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Supports Healthy Bones, Muscles, & Nerves

Magnesium is essential for helping muscles contract, nerves transmit signals, and bones retain strength. Paired with vitamin D3, this formula supports the physical foundation of your body—keeping you moving, balanced, and supported every day.

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Supports Energy Levels

Magnesium contributes to normal energy production by assisting in the conversion of food into usable cellular energy. Our formula provides bioavailable forms of magnesium to help reduce tiredness and support your body’s vitality.

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Resilience & Everyday Wellness

Zinc plays a quiet but crucial role in immune system support and cellular defence. We’ve included two absorbable forms—zinc citrate and zinc glycinate—to help support your body’s everyday resilience and protection against oxidative stress.

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Three Magnesium Forms. One Complete Formula.

Triple-Sourced Magnesium

Our formula includes magnesium citrate, glycinate, and phosphate—each chosen for its specific absorption profile and role in supporting muscle, nerve, and energy systems.

Dual-Source Zinc

We’ve included two complementary forms of zinc—citrate and glycinate—to help support immune function and metabolic activity with optimal bioavailability.

With Vitamin D3

Vitamin D3 works synergistically with magnesium to support bone health, muscle function, and immune system health.

Clinically-Informed Doses

Each capsule is precisely dosed to deliver 102.66 mg of magnesium, 4 mg of zinc, and 12.5 mcg of vitamin D3—grounded in evidence, never in excess.

HPMC Capsule

Made with hypromellose, our capsules are completely gelatin-free and suitable for vegetarians and vegans.
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Our Promise
60-Day Money-Back Guarantee
Made is Australia
Non-GMO & Pesticide-Free
No Artificial Flavours
Vegan-Friendly
Naturally Dairy-Free
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Triple-Source Magnesium
Dual-Source Zinc
Enhanced with Vitamin D3
Vegan-Friendly Capsules
Non-GMO & Pesticide-Free
No Artificial Flavours

Frequently Asked Questions

What ingredients does this product contain? 

Magnesium Citrate, Magnesium Glycinate, Magnesium Phosphate, Zinc Citrate, Zinc Glycinate, Cholecalciferol (Vitamin D3), Hypromellose (capsule shell), Magnesium Stearate, Silicon Dioxide.

How many capsules should I take each day?

Adults: Take two capsules daily with food, or as directed by your healthcare professional.

Is it vegan and vegetarian-friendly?

Yes. This formula contains no animal-derived ingredients. The capsule shell is made from plant-based hypromellose and is suitable for vegetarians and vegans.

Why do you use three forms of Magnesium?

We use magnesium citrate, glycinate, and phosphate to support a broader absorption profile and gentle digestion. Each form is chosen for its bioavailability and functional role in the body—helping support muscle activity, nerve transmission, and energy production more effectively than single-source magnesium alone.

Why include zinc and vitamin D3 in a magnesium supplement?

Zinc and vitamin D3 work alongside magnesium to support core functions in the body. Zinc contributes to immune system function and cell protection, while vitamin D3 supports muscle and bone health. We include two forms of zinc—citrate and glycinate—for effective absorption.

What is Theonia’s return policy?

We offer a 60-day money-back guarantee. If you would like to return your order, please contact us, and we will issue you a return number to include with the package along with further instructions.

When will my order be dispatched to me?

Your products will be dispatched within 1 working day of placing your order.

Support Your Energy, Move With Ease, Feel Your Best

Experience the Benefits of Our Magnesium Complex

Our Magnesium Complex combines three highly absorbable forms of magnesium, two types of zinc, and a supportive dose of vitamin D3. Together, these nutrients help support energy production, muscle function, and immune health—delivered in a formula designed for comfort, absorption, and consistency you can feel.

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Don't just take our word for it...

Thousands of people love this product - find out why

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Your wellness is our priority If for some reason you have any questions or concerns with our line of products, please reach out and we will be more than happy to make it right.
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