Magnesium for Kids:
What Parents Need to Know

Magnesium is an essential mineral that children need as they grow, develop and stay active. It contributes to normal muscle and nervous system function, energy metabolism, electrolyte balance and the development and maintenance of healthy bones and teeth.

Children can get magnesium naturally through a varied diet, while magnesium products are also available in different forms. Here’s what parents should know about magnesium for kids, where it comes from and how it can fit into everyday family routines.

Why Is Magnesium Important for Children?

Children's bodies are constantly growing, learning and moving, and magnesium is involved in many normal processes throughout the body.

Magnesium contributes to:

Normal muscle function
Normal nervous system function
Normal energy metabolism
Electrolyte balance
Normal protein synthesis
Healthy bones and teeth

The body cannot produce magnesium itself, so children need to obtain it from their diet and other appropriate sources.

How Much Magnesium Do Kids Need?

The amount of magnesium a child needs changes as they grow. Age, sex and life stage all influence nutritional requirements, which is why a toddler's needs are different from those of a teenager.

Australian Nutrient Reference Values provide age-specific recommendations for magnesium intake.

Magnesium per day for each age group:

1–3 years - 80 mg

4–8 years - 130 mg

Boys 9–13 years - 240 mg

Girls 9–13 years - 240 mg

Boys 14–18 years - 410 mg

Girls 14–18 years - 360 mg

These figures refer to daily dietary magnesium intake, not the amount of topical magnesium that should be applied to the skin.

Where Can Children Get Magnesium From?

Food should be an important source of magnesium for children.

Fortunately, magnesium occurs naturally in many everyday foods, including:

Nuts and seeds
Beans and lentils
Whole grains
Leafy green vegetables
Avocado
Some dairy foods
Some fish and seafood

Rather than focusing on one particular "high-magnesium" food, aim for a varied, balanced diet containing plenty of nutrient-rich whole foods.

For younger children, remember that whole nuts and some other foods can present a choking risk and should only be offered in age-appropriate forms.

Magnesium & Growing Bodies

Childhood and adolescence involve enormous amounts of physical growth and development.

Magnesium contributes to normal protein synthesis and the development and maintenance of healthy bones and teeth, making it an important part of childhood nutrition.

Magnesium is only one piece of the puzzle, though. Growing children also need adequate:

Protein
Calcium
Vitamin D
Iron and other essential nutrients
Regular physical activity
Quality sleep

A varied diet remains the foundation for meeting children's nutritional needs.

Magnesium for Active Kids

Whether they're playing sport, swimming, riding a bike or simply running around the backyard, children's muscles and energy systems are constantly being put to work.

Magnesium contributes to:

Normal muscle function
Energy metabolism
Electrolyte balance
Normal protein synthesis

Maintaining an adequate magnesium intake is therefore part of good nutrition for active and growing children.

Magnesium & Children's Sleep

Magnesium is frequently mentioned when parents are searching for ways to support their child's bedtime routine.

Magnesium contributes to normal nervous system and psychological function, but it isn't a sedative or sleeping medication. Children's sleep can be influenced by many factors.

Magnesium can form part of a broader evening routine alongside good sleep habits such as:

Keeping a consistent bedtime
Reducing screens before bed
Having a bath or shower
Keeping the bedroom calm and comfortable
Reading together
Following a predictable wind-down routine

If your family uses topical magnesium, evening application can easily become another familiar step before bed.

Creating a Simple Magnesium Bedtime Routine for Kids

A bedtime routine doesn't need to be complicated. Keeping it simple and consistent can make it easier for both children and parents.

1. BATH OR SHOWER

Start winding down for the evening with a warm bath or shower.

2. APPLY KIDS MAGNESIUM

Apply your Kids Magnesium Spray according to the product directions and allow it to dry naturally.

3. QUIET TIME

Dim the lights, put away screens and choose a calming activity such as reading together.

4. BEDTIME

Keep bedtime relatively consistent so the routine becomes familiar.

What Is Kids Magnesium Spray?

Kids magnesium spray is a topical magnesium product designed to be applied directly to the skin.

Our Magnesium Relief Kids Spray uses a half-strength formulation compared with our Original Magnesium Oil Spray, giving families a dedicated children's option rather than using the same high-strength formula designed for adults.

It's quick to apply and can easily be incorporated into a child's normal morning or evening routine.

→ Explore Kids Magnesium Spray

Where Can You Apply Magnesium Spray on Kids?

Always follow the directions provided with your particular magnesium product.

Depending on those directions, convenient application areas may include the:

Feet
Calves
Legs
Arms

Avoid the eyes, mouth and other sensitive areas, as well as broken or irritated skin.

If your child has particularly sensitive skin, start cautiously and pay attention to how their skin responds.

Why Can Magnesium Spray Tingle?

Topical magnesium chloride can sometimes produce a tingling, itching or stinging sensation when applied to the skin.

The sensation can be more noticeable on:

Dry skin
Sensitive skin
Irritated skin
Broken or damaged skin

If your child finds the sensation uncomfortable, stop using the product on that area and rinse the skin with water.

Can Children Use Magnesium Every Day?

Whether a child should use a topical magnesium product every day depends on the individual product, child's age and product directions.

For our Magnesium Kids Spray, follow the recommended application amount and frequency shown on the product.

More isn't necessarily better. There is no need to continually increase the number of sprays simply because a product is being used regularly.

If your child has a medical condition, takes medication or you have concerns about magnesium use, speak with an appropriate healthcare professional.

Kids Magnesium vs Adult Magnesium Spray

Not all topical magnesium products have the same concentration.

Kids Magnesium Spray

Our dedicated children's formulation is half the strength of our Original Magnesium Oil Spray, making it the appropriate Magnesium Relief option for children when used according to its directions.

Original Magnesium Oil Spray

Our Original Spray is a high-strength adult formulation designed for adult use according to its own directions.

Does My Child Need More Magnesium?

There isn't one symptom that can reliably tell you that your child needs more magnesium.

Tiredness, muscle cramps, poor sleep or changes in behaviour can have many possible causes, so these shouldn't automatically be interpreted as signs of magnesium deficiency.

The best starting point is usually your child's overall diet.

Look at whether they're regularly eating a variety of:

Vegetables
Whole grains
Nuts and seeds in age-appropriate forms
Legumes
Other nutrient-rich foods

If you're concerned about your child's magnesium intake, growth, diet or possible nutritional deficiency, discuss it with a GP, paediatrician or accredited practising dietitian rather than trying to diagnose a deficiency from symptoms alone.