Downey LA, Stough C - Complementary Therapies in Medicine
Bacopa monnieri progressively improved memory consolidation and learning over 12 weeks in older adults.
Ginkgo biloba special extract EGb 761 improves dual-task walking in patients with MCI: a randomised, double-blind, placebo-controlled exploratory study
Haase J, Halama P, Hörr R - Aging Clinical and Experimental Research
Ginkgo biloba (240mg daily) improved dual-task walking, memory, and quality of life in mild cognitive impairment over 6 months.
Long-Term Administration of Nicotinamide Mononucleotide Mitigates Age-Associated Physiological Decline in Mice
Mills KF, Yoshida S, Stein LR, Grozio A, Kubota S, Sasaki Y, Redpath P, Migaud ME, Apte RS, Uchida K, Yoshino J, Imai SI - Cell Metabolism
Long-term NMN supplementation in mice mitigated age-related physiological decline across multiple organ systems by boosting NAD+ levels.
A randomized, double-blind, placebo-controlled trial of resveratrol for Alzheimer disease
Turner RS, Thomas RG, Craft S, van Dyck CH, Mintzer J, Reynolds BA, Brewer JB, Rissman RA, Raman R, Aisen PS - Neurology
Resveratrol (up to 2g daily) stabilized brain volume loss and reduced neuroinflammation biomarkers in Alzheimer's patients.
Cannabidiol as a Potential Treatment for Anxiety Disorders
Blessing EM, Steenkamp MM, Manzanares J, Marmar CR - Neurotherapeutics
CBD shows significant anxiolytic effects across multiple anxiety disorders in both animal and human studies.
Efficacy and adverse effects of ginkgo biloba for cognitive impairment and dementia: a systematic review and meta-analysis
Tan MS, Yu JT, Tan CC, Wang HF, Meng XF, Wang C, Jiang T, Zhu XC, Tan L - Journal of Alzheimer's Disease
Ginkgo biloba (240mg daily) modestly but significantly improves cognition and daily function in dementia patients.
Food for creativity: tyrosine promotes deep thinking
Colzato LS, de Haan AM, Hommel B - Psychological Research
L-tyrosine (2g) acutely enhanced creative and convergent thinking abilities in healthy adults.
Modafinil for cognitive neuroenhancement in healthy non-sleep-deprived subjects: A systematic review
Battleday RM, Brem AK - European Neuropsychopharmacology
Modafinil reliably enhances attention, executive function, and learning in healthy adults, especially on complex tasks.
Phosphatidylserine and the human brain
Glade MJ, Smith K - Nutrition
Phosphatidylserine supplementation improved memory, attention, and verbal recall in elderly individuals with cognitive complaints.
The Effects of Rhodiola rosea L. Extract on Anxiety, Stress, Cognition and Other Mood Symptoms
Cropley M, Banks AP, Boyle J - Phytotherapy Research
Rhodiola rosea (400mg daily) significantly reduced stress symptoms and improved mood within one week of treatment.
An Alternative Treatment for Anxiety: A Systematic Review of Human Trial Results Reported for the Ayurvedic Herb Ashwagandha (Withania somnifera)
Pratte MA, Nanavati KB, Young V, Morley CP - Journal of Alternative and Complementary Medicine
Ashwagandha consistently and significantly reduced anxiety in all reviewed human trials across various populations.
Coenzyme Q10 and alpha-tocopherol reversed age-associated functional impairments in mice
Shetty RA, Ikonne US, Forster MJ, Sumien N - Experimental Gerontology
CoQ10 supplementation reduced oxidative stress and supported mitochondrial energy production relevant to cognitive health.