Supplements and Natural Remedies: What Works and What Does Not

Discover tips, treatment options, and support strategies from the Finding Focus Care Team

Last Update: June 16th, 2025 | Estimated Read Time: 8 min

Introduction: Exploring Natural Interventions for ADHD

For individuals diagnosed with Attention-Deficit/Hyperactivity Disorder (ADHD), particularly adolescents and adults between the ages of 16 and 55, interest in alternative and complementary interventions is increasingly common. While psychostimulant medications such as methylphenidate and amphetamine-based treatments remain the most evidence-based pharmacological options, they are not universally effective or well-tolerated. Some individuals experience adverse effects, limited symptom control, or simply prefer to pursue more holistic approaches to health.

In this context, the use of nutritional supplements and natural remedies has gained popularity. However, while these treatments are often perceived as safe and benign, their efficacy and safety profiles vary widely. This article critically examines natural supplements commonly used in ADHD management, identifies those with meaningful empirical support, and discusses important considerations for their safe and appropriate use.

The Appeal and Rationale Behind Supplement Use

The interest in natural interventions stems from several factors. First, ADHD is known to involve disruptions in neurotransmitter systems, particularly dopamine and norepinephrine, and certain nutrients play essential roles in the synthesis and regulation of these neurochemicals. Second, concerns about medication side effects, stigma, and long-term use often motivate individuals and families to seek adjunctive or alternative therapies. Lastly, supplements offer an accessible, self-directed option for those looking to participate more actively in their own treatment.

Despite these motivations, there is a need for caution. The natural health product industry is largely unregulated in many jurisdictions, and not all products marketed for ADHD have supporting evidence. Understanding which supplements are supported by high-quality research is essential for informed decision-making.

Omega-3 Fatty Acids: Modest but Consistent Evidence

Omega-3 polyunsaturated fatty acids (PUFAs), particularly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are crucial for brain development and synaptic plasticity. These fatty acids are primarily found in oily fish and are commonly consumed as fish oil supplements.

A meta-analysis conducted by Chang et al. (2018) concluded that omega-3 supplementation leads to statistically significant, albeit modest, improvements in ADHD symptoms, particularly inattention and emotional regulation. Notably, higher EPA content appeared more effective than DHA alone. Individuals with lower baseline omega-3 levels tended to benefit more, suggesting that supplementation may be most valuable when correcting a deficiency.

Clinical recommendation: Doses between 750 mg and 1,000 mg of EPA per day have been studied with some consistency. The onset of benefits is gradual, often requiring 8 to 12 weeks, and supplements should be taken consistently. Omega-3s are generally well tolerated and may also confer cardiovascular and mood-related benefits.

Iron and Zinc: Critical for Neurological Function

Iron and zinc are trace elements that play vital roles in dopamine metabolism, enzyme function, and neural activity. Low levels of these minerals have been observed in children with ADHD, and targeted supplementation has been proposed as a strategy to address this.

In a controlled trial, Konofal et al. (2008) found that iron-deficient children exhibited more severe ADHD symptoms, and that iron supplementation significantly improved attention and hyperactivity ratings. Similarly, zinc supplementation has shown promise in reducing impulsivity and improving response to stimulant medications, although findings remain mixed and more research is required.

Clinical caution: Routine supplementation without confirming a deficiency is not advisable, especially with iron, due to the risk of toxicity. Blood tests assessing serum ferritin and plasma zinc should precede any intervention. Supplementation may be particularly relevant in populations with restricted diets or underlying nutritional concerns.

Magnesium: Supportive but Inconclusive

Magnesium is involved in neurotransmitter modulation, stress response, and sleep regulation. Individuals with ADHD have been found in some studies to have lower magnesium levels, although the clinical implications of this finding remain uncertain.

A study by Noah et al. (2021) reported that magnesium, when combined with vitamin B6, significantly improved emotional stability and reduced anxiety symptoms in students under academic stress. While not ADHD-specific, the findings suggest potential relevance, particularly for individuals with comorbid anxiety or sleep disturbances.

Clinical application: Magnesium is generally safe at moderate doses and may assist in reducing muscle tension, improving sleep quality, and enhancing mood regulation. Side effects, primarily gastrointestinal, are infrequent when dosing guidelines are followed.

Treatments Lacking Empirical Support

Despite their popularity, several supplements and natural interventions lack convincing evidence for efficacy in ADHD treatment.

• St. John’s Wort has shown no meaningful benefit in reducing ADHD symptoms in controlled trials. Furthermore, it can interfere with the metabolism of many medications, including antidepressants and stimulants, posing significant safety risks.
  
  
• Homeopathy has repeatedly failed to demonstrate efficacy beyond placebo in well-designed studies. While it may provide comfort or support as part of a therapeutic routine, it should not replace evidence-based treatments.
  
  
• Sugar Elimination Diets, though widely believed to reduce hyperactivity, are unsupported by robust data. Wolraich et al. (1995) conducted a meta-analysis and found no significant correlation between sugar intake and behavioural changes in children without a diagnosed allergy or intolerance.

While diet quality undoubtedly affects overall health and well-being, attributing ADHD symptoms solely to dietary sugar is scientifically unfounded and may divert attention from more effective interventions.

Principles for Safe Supplement Use

When considering the addition of supplements to an ADHD treatment plan, several principles should guide decision-making:

1. Seek professional evaluation. Before starting any supplement, especially minerals like iron or zinc, it is essential to assess baseline nutritional status through blood work. Medical professionals can help evaluate risks and monitor for adverse effects.
   
   
2. Prioritise evidence and quality. Choose products supported by empirical studies, and favour those that have been independently tested for purity, potency, and contaminants. Health Canada’s Natural Product Number (NPN) provides one means of verifying safety and regulation.
   
   
3. Avoid high-dose or multi-supplement regimens. Combining multiple products without supervision increases the risk of side effects and interactions. Start with a single supplement and monitor symptom changes over time.
   
   
4. Track outcomes systematically. Use journals or validated symptom rating scales to measure changes in focus, impulsivity, sleep, or mood. This approach facilitates evidence-based decision-making and helps identify whether the supplement is contributing positively to overall function.

Integrating Natural Remedies into a Broader ADHD Management Plan

Supplements and natural remedies can serve as helpful adjuncts to ADHD management when selected judiciously and supported by clinical evidence. However, they are rarely sufficient as stand-alone treatments for moderate to severe symptoms. The most effective outcomes are generally achieved when supplements are integrated into a comprehensive treatment plan that may include:

• Cognitive-behavioural therapy (CBT) to develop executive functioning and emotional regulation skills.
  
  
• ADHD coaching or skills training to promote structure, accountability, and adaptive routines.
  
  
• Pharmacological interventions, where appropriate, to address core symptoms.
  
  
• Lifestyle modifications, including physical activity, sleep hygiene, and time management strategies.

When used thoughtfully, natural treatments can enhance quality of life and support long-term wellness. They are not a replacement for evidence-based care but may represent valuable tools for individuals seeking to personalise their treatment journey.

Conclusion

The use of supplements and natural remedies in ADHD treatment reflects a growing interest in holistic and patient-centred care. Among the available options, omega-3 fatty acids, iron, zinc, and magnesium demonstrate the most empirical support, particularly when correcting identifiable deficiencies. Conversely, several popular interventions, such as St. John’s Wort and sugar elimination diets, lack consistent evidence and may carry risks when used improperly.

Ultimately, decisions regarding natural treatments should be made in collaboration with qualified healthcare providers, grounded in scientific evidence, and closely monitored for effectiveness and safety. Through this integrative approach, individuals with ADHD can pursue symptom relief while fostering greater autonomy and self-understanding in their care.

Finding Focus Care Team

We are a group of nurse practitioners, continuous care specialists, creators, and writers, all committed to excellence in patient care and expertise in ADHD. We share content that illuminates aspects of ADHD and broader health care topics. Each article is medically verified and approved by the Finding Focus Care Team. You can contact us at Finding Focus Support if you have any questions!

References

Chang, J. P., Su, K. P., Mondelli, V., Pariante, C. M., & Pariante, C. (2018). Omega-3 polyunsaturated fatty acids in youth with attention deficit hyperactivity disorder: A systematic review and meta-analysis of clinical trials and biological studies. European Neuropsychopharmacology, 28(8), 1173–1185. Link  

Konofal, E., Lecendreux, M., Arnulf, I., & Mouren, M. C. (2008). Iron supplementation for ADHD. Pediatric Neurology, 38(1), 20–26. Link

Noah, L., Dye, L., Bois De Fer, B., Mazur, A., Pickering, G., & Pouteau, E. (2021). Effect of magnesium and vitamin B6 supplementation on mental health and quality of life in stressed healthy adults: Post-hoc analysis of a randomised controlled trial. Stress and health : journal of the International Society for the Investigation of Stress, 37(5), 1000–1009. Link  

Wolraich, M. L., Wilson, D. B., & White, J. W. (1995). The effect of sugar on behaviour or cognition in children: A meta-analysis. JAMA, 274(20), 1617–1621. Link