The Magnesium At The Supermarket Costs Less.
There's A Reason For That.
The form. The dose. The sourcing. Three things that determine whether magnesium actually works, or just looks good on the shelf.
- 60-day money-back guarantee
- Third-party tested
- Next-day Auckland dispatch
Most magnesium looks the same on the shelf. It is not.
Walk into any supermarket or pharmacy and you'll find magnesium for $20. The bottle looks the part. The label says magnesium. But the form inside, the dose per serve, the absorption rate, and where it was sourced all tell a different story.
We started with one question: what would the best magnesium in New Zealand actually look like?
Not the cheapest to produce. The best. The one people come back for because they feel what it does.
Here's exactly what makes it different.
And why it costs more.
Three things that separate Biosphere from everything else on the shelf.
A therapeutic dose. 400mg elemental magnesium per serve.
Most capsule-based products deliver 100mg of elemental magnesium per serve or less. Research showing real improvements in sleep and muscle function used 300 to 400mg per day. At 100mg, the product isn't equipped to produce the result.
Every serve of Biosphere delivers 400mg of elemental magnesium. The dose the research uses. The dose your body actually needs.
Three superior forms. Each absorbing at 15 to 20%.
The form of magnesium determines how much your body can actually use. Most cheap supplements use magnesium oxide, which absorbs at roughly 4%. That means almost everything on the label passes straight through.
Biosphere uses three high-absorption forms, each selected for a different function in the body.
All three absorb at 15 to 20%. That's not a marginal improvement over 4%. It's the difference between a supplement that works and one that doesn't.
GMP-certified USA sourcing. Heavy metal tested every batch.
No magnesium is made in New Zealand. The raw ingredients are imported, then packaged into products here. Most of it comes from China, where heavy metal thresholds are a lot looser.
Biosphere sources from a GMP-certified facility in the USA where acceptable heavy metal levels are strictly controlled. Every batch is independently tested.
That sourcing costs more. It's not something we compromise on.
of customers reorder within 90 days.
Not because of a subscription. Not because of a reminder email. Because they notice when they stop taking it. That number tells you more than any ingredient list or comparison table.
Real comments. Real people. Unprompted.
New Zealand's most reviewed magnesium • 150+ stores nationwide
- 60-day money-back guarantee
- Third-Party Lab Tested
- Next-day Auckland dispatch
60-Day Money Back Guarantee
If you don't feel a difference, you get every dollar back. No forms. No questions asked. Just email us.
Biosphere Magnesium
Less than $0.94 per night. Two months supply
Choose your flavour:
- Third-party tested every batch
- Naturally sweetened, no artificial additives
- Vegan, gluten-free, no allergens
Next-day Auckland dispatch
Third Party Lab Tested
New Zealand's most reviewed magnesium · 150+ stores nationwide
Every ingredient. Every dose. Nothing hidden.
Complete transparency. Even the flavouring.
This product comes as a powder, so taste matters. We use only natural flavours, sweetened with monk fruit extract and stevia leaf extract. Coloured with a dash of turmeric. No artificial sweeteners. No artificial colours. Nothing that disrupts your gut microbiome.
Magnesium Lysinate Glycinate Chelate
1000mg per serve / 100mg elemental magnesium
- Chelated for maximum absorption and digestive comfort
- Supports deep sleep, stress reduction, and nervous system calm
Magnesium Citrate
1000mg per serve / 150mg elemental magnesium
- Highly soluble, rapid absorption
- Supports muscle relaxation and bowel regularity
Dimagnesium Malate
750mg per serve / 150mg elemental magnesium
- Bound to malic acid, supports cellular energy production
- Supports reduction of muscle soreness and fatigue
Frequently Asked Questions
I’ve tried magnesium before and didn’t notice a difference. Why will this be different?
Almost certainly the form and the dose. Most products use low-absorption forms at 100mg per serve or less. Biosphere uses three high-absorption forms at 400mg per serve. That combination is what produces the result.
I’m already taking magnesium. Will I notice a difference switching to this?
Most people who switch notice a difference within the first week. When your body goes from a low-absorption form at 100mg to three high-absorption forms at 400mg, it feels the difference quickly. 64% of customers reorder within 90 days.
Why is it a powder instead of capsules?
To fit 400mg of elemental magnesium into capsules, you’d need to swallow roughly 6 to 8 per serve. A powder delivers the full therapeutic dose in one scoop mixed with water. It also absorbs faster than capsules and doubles as an evening ritual most customers look forward to.
When should I take it?
Most customers take it in the evening, 30 to 60 minutes before bed. Magnesium supports relaxation and sleep quality, so evening use gets the most benefit. That said, it works regardless of when you take it.
Is this safe with my other medications?
Magnesium at this dose is safe for most adults. If you’re taking prescription medications, particularly heart medications, antibiotics, or diuretics, check with your GP or pharmacist before starting.
What if it doesn't work for me?
You’re covered by our 60-day money-back guarantee. Give it a genuine try. If you don’t feel a difference, contact us for a full refund. No forms, no questions asked.
Most magnesium supplements are built to a price. This one is built to work.
Best available forms. Therapeutic dose. Heavy metal tested. 64% of customers reorder within 90 days. And a 60-day guarantee that means you don't pay if it doesn't work.
- 60-day money-back guarantee
- Third-party tested
- Next-day Auckland dispatch
