6 Best Supplements & Vitamins for Adults and Kids with ADHD

"Like behavioral therapy, supplements and vitamins provide a gentler way to ease symptoms and can often be used in tandem with medication"

Whether or not you or your child takes prescription medication for ADHD, it’s always useful to find natural ways to manage symptoms, from making smart dietary choices to getting enough sleep. Another factor that can make a difference is incorporating supplements into your treatment plan. This can also be a convenient choice for those who are unsure about medication and want to exhaust all other options first before resorting to pharmaceutical drugs. After all, the CDC has suggested trying options like behavioral therapy first before turning to prescription medication, especially for young children.1 Like behavioral therapy, supplements and vitamins provide a gentler way to ease symptoms and can often be used in tandem with medication (if the medication has no contraindications) for better results. See below for the best supplements and vitamins for ADHD.


Several researchers have highlighted a connection between omega-3s and ADHD. One study found that omega-3 levels were reduced in children with ADHD and dietary supplementation resulted in improvements of symptoms.2 Another study showed that dietary supplementation of omega-3s led to increases in brain activation in the prefrontal areas and improved task performance in both children with ADHD and typically developing children.3 And yet another study revealed that low omega-3 levels weren’t just related to ADHD symptoms in subjects, but also poor emotion regulation and emotion processing, proving that supplementation can help ADHD individuals with their emotional intelligence.4 

Omega-3s for kids: While there are a variety of gummies and other child-friendly supplements for kids, incorporating omega-3s into your child’s diet is also recommended. Salmon and canned light tuna are good sources of omega-3s, as well as eggs. Walnuts are another natural source. If your child refuses any of these foods, you can sneak omega-3s into their favorite smoothie by stirring in a teaspoon of flaxseed oil.

Omega-3s for adults: If salmon and tuna are not your favorite types of fish, try sardines, mackerel, oysters, or shrimp. Beef is another good source of omega-3s. You might also want to sprinkle flax seeds or chia seeds over your yogurt or cereal, or throw them into a morning smoothie.  


Similar to omega-3s, researchers have found a link between low zinc levels and ADHD. Studies show that zinc is necessary in the metabolism of melatonin, which plays an important role in the regulation of dopamine, and dopamine is a key factor in the pathophysiology of hyperactivity.5, 6 Therefore, supplementation can help reduce symptoms of ADHD, primarily hyperactivity 

Zinc for kids: Beyond child-friendly zinc supplements, natural sources include turkey, chicken, whole wheat bread, and eggs. Whole-grain cereals are also an easy source of zinc for kids.

Zinc for adults: Other natural sources include oysters (which reportedly has the most zinc than any other food), herring and soybeans. Molasses is another rich source of zinc, but be sure not to overdo it because molasses is also high in sugar. 

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There is some evidence that shows individuals with ADHD are iron-deficient and supplementation can help reduce symptoms.7 This is because, like zinc, iron is a coenzyme of dopamine synthesis and therefore iron deficiency alters dopamine receptor density and activity, leading to hyperactivity and other related ADHD symptoms. In a study of 23 non-anemic children with ADHD, iron supplementation improved symptoms over the course of 12 weeks.8 

Iron for kids: If you’re looking for natural sources of iron as opposed to child-friendly supplements, iron is an easy addition to your kid’s diet. Beans, including black, pinto, and lentil, are all a rich source of iron, as well as turkey and chicken. A healthy snack of raisins or sweet dates can also boost iron levels as well as iron-fortified whole grains like cereal, pasta, bread, and rice. 

Iron for adults: Other sources of iron include nuts, tofu and leafy greens. Meat sources include lean red meats like beef, pork, and lamb, and seafood like salmon, shrimp, and clams.

Vitamin C

According to Dr. Ned Hallowell, a psychiatrist specializing in ADHD, vitamin C is important in modulating the neurotransmitter dopamine at the synapses in the brain.9 Studies show that supplementation with flax oil and vitamin C have a “significant improvement” in the symptoms of ADHD, particularly hyperactivity.10 However, it should be noted that if you are taking ADHD medications, vitamin C should not be taken less than an hour before or after taking ADHD meds because it prevents the medication from being absorbed.

Vitamin C for kids: Vitamin C supplements for kids are some of the most common to find, but it can also be found in common kid foods like oranges, apples, berries, and potatoes. Interestingly, vitamin C helps the body absorb iron better, so pairing foods with these nutrients is highly beneficial.11  

Vitamin C for adults: Some other ways to incorporate vitamin C into your diet include bell peppers, tomatoes, and cruciferous vegetables like broccoli, cabbage, and Brussels sprouts.


Magnesium is often used as a supplement for anxiety because of its calming effects. But studies show it can also have a positive impact on ADHD symptoms by significantly reducing hyperactivity.12 Studies also show that combining magnesium with vitamin D can have even more powerful results, including a significant reduction in emotional problems, conduct problems, and peer problems.13 However, it should be noted that the source of magnesium is important. The popular supplement CALM sources its magnesium from the sea, which means it contains trace amounts of arsenic and the chemical toxins cadmium and lead. These chemicals are known to cause damage to the vital organs of the body as well as the reproductive organs of the body, though CALM does claim that these trace amounts of toxins and metals are safe for consumption.

Brillia also contains magnesium in addition to its active ingredient, antibodies to the brain-specific S100B protein, which plays an important role in mood regulation and neuroplasticity. However, this magnesium is pharmaceutical grade and not sourced from the sea. This allows users to experience the benefits of Brillia’s unique active ingredient and magnesium without harsh side effects or health risks.   

How Brillia Can Help

Brillia is a non-prescription homeopathic medication offering a gentle and impactful approach to reducing symptoms of ADHD and anxiety. Combining antibody science with healthy habits, Brillia relies on a holistic approach to reducing symptoms like hyperactivity, stress, irritability, and impulsivity while improving focus and clarity. This is achieved without harsh, synthetic chemicals or harmful side effects. There are no contraindications associated with Brillia either, so you or your child can add the medication to your regimen at any time, whether you are taking ADHD medication or not. There are two formulations available: Brillia for Children and Brillia for Adults and each contain antibodies to the S100B protein. Studies show that when this protein is out of balance in the body, anxiety, irritability, and inattention arise; Brillia helps to reinstate this balance.14  

Learn more about how Brillia works and find resources on how to manage ADHD symptoms and anxiety at the Brillia blog.

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References: 1https://www.cdc.gov/media/releases/2015/p0401-ADHD.html, 2https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4321799/, 3https://www.nature.com/articles/npp201573, 4https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5559876/, 5https://pubmed.ncbi.nlm.nih.gov/20034331/, 6https://www.ncbi.nlm.nih.gov/pmc/articles/PMC161723/, 7https://jamanetwork.com/journals/jamapediatrics/fullarticle/485884, 8https://pubmed.ncbi.nlm.nih.gov/18054688/, 9http://qanc.com.au/6-essential-often-overlooked-supplements-adhd/, 10https://pubmed.ncbi.nlm.nih.gov/16314082/, 11https://www.hsph.harvard.edu/nutritionsource/vitamin-c/, 12https://pubmed.ncbi.nlm.nih.gov/9368236/, 13https://bmcpediatr.biomedcentral.com/articles/10.1186/s12887-021-02631-1, 14https://pubmed.ncbi.nlm.nih.gov/23972702/

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