by Raquel Gonçalves Lubbers
Medication, coaching and therapy will always play key roles in ADHD management, but nutritional neuroscience shows promising benefits of certain vitamins and supplements for enhancing brain function, emotional regulation, and overall health. Eating a high quality diet is foundational for healthy neurotransmitter production. Supplements can fill gaps and optimize brain health when diet alone isn’t enough.
While I have eaten plant-based whole foods since age 11, I’ve learned that even the best diets aren’t always enough. I still have ADHD, no matter how excellent my nutrition. Eating adequate nutrients can also be difficult during times where executive function is especially low. Perimenopause, picky eating, ARFID and eating disorders can make planning, preparing and eating high quality meals even more challenging.
Disclaimer: This article reflects my research and lived experience as an ADHD Coach, perimenopausal woman with ADHD and mother to 4 ADHD children, not as a nutritionist or medical provider.
Supplements can support brain health but don’t expect ADHD to vanish. Always consult your doctor before starting any supplements to make sure they do not have adverse reactions with other medications you may be taking.
Supplements that are Always Beneficial
Omega-3 Fatty Acids
- Neuroscience: Omega-3 fatty acids, particularly EPA, play a critical role in maintaining neuronal membrane fluidity and regulating dopamine pathways. EPA-rich formulas are especially effective in reducing hyperactivity and improving attention.
- Sources: Fish oil, algal oil (vegan option), walnuts, flaxseeds.
- Dosage: 1,000–2,000 mg of combined EPA and DHA daily.
- For Perimenopause: Omega-3s may also alleviate mood swings and inflammation linked to hormonal changes.
Magnesium
- Neuroscience: Magnesium regulates GABA (a calming neurotransmitter) and supports dopamine activity, reducing hyperactivity, impulsivity, and emotional dysregulation.
- Best Forms:
- Magnesium glycinate: Ideal for reducing anxiety and promoting relaxation.
- Magnesium threonate: Penetrates the blood-brain barrier, potentially enhancing memory and cognition.
- Dosage: 310–420 mg daily.
- For Children: Look for powdered forms for easy mixing into drinks.
Vitamin D
- Neuroscience: Vitamin D enhances dopamine production and reduces inflammation in the brain. Low levels are associated with exacerbated ADHD symptoms.
- Sources: Sunlight, fortified plant-based milks, mushrooms exposed to UV light, fish.
- Dosage: 1,000–4,000 IU daily, based on blood levels.
- D3 with K2: Enhances calcium absorption and prevents vascular calcification.
Methylated B Vitamins
- Neuroscience: Methylated B6 and B12 support the methylation process, crucial for dopamine production and neurotransmitter regulation.
- Dosage: 20–50 mg of B6 and 500–1,000 mcg of B12 daily.
- For ADHD: Reduces brain fog and supports energy production.
Beneficial If There Are Known Deficiencies
Zinc
- Neuroscience: Zinc supports dopamine synthesis and melatonin production, essential for focus, attention, and sleep. ADHD symptoms often correlate with low zinc levels.
- Sources: Pumpkin seeds, legumes, whole grains.
- Dosage: 8–11 mg daily. Higher doses may be necessary for deficiency but should be guided by a healthcare provider.
- For Perimenopause: Zinc supports hormonal balance and immune health.
Iron
- Neuroscience: Iron is crucial for dopamine production. Low ferritin levels are associated with increased hyperactivity and inattention in children with ADHD.
- Sources: Spinach, lentils, fortified cereals.
- Dosage: 10–18 mg daily. Supplement only if deficiency is confirmed.
- For Perimenopause: Consider iron supplementation cautiously due to the risk of overload after menstruation ceases.
Emerging Supplements Being Studied
N-Acetylcysteine (NAC)
- Neuroscience: NAC replenishes glutathione, reducing oxidative stress and regulating glutamate, the brain’s primary excitatory neurotransmitter. It may improve emotional regulation and focus.
- Dosage: 600–1,800 mg daily.
- For Perimenopause: Supports mood stabilization and brain health.
L-Theanine
- Neuroscience: L-theanine promotes alpha brain wave activity, creating a calm but alert state. It modulates GABA, dopamine, and serotonin levels.
- Dosage: 100–200 mg daily.
- Combination: Often paired with caffeine for balanced focus without jitters.
- For Children: Consider chewable or powdered forms.
5-HTP
- Neuroscience: As a precursor to serotonin, 5-HTP supports mood regulation and sleep.
- Dosage: 50–300 mg daily.
- Caution: Avoid combining with antidepressants to prevent serotonin syndrome.
- For Perimenopause: Helpful for mood swings and sleep disturbances.
L-Tyrosine
- Neuroscience: A precursor to dopamine and norepinephrine, L-tyrosine enhances executive function, memory, and focus.
- Dosage: 500–2,000 mg daily.
- For Stressful Periods: Beneficial during demanding tasks or heightened stress.
Saffron
- Neuroscience: Contains crocin and safranal, which improve mood and reduce hyperactivity and impulsivity. Some studies show it matches ADHD medications in effectiveness.
- Dosage: 30 mg daily.
- For Children and Adults: Appealing for its natural mood-enhancing properties.
Rhodiola Rosea
- Neuroscience: An adaptogen that reduces cortisol and enhances cognitive performance under stress.
- Dosage: 200–400 mg daily.
- For Perimenopause: Supports energy and emotional resilience.
Ashwagandha
- Neuroscience: Lowers cortisol, promoting calm and reducing hyperactivity.
- Dosage: 300–600 mg daily.
- For Perimenopause: Alleviates stress and improves sleep quality.
Bacopa Monnieri
- Neuroscience: An adaptogen that enhances synaptic communication and supports memory retention.
- Dosage: 300–500 mg of standardized extract daily.
- Ancient Use: Used in Ayurvedic medicine for cognitive enhancement.
Acetyl-L-Carnitine (ALCAR)
- Neuroscience: Supports acetylcholine production, crucial for memory and focus.
- Dosage: 500–2,000 mg daily.
- Benefits: May reduce hyperactivity and improve attention.
Gut-Brain Axis: Nutrition and ADHD
- Neuroscience: The gut-brain axis directly affects neurotransmitter production and inflammatory responses. Balancing gut flora can reduce ADHD symptoms by stabilizing mood and improving focus.
- Key Players
- Probiotics: Restore gut flora balance and reduce systemic inflammation.
- Prebiotics: Feed beneficial gut bacteria, promoting their proliferation.
- Fiber: Regulates blood sugar and supports overall gut health.
- Sources
- Fermented foods (e.g., kimchi, yogurt)
- Fiber-rich foods (e.g., green banana flour, pectin)
- High-quality multi-strain probiotic supplements
- Benefits: May reduce inflammation, improve emotional regulation, and support neurotransmitter production.
- Dosage: Multi-strain probiotics daily; prebiotics can be added to smoothies or meals.
Tracking Your Progress
- Keep a log of which supplements you’re trying, their dosages, and any observed effects on mood, focus, or sleep.
- Experiment with one or two supplements at a time to isolate their benefits.
If you have experimented with these supplements, I’d love to hear in the comments how your experiment is going? Have you found any improvement?
Sources for further reading
- Omega-3s and ADHD: https://www.ncbi.nlm.nih.gov/pubmed/21958933
- Magnesium and ADHD: https://pubmed.ncbi.nlm.nih.gov/12420395
- Zinc and Dopamine: https://www.ncbi.nlm.nih.gov/pubmed/18404347
- Iron and ADHD Symptoms: https://pubmed.ncbi.nlm.nih.gov/19005168
- Vitamin D’s Role: https://www.ncbi.nlm.nih.gov/pubmed/24844146
- NAC and Neuroprotection: https://pubmed.ncbi.nlm.nih.gov/30167819
- L-Theanine: https://pubmed.ncbi.nlm.nih.gov/17182482
- 5-HTP: https://pubmed.ncbi.nlm.nih.gov/19593096
- L-Tyrosine: https://pubmed.ncbi.nlm.nih.gov/7599971
- Saffron and ADHD: https://pubmed.ncbi.nlm.nih.gov/30258063
- Probiotics and ADHD: https://pubmed.ncbi.nlm.nih.gov/26663443
- Rhodiola Rosea: https://pubmed.ncbi.nlm.nih.gov/20684020
- Ashwagandha: https://pubmed.ncbi.nlm.nih.gov/23439798
- GABA: https://pubmed.ncbi.nlm.nih.gov/28968254
- Acetyl-L-Carnitine: https://pubmed.ncbi.nlm.nih.gov/15584767
- EGCG: https://pubmed.ncbi.nlm.nih.gov/18683188
- Bacopa Monnieri: https://pubmed.ncbi.nlm.nih.gov/20334537
- Methylated B Vitamins: https://pubmed.ncbi.nlm.nih.gov/28253622
- Gut-Brain Axis and ADHD: https://pubmed.ncbi.nlm.nih.gov/26663443