Introducing Growing Up ™ Magnesium – The First Dual-Form Magnesium + Prebiotic Blend for Kids

We’re thrilled to announce Growing Up ™ Magnesium, the first magnesium + prebiotic blend designed just for toddlers and kids.

At Begin Health, we empower families with tools, knowledge, and nutrition that build healthy, gut-positive habits for life. We created Growing Up™ Magnesium for today’s parents, navigating busy schedules, picky eating, and the reality that modern diets often fall short on key nutrients, including magnesium.

Why Magnesium Matters for Kids

Magnesium is a cofactor for over 300 enzymatic reactions that drive energy production, muscle contraction, and bone health (2). It also plays a critical role in electrolyte balance and neuromuscular relaxation (2,3).

Research from 2024 shows that magnesium insufficiency is more common than most parents realize, with nearly 1 in 3 (34.3%)  healthy children found to have insufficient magnesium intake (1). Data also show that adequate magnesium intake is positively associated with linear growth in children during the first two years of life (4), showing just how important magnesium is for healthy development. 

For families with selective eaters or kids consuming fewer whole grains, legumes, nuts, and leafy greens (the foods where magnesium is most abundant), meeting daily needs can be a challenge.

What Makes Growing Up ™ Magnesium Different

We designed Growing Up Magnesium™ to deliver gentle, effective magnesium support in a form kids will actually enjoy:

• Dual magnesium forms (citrate + glycinate) – chosen for their bioavailability and gastrointestinal tolerability, supporting smooth-muscle activity and gut motility (2,3)

• Potassium citrate – to help maintain hydration and electrolyte balance (3)

• Prebiotic kiwi powder – clinically studied to support stool frequency, consistency, and GI comfort (5,6)

• Agave inulin – a well-tolerated prebiotic fiber that feeds beneficial gut bacteria and supports the production of short-chain fatty acids for healthy stooling and gut barrier integrity (7)

The Power of Actazin® Kiwi Powder

Magnesium is just one piece of the puzzle; supporting healthy digestion also means nourishing the gut microbiome. That’s why Growing Up™ Magnesium features Actazin® kiwifruit powder, a whole-fruit prebiotic ingredient that has been clinically studied for its ability to support gut motility and bowel regularity. 

Green kiwifruit provides a unique combination of soluble and insoluble fibers, natural enzymes like actinidin, and polyphenols that work together to gently support healthy digestion (5,6). Clinical studies show that daily consumption of green kiwifruit, or kiwifruit powder, can significantly improve stool frequency, consistency, and GI comfort in both healthy individuals and those with occasional constipation (5,6).

When paired with magnesium citrate and glycinate, which help support smooth muscle contraction in the gut, this creates a well-rounded approach to helping kids stay comfortable, regular, and supported from the inside out.

Our Commitment to Families

At Begin Health, we have supported thousands of families navigating constipation and gut health challenges, which are among the most common concerns in pediatrics. Parents tell us they want solutions that go beyond laxatives and help their kids build healthier habits for life.

Growing Up Magnesium™ was created with that mission in mind. It gives kids the nutrients and gentle gut-friendly support they need for more resilient guts and gives parents peace of mind that they are supporting their child’s health every single day.

This product reflects our belief that resilient health starts with nutrition that works with your kid’s gut and body and not against it. Thank you for including Begin Health as part of your family’s health journey. We can’t wait to see the difference this makes in your homes.

Madeline Lauf
Founder & CEO, Begin Health