I know how overwhelming it feels when you’re trying everything to help your child focus, stay calm, and feel better in their own skin. Supplements seem like a safe, natural answer—and they can be powerful when used correctly. But here’s the hard truth: some supplements actually make ADHD symptoms worse.
In this episode, I walk you through the worst supplements for ADHD, why well-meaning parents reach for them, and what to do instead using a Regulation First Parenting™ approach that calms the brain before anything else.
How can iron supplements make my child’s ADHD worse?
Iron is often given for low energy or poor focus, but excess iron can be toxic—especially for kids who don’t actually need it.
When iron isn’t tested first, it can lead to:
- Increased irritability and aggression
- Stomach pain and constipation
- Worsened hyperactivity
I see parents shocked when behaviors escalate after “doing the right thing.” Always test ferritin and iron levels with a qualified provider before supplementing.
Why do B vitamins sometimes increase anxiety and irritability in kids with ADHD?
B vitamins support mood and energy—but not all kids can process them properly. Many neurodivergent kids have an MTHFR genetic variant that impacts how B vitamins are metabolized.
High doses or the wrong form can cause:
- Restlessness and anxiety
- Mood swings and sensory overload
- Sleep disruption
More is not better. Testing genetics and nutrient levels matters, and some kids need different forms—or none at all.
Can a children’s multivitamin really worsen ADHD symptoms?
Yes—and this one surprises parents the most. Many multivitamins are filled with:
- Artificial dyes and sweeteners
- Low-quality, poorly absorbed nutrients
- Hidden B vitamins that trigger symptoms
These additives can worsen emotional dysregulation and gut health—which directly impacts the brain. Just because it says “kids” doesn’t mean it’s safe for a dysregulated nervous system.
When your child is dysregulated, it’s easy to feel helpless. The Regulation Rescue Kit gives you the scripts and strategies you need to stay grounded and in control. Become a Dysregulation Insider VIP at www.drroseann.com/newsletter and get your free kit today.
What should I do instead of using the worst supplements for ADHD?
This is where Regulation First Parenting™ comes in. When you calm the nervous system, focus improves naturally.
Instead of broad or risky supplements, focus on:
- Targeted, single nutrients
- Clean labels with no dyes or fillers
- Practitioner guidance and testing
That’s why I created Neurotastic™ MultiMag Brain Formula—a magnesium blend designed to calm the ADHD brain and support regulation safely.

🗣️ “When you calm the nervous system, you power down chaos and power up focus.” — Dr. Roseann
Takeaway & What’s Next
You’re not failing—you’ve just been given incomplete information. Avoiding the worst supplements for ADHD is about working smarter, not harder. If you want to explore a deeper conversation about ADHD treatment choices, listen to the episode on Why You Shouldn’t Medicate Your Child with ADHD. You’re doing an incredible job showing up for your child.
FAQs
Could supplements be causing my child’s aggression?
Yes. Certain supplements can overstimulate a dysregulated nervous system, leading to irritability and aggression.
Is magnesium safe for kids with ADHD?
When properly formulated and dosed, magnesium can be one of the most supportive tools for calming the brain.
Why does my child react differently to supplements than other kids?
Neurodivergent kids often process nutrients differently due to genetics and nervous system sensitivity.
Tired of not knowing what’s really going on with your child? The Solution Matcher gives you a personalized recommendation based on your child’s behavior, not just a label. It’s free, takes just a few minutes, and shows you the best next step. Go to www.drroseann.com/help





