For many years, magnesium has been described as an important factor in cellular activity. This chapter provides an overview of magnesium transport pharmacology and genetics, followed by a review of clinical and biological studies involving magnesium and vitamin B6 (Mg–B6) supplementation in children with attention deficit/hyperactivity disorder (ADHD) and autism spectrum disorders (ASD).
Although no fully rational, controlled study has been published, several experimental and clinical observations suggest a potential beneficial effect of Mg–B6 supplementation in these conditions. Reported findings include reductions in hyperactivity and improved stability of school-related behavior. These observations indicate the need for controlled studies to confirm or reject these findings.
Magnesium is the second most abundant intracellular cation in the body.
It plays a key role in regulating enzyme activity, calcium and potassium channel function, membrane stabilization, and maintaining sodium and potassium gradients across cell membranes. Magnesium deficiency has been associated with several clinical conditions, including hypocalcemia, hypokalemia, cardiac arrhythmias, neuromuscular excitability, hypertension, atherosclerosis, and osteoporosis.
Some evidence suggests magnesium may also be involved in neurological conditions
such as ADHD and autism; however, direct confirmation is still lacking. ADHD and ASD are distinct neurodevelopmental disorders, and a possible role of magnesium imbalance has been proposed due to the presence of magnesium transport mechanisms in the brain, including TRPM channels.
ADHD is one of the most common neurobehavioral disorders in children and can affect emotional development, social functioning, and educational outcomes. Alongside standard treatments such as methylphenidate and other stimulant medications, vitamin B6 and magnesium have also been used in some interventions.
For more than 30 years, parents have reported using magnesium and vitamin B6 supplementation in children with ADHD, observing reduced physical aggression and improved social interaction. However, limited scientific studies have examined the relationship between magnesium status and ADHD symptoms. Some research has suggested that children with ADHD may have altered magnesium status, including lower intracellular magnesium levels rather than changes detectable in standard serum testing.
This condition has been described more precisely as intracellular magnesium deficiency, which may affect neural transmission due to sensitivity of neuronal signaling to ionic balance.
In autism spectrum disorders, magnesium and vitamin B6 have also been studied. Research from multiple groups has reported that Mg–B6 supplementation may benefit approximately half of individuals with autism. Some double-blind, placebo-controlled studies have reported improvements in behavioral symptoms, adaptive behavior, brain wave activity, and urine biochemical markers. Additional observations suggest possible reductions in seizure activity and improvements in attention, learning, speech, and eye contact.
A pilot study involving a multivitamin and mineral supplement in children with ASD also reported improvements in sleep and gastrointestinal symptoms compared with placebo.
Every child has unique nutritional needs, and magnesium may play a supportive role in overall wellbeing as part of a balanced diet. Magnesium gummies offer a simple, enjoyable way to help children meet their daily intake, making consistent supplementation easier for families when recommended by a healthcare professional.
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Despite these findings
results remain inconsistent, and some studies have reported contradictory outcomes. Due to these mixed results, Mg–B6 supplementation in ADHD and ASD remains a subject of ongoing scientific debate.
Further research has been proposed to clarify the relationship between magnesium status, neurobehavioral symptoms, and the potential effects of magnesium and vitamin B6 supplementation in children.
