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🌿 Supplements

ADHD Supplements resources curated by ADHDinfoNinja.

5-HTP (3)

Examine.com — 5-HTP
Evidence-based reference covering 5-HTP mechanism, dosage, interactions, and research summary.
Healthline — Natural Adderall Alternatives (5-HTP section)
Overview of 5-HTP as a serotonin precursor with ADHD relevance, safety warnings, and interaction notes.
Nootropics Expert — Serotonin, 5-HTP & ADHD
Detailed guide on 5-HTP as serotonin precursor, dosing (50mg up to 3x/day), and role in ADHD impulsivity.

B Vitamins (3)

Examine.com — Vitamin B Complex
Evidence-based reference on B vitamin complex for neurotransmitter synthesis and energy metabolism.
Psychiatry Redefined — B12, Iron, Magnesium, Zinc for ADHD
Functional psychiatry guide on micronutrient repletion as foundation for ADHD brain function.
The Hook Report — B Vitamins & Dopamine Transport in ADHD
Guide covering research suggesting B vitamins may interact with the dopamine transporter similarly to methylphenidate.

Bacopa Monnieri (4)

Examine.com — Bacopa Monnieri
Evidence-based reference covering bacopa mechanism, 4-6 week onset, dendrite growth, and cognition studies.
MDPI Nutrients — Bacopa in ADHD Systematic Review (2025)
Systematic review finding bacopa consistently improved inattention, hyperactivity, and memory in ADHD.
Mind Lab Pro — Best Nootropics for ADHD (Bacopa section)
Guide covering bacopa ADHD research including 74% of children showing up to 20% symptom reduction in open-label study.
Psychiatry Redefined — Bacopa for ADHD
Functional psychiatry perspective on bacopa as Ayurvedic cognition support with ADHD-specific evidence.

Broad-Spectrum Micronutrients (3)

ADDitude Magazine — MADDY Study & Multinutrients
Coverage of the MADDY RCT showing broad-spectrum micronutrients improved aggression and emotional regulation in ADHD children.
Dr Lewis — Micronutrients for ADHD + Emotional Dysregulation
Practitioner guide noting broad-spectrum formulas show particular promise for ADHD with emotional dysregulation and mood instability.
JCPP — Vitamin-Mineral Treatment & Aggression in ADHD RCT (Rucklidge 2018)
Fully blinded RCT showing vitamin-mineral treatment improved aggression and emotional regulation in children with ADHD.

Caffeine (4)

Examine.com — Caffeine
Comprehensive evidence-based reference on caffeine pharmacology, cognitive effects, and ADHD relevance.
MDPI Nutrients — Caffeine in ADHD Systematic Review (2025)
Systematic review finding caffeine alone showed no significant ADHD benefits but synergised with L-theanine for attention.
Mind Lab Pro — Caffeine for ADHD
Guide on caffeine as adenosine blocker increasing dopamine availability, with ADHD-specific dosing considerations.
Use Cadence — Caffeine & L-Theanine Combination Effects
Science-backed guide on optimal 2:1 L-theanine:caffeine ratio with RCT data on ADHD cognitive improvements.

Cannabis & Marijuana (10)

ADHD and Therapeutic Cannabis Use Motives by Hernandez M, Mitchell JT, et al.
Review of therapeutic cannabis use motivations in adults with ADHD. Examines self-medication patterns, perceived benefits for sleep and anxiety, dose-dependent thresholds, and the overlap between ADHD neurocognitive impairments and endocannabinoid function.
ADHD Symptoms and Medical Cannabis Use Among Adults With Chronic Pain by Saunders D, Slawek D, Zhang C, et al.
Longitudinal cohort study examining whether medical cannabis use is associated with change in ADHD symptoms in adults with chronic pain.
ADHD, Cannabis Use, and the Endocannabinoid System: A Scoping Review by Ryan JE, Fruchtman M, Sparr-Jaswa A, et al.
Reviews preclinical and clinical evidence on the relationship between the endocannabinoid system (ECS) and ADHD. Increasing evidence suggests neurobiological correlates between endogenous cannabinoid function and cognitive dysfunction in ADHD.
Cannabinoid and Terpenoid Doses Are Associated with Adult ADHD Status by Hergenrather JY, Aviram J, Vysotski Y, et al.
Study of 53 medical cannabis patients examining specific cannabinoid and terpenoid profiles. Found association between higher CBN and lower ADHD symptom frequency.
Cannabinoids in ADHD: A Randomised-Controlled Trial (EMA-C) by Cooper RE, Williams E, Seegobin S, et al.
Pilot RCT of Sativex (THC:CBD 1:1) in 30 adults with ADHD. No significant difference on primary outcome (QbTest). Nominally significant improvement in hyperactivity/impulsivity (p=0.03) and inhibition (p=0.05). Provides preliminary evidence for the self-medication theory.
Cannabis and ADHD: A CADDRA Position Statement by Canadian ADHD Resource Alliance (CADDRA)
Based on literature published to 2024, CADDRA concludes there is NO evidence cannabis is an effective treatment for ADHD. Highlights risks of altered brain morphology, diminished dopamine transporter density, and compounding neuropsychological impairments.
Cannabis for the Treatment of ADHD: A Report of 3 Cases by Stueber A, Cuttler C, et al.
Three detailed case reports with validated symptom measures and plasma cannabinoid levels. Patients showed objective improvement on SNAP-IV and emotional regulation scales.
Cannabis Use in ADHD: A Scoping Review by Mansouri M, Nass SR, et al.
Scoping review of 39 studies. Only one RCT found no significant effect on primary outcome (QbTest). Most studies indicated cannabis worsened or had no effect on ADHD symptoms. Given current evidence, cannabis is not recommended for people with ADHD.
Genetic Overlap and Causality Between ADHD and Lifetime Cannabis Use by Soler Artigas M, Sanchez-Mora C, et al.
Published in Molecular Psychiatry. Uses genetic data to examine causal relationship. Findings strongly suggest ADHD is a genetic risk factor for cannabis use and developing cannabis use disorder.
Neurodevelopmental Effects of Cannabis in Adolescents with ADHD by Cawkwell PB, Wilens TE, et al.
Systematic review in Harvard Review of Psychiatry examining neurodevelopmental effects of cannabis in adolescents with ADHD. Highlights concerns about altered brain morphology and perfusion abnormalities.

CBD Oil (8)

A Holistic Review of Cannabis: Potential Risks and Benefits in Mental Health by Psychiatry International, 2025
Comprehensive narrative review covering cannabis chemical composition, pharmacokinetics, psychiatric applications, and gut microbiome interactions.
A Systematic Review of Cannabidiol Trials in Neurodevelopmental Disorders by Efron D, Freeman JL, et al.
Systematic review of CBD RCTs across neurodevelopmental disorders (ASD, ADHD, Tourette's). CBD's suitability as pharmacological treatment remains largely undetermined.
CBD Oil for ADHD: Can It Treat Symptoms, and Is It Safe? by Medical News Today
Patient-facing evidence review. Little scientific evidence that CBD helps ADHD. Some minor evidence CBD may help with anxiety which can exacerbate ADHD.
CBD Oil for ADHD? Research on Treating Symptoms with Cannabis by ADDitude Magazine
Comprehensive evidence summary. No research links CBD oil to ADHD symptom relief. CBD is metabolized by the same liver enzyme as many other medications, creating potential for drug interactions.
CBD Oil for ADHD? What the Research Says by CHADD
CHADD's evidence review: no treatment studies exist, no randomized trials show CBD works for ADHD. Products are unregulated. 'Natural' does not mean less harmful.
CBG for ADHD: Does It Help? What Science Says by Natural Ways CBD
Overview of cannabigerol (CBG) and its potential benefits for ADHD. One survey found 70.8% of respondents with ADHD reported improvement from CBG/CBD products. Anecdotal evidence only.
How the Body's Own Cannabinoids May Influence ADHD Symptoms and Treatment by Medical Xpress / Thomas Jefferson University
Accessible summary of the Ryan et al. 2024 scoping review. Legal restrictions around marijuana continue to hobble cannabis researchers.
Medicinal Cannabinoids in Controlling ADHD Symptoms Among Children and Adolescents by Ayyash HF, Ogundele M, Dahabra MT, et al.
Narrative review found only 1 RCT, 1 case-control, 5 observational studies. Concludes lack of evidence that cannabinoids are effective for ADHD management.

Citicoline (3)

Dr Brighten — Citicoline (Cognizin) for ADHD Focus
Clinician guide on citicoline at 250-500mg/day for attention and mental energy improvement.
Examine.com — CDP-Choline (Citicoline)
Evidence-based reference on citicoline as acetylcholine precursor with cognitive performance research.
WebMD — Nootropics Overview (Citicoline section)
Medical overview of citicoline among cognitive enhancers that may hold promise for brain function support.

Copper (2)

Examine.com — Copper
Evidence-based reference on copper's role in neurotransmitter synthesis and iron metabolism.
NIH ODS — Copper Health Professional Fact Sheet
Official NIH fact sheet on copper recommended intake, food sources, deficiency symptoms, and interactions.

Ginkgo Biloba (3)

Examine.com — Ginkgo Biloba
Evidence-based reference on ginkgo cerebral blood flow effects, attention benefits, and safety profile.
NCCIH (NIH) — Ginkgo
NIH fact sheet on ginkgo evidence, drug interactions, and safety considerations.
PMC — Ginkgo in ADHD Systematic Review (2025)
Systematic review finding ginkgo moderately reduced inattention but was less effective than methylphenidate.

Guides & Overviews (8)

ADDitude Magazine — 10 Supplements & Vitamins for ADHD
Consumer guide by Dr. Sandy Newmark covering omega-3, zinc, iron, vitamin D, magnesium, melatonin, and multinutrients.
ADHD Naturally — Natural Supplements for ADHD
Comprehensive guide to ADHD supplements including amino acids, probiotics, testing, and neurotransmitter support.
Dr Brighten — Best Natural ADHD Supplements for Focus
Clinician guide covering citicoline, saffron, bacopa, L-theanine, magnesium, and women-specific ADHD supplement considerations.
Dr Lewis — ADHD Supplements for Adults: What Actually Works
Evidence-based practitioner guide covering omega-3, iron, magnesium, broad-spectrum micronutrients with dosing protocols.
Examine.com — Supplement Reference Database
Independent evidence-based supplement encyclopedia with referenced articles for all major ADHD supplements.
NCCIH (NIH) — ADHD & Complementary Health Approaches
US National Institutes of Health digest on omega-3, melatonin, and complementary approaches for ADHD.
Psychiatry Redefined — Effective Supplements for ADHD
Functional psychiatry guide covering omega-3, micronutrients, saffron, bacopa, and L-theanine for ADHD.
Sutcliffe Clinic — Latest Science on Supplements for ADHD
Clinical overview of omega-3, iron, zinc, magnesium, probiotics, and emerging supplement research.

Iron (5)

ADDitude Magazine — Ferritin Testing & ADHD
Guide recommending ferritin testing with supplementation target if levels below 30, noting average ADHD ferritin of 22 vs 44 in controls.
Dr Lewis — Iron Deficiency & ADHD in Adults
Practitioner guide noting non-anaemic iron deficiency as the most underrecognised contributor to ADHD symptoms in adults.
PMC — Iron Supplementation & ADHD Children
Review of iron supplementation evidence showing benefit in children with ADHD who have deficiency or high-risk profiles.
Springer — Iron & ADHD Systematic Review (2023)
Review of 20 case-control studies on serum iron and ferritin levels in ADHD, with brain iron concentration findings.
Sutcliffe Clinic — Iron & ADHD
Clinical overview of iron as essential for dopamine synthesis with ADHD-specific supplementation guidance.

L-Dopa (3)

Examine.com — Mucuna Pruriens (L-Dopa source)
Evidence-based reference on Mucuna pruriens as a natural L-Dopa source for dopamine support.
Nootropics Expert — Mucuna Pruriens
Comprehensive guide on L-Dopa supplementation via Mucuna pruriens including dosing and safety.
WebMD — Cowhage (Mucuna Pruriens)
Medical reference on Mucuna pruriens uses, side effects, and drug interactions.

L-Theanine (6)

BMC Psychiatry — L-Theanine & Mental Disorders Systematic Review (2024)
Systematic review finding L-theanine significantly reduced psychiatric symptoms in schizophrenia, anxiety, and ADHD.
Medical News Today — L-Theanine for ADHD
Consumer guide on L-theanine evidence, dosage, and potential as complementary ADHD treatment.
Nature Scientific Reports — L-Theanine + Caffeine fMRI RCT in ADHD Boys (2020)
Neuroimaging RCT showing L-theanine + caffeine improved sustained attention and cognition in boys with ADHD.
Nootropics Expert — L-Theanine Deep Dive
Comprehensive guide on L-theanine including alpha/theta brain waves, GABA modulation, and ADHD stacking advice.
PMC — Cognitive-Enhancing Outcomes of Caffeine & L-Theanine (2022)
Systematic review concluding the L-theanine + caffeine combination is a safe and effective cognitive enhancer.
PubMed — L-Theanine Sleep Quality in ADHD Boys RCT (2011)
RCT demonstrating 400mg daily L-theanine safely improved sleep quality in 98 boys with ADHD.

L-Tryptophan (1)

Examine.com — Tryptophan
Evidence-based reference on tryptophan as upstream serotonin precursor, gentler alternative to 5-HTP.

L-Tyrosine (2)

Examine.com — L-Tyrosine
Evidence-based reference on L-tyrosine as dopamine/norepinephrine precursor with research summary.
PsychCentral — Is L-Tyrosine the New Adderall for ADHD?
Balanced assessment of L-tyrosine evidence for ADHD: popular on Reddit but limited clinical support.

Magnesium (9)

Dr Brighten — Magnesium for ADHD (Glycinate vs Threonate)
Detailed comparison of magnesium forms for ADHD: glycinate for calm/sleep, threonate for cognition, 200-400mg/day dosing.
Medical News Today — Magnesium and ADHD
Consumer guide covering magnesium deficiency in ADHD, 2019 meta-analysis findings, and medication interaction advice.
Mommies in Mind — Simplified Magnesium Dosing for ADHD
Practical dosing guide for glycinate and threonate forms in children with ADHD, with age-based protocols.
Philadelphia Integrative Psychiatry — Magnesium for ADHD, Cognition, Mood & Anxiety
Integrative psychiatry resource on magnesium for sleep, anxiety, depression, and ADHD with research summaries.
Psychiatry Redefined — Magnesium in Mental Health
Clinical guide recommending magnesium glycinate for every ADHD patient, with dosing by age and cofactor advice.
Psychiatry Redefined — Magnesium Treatment Plan PDF
Clinical dosing protocol for magnesium glycinate in ADHD: age-based dosing, B6 augmentation, and monitoring guidance.
PubMed — Magnesium Status & ADHD Meta-Analysis (2019)
Meta-analysis confirming people with ADHD have significantly lower blood magnesium levels than those without ADHD.
PubMed — Magnesium Supplementation & Hyperactivity in ADHD Children (1997)
Landmark study showing 6 months of 200mg/day magnesium significantly decreased hyperactivity in 50 children with ADHD.
ScienceInsights — Which Magnesium for ADHD: Glycinate vs L-Threonate
Head-to-head comparison of magnesium forms for ADHD with 12-week threonate study showing 25% symptom reduction.

Melatonin (3)

Examine.com — Melatonin
Evidence-based reference on melatonin for sleep-wake cycle regulation, dosing, and safety profile.
NCCIH (NIH) — Melatonin & ADHD Sleep
NIH digest noting melatonin improves sleep delay and extends sleep duration in people with ADHD.
PMC — Melatonin in ADHD (Bloch & Qawasmi)
Review noting melatonin is effective for ADHD chronic insomnia but has minimal effect on core ADHD symptoms.

Omega-3 (EPA/DHA) (4)

ADDitude Magazine — Omega-3 & ADHD
Consumer guide on fish oil supplementation with EPA:DHA ratio advice and dosing for children and adults.
Dr Lewis — Omega-3 for ADHD Adults
Practitioner guide noting omega-3 has the most robust evidence base of any ADHD supplement with ~20-30% symptom reduction.
NCCIH (NIH) — Omega-3 & ADHD
NIH evidence digest covering Cochrane reviews, meta-analyses, and EPA:DHA:GLA ratio research for ADHD.
PMC — Omega-3 Meta-Analysis for ADHD (Bloch & Qawasmi)
Level-1 evidence from multiple meta-analyses showing modest but consistent improvements in ADHD attention and hyperactivity.

Organisations & Foundations (4)

CHADD — Complementary Interventions for ADHD
Overview of complementary supplement and dietary interventions for ADHD from the leading US ADHD organisation.
Nourishing Hope — Weston A. Price Principles for ADHD & Autism
Application of traditional nutrient-dense dietary principles to neurological conditions including ADHD.
Weston A. Price Foundation — Nutrition & Mental Development
Foundation resource on how traditional nutrition supports mental and neurological development.
World Council for Health
International coalition promoting natural health approaches and informed consent.

Phosphatidylserine (3)

Examine.com — Phosphatidylserine
Evidence-based reference on phosphatidylserine for memory, cortisol regulation, and attention support.
Frontiers in Psychiatry — Phosphatidylserine & ADHD Children (2026)
Recent study on phosphatidylserine's effect on behavioural problems in children with ADHD.
WebMD — Nootropics Overview (Phosphatidylserine section)
Medical overview of phosphatidylserine as a cell membrane component with attention and memory research.

Probiotics (3)

Neuropsychopharmacology Reports — Probiotics & ADHD Systematic Review (2024)
Systematic review of prebiotics, probiotics, and synbiotics for ADHD via gut-brain axis modulation.
Springer — Probiotics in ADHD Management (2023)
Review noting probiotics may offer novel preventive and therapeutic strategies for ADHD through gut-brain axis.
Sutcliffe Clinic — Gut-Brain Axis & ADHD
Clinical overview of emerging gut-brain axis research showing gut bacteria can influence neurotransmitter production.

Psilocybin & Microdosing (9)

Between Enhancement and Risk: A Critical Review of Psychedelic Microdosing by various authors
Critical review covering safety concerns including theoretical risk of cardiac fibrosis and valvulopathy through 5-HT2B receptor activation from chronic microdosing.
Cognitive and Subjective Effects of Psilocybin Microdosing: Two Double-Blind Placebo-Controlled Trials by various authors
Two randomized double-blind placebo-controlled longitudinal trials. Microdosing did not significantly affect behavioral or subjective measures compared to placebo.
Effects of Psychedelic Microdosing on Cognitive Functions: Systematic Review and Meta-Analysis by Pinhas N, Eidlman N, Barnea A, Peled-Avron L.
Meta-analysis of 14 studies (N=1614). Found no overall cognitive benefit of microdosing (d=-0.06). Significant selective REDUCTION in cognitive control (d=-0.34).
Effects of Psychedelic Microdosing vs Conventional ADHD Medication on Emotion Regulation by Haijen E, Kuypers KPC, et al.
Two online prospective studies at Maastricht University comparing microdosing effects on emotion regulation and empathy in adults with severe ADHD symptoms.
Microdosing for ADHD: Potential Risks and Therapeutic Effects by Ingmar Gorman, PhD
Clinical psychologist's evidence overview. Naturalistic studies show some self-reported improvements. Controlled trials provide more mixed results. No FDA-approved psychedelic medications exist for ADHD.
Microdosing with Psychedelics to Self-Medicate for ADHD: A Prospective Naturalistic Study by Kuypers KPC, Ramaekers JG, et al.
Prospective naturalistic study. 78% used psilocybin, 12% novel lysergamides, 9.5% LSD. Most common reasons for stopping conventional ADHD medication were physical and psychological side effects.
Psilocybin as a First-Line Treatment of ADHD in Adult Populations (Literature Review) by Perry J, Young C, Williams J.
Literature review in Archives of Clinical Neuropsychology. Concludes microdosing psilocybin has fewer adverse effects than stimulant medications and focuses on serotonin receptors as alternative avenue.
Safety and Efficacy of Repeated Low-Dose LSD for ADHD Treatment in Adults: A Randomized Clinical Trial by Mueller L, Santos de Jesus J, et al.
Published in JAMA Psychiatry 2025. First placebo-controlled evidence on repeated LSD microdosing (20mcg, twice weekly for 4-6 weeks) for ADHD. Well tolerated but did not significantly reduce ADHD symptoms compared to placebo.
Trait Mindfulness and Personality in a Microdosing ADHD Sample by various authors
Naturalistic prospective survey exploring personality characteristics and trait mindfulness in adults with ADHD who microdose psychedelics.

Pycnogenol (2)

Frontiers in Nutrition — Pycnogenol French Maritime Pine Bark RCTs (2024)
Review of randomised controlled trials on pycnogenol including ADHD studies showing fewer side effects than methylphenidate.
Healthline — Natural Adderall Alternatives (Pycnogenol section)
Overview of pycnogenol as a French maritime pine bark antioxidant with emerging ADHD evidence.

Reddit & Community (5)

Gizmodo — Nootropics & the Human Lab Rats of Reddit
Investigative article on r/Nootropics community-driven supplement experimentation and self-reporting.
Mindful Praxis — Reddit's Top-Rated Nootropic Stacks
Analysis of the most discussed supplement combinations on Reddit including L-Theanine + Caffeine and Mr. Happy Stack.
r/ADHD — ADHD Subreddit
Reddit community for ADHD discussion including supplement experiences, medication questions, and coping strategies.
r/Nootropics — Nootropics Subreddit
Reddit community for cognitive enhancer discussion, supplement stacking, and evidence-based nootropic experimentation.
r/StackAdvice — Stack Advice Subreddit
Reddit community for personalised supplement stack recommendations and dosing feedback.

Rhodiola Rosea (2)

Examine.com — Rhodiola Rosea
Evidence-based reference on rhodiola as an adaptogen for stress, fatigue, and cognitive performance.
Mind Lab Pro — Rhodiola for ADHD
Guide on rhodiola rosea for ADHD-related mental fatigue, dopamine modulation, and stress response.

Saffron (4)

Dr Brighten — Saffron for ADHD Focus
Clinician guide on saffron (affron) at 28-30mg/day supporting mood, stress, and distractibility within 4-6 weeks.
Examine.com — Saffron
Evidence-based reference on saffron's serotonin modulation, antioxidant properties, and clinical studies.
Nutrients — Saffron as Effective as Methylphenidate in ADHD (2022)
Clinical study finding saffron extract comparable to methylphenidate for ADHD symptoms in children and adolescents.
Psychiatry Redefined — Saffron for ADHD
Functional psychiatry perspective on saffron's brain-supporting properties with ADHD-specific study references.

Scientific Reviews & Meta-Analyses (7)

ADHD Evidence Project — Alternative Therapies
Evidence-based review platform covering supplement and alternative interventions for ADHD.
Frontiers in Nutrition — Nutrition & Neurodivergence (2025)
Comprehensive review of omega-3, micronutrient, and dietary approaches for ADHD and neurodivergent conditions.
MDPI Nutrients — ADHD Supplements Systematic Review (2025)
Systematic review of L-theanine, caffeine, Ginkgo biloba, and Bacopa monnieri efficacy in ADHD.
PMC — Nutritional Supplements for ADHD (Bloch & Qawasmi 2014)
Landmark review synthesising evidence on omega-3, zinc, iron, magnesium, melatonin, and herbal supplements for ADHD.
SAGE Journals — Harm Reduction for Stimulants on Reddit (2025)
Academic analysis of Reddit r/ADHD supplement discussions including magnesium, vitamins, and caffeine as harm reduction strategies.
Springer — ADHD & Nutritional Supplements Bibliometric (2025)
Bibliometric analysis of 1,010 publications on ADHD nutritional supplements from 2000-2024.
Springer — Nutrition in ADHD Management Review (2023)
Review of minerals, probiotics, and dietary interventions with dose-response meta-analysis for zinc.

Vitamin C (2)

Examine.com — Vitamin C
Evidence-based reference on vitamin C as antioxidant with iron absorption enhancement and immune support.
NIH ODS — Vitamin C Health Professional Fact Sheet
Official NIH fact sheet on vitamin C recommended intake, food sources, deficiency, and drug interactions.

Vitamin D (3)

ADDitude Magazine — Vitamin D & ADHD
Guide noting children with ADHD have lower vitamin D levels and mothers with low D have higher likelihood of ADHD children.
ADHD Evidence Project — Vitamin D & ADHD
Evidence platform covering 5 RCTs showing large effect size for vitamin D on ADHD symptoms and executive function.
Agave Health — Vitamin D for ADHD
Overview connecting vitamin D supplementation with cognitive function improvement in children with ADHD via BMC Psychiatry.

Vitamin K2 (3)

Dr Brighten — Vitamin K2 & D3 Synergy
Clinician guide on vitamin K2 as essential cofactor for vitamin D3 in bone and cardiovascular health.
Examine.com — Vitamin K
Evidence-based reference on vitamin K2 (MK-7) for calcium metabolism, cardiovascular support, and D3 synergy.
NIH ODS — Vitamin K Health Professional Fact Sheet
Official NIH fact sheet on vitamin K forms (K1, K2), recommended intake, food sources, and interactions.

Zinc (4)

ADDitude Magazine — Zinc & ADHD
Guide covering zinc-stimulant dose reduction studies and impulsivity improvements in children with ADHD.
Agave Health — Zinc for ADHD
Overview of zinc's role in dopamine regulation with Archives of Iranian Medicine study references.
Springer — Zinc & ADHD Dose-Response Meta-Analysis (2023)
Meta-analysis of 6 RCTs (489 children) finding significant effect of zinc on ADHD total scores, greatest after longer duration.
Sutcliffe Clinic — Zinc & ADHD
Clinical overview noting zinc may reduce stimulant dose needed by up to 40% when used as adjunct therapy.

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