Wide awake at 3am. Again.
Low magnesium could be part of why.
Here are the 3 reasons, and why the right form and dose change everything.
$69.99 $56.00· less than $0.94 a night
$69.99 $56.00· less than $0.94 a night
Full therapeutic doses
Three bioavailable forms
Third-party tested
GMP-certified USA facility
Next-day NZ dispatch
Your stress hormones don't settle overnight
Cortisol is your main stress hormone. It's meant to stay low through the night and only rise as morning approaches. When it doesn't, sleep turns shallow and easy to break, and you surface at 2 or 3am for no obvious reason.
Magnesium plays a role in the body's normal stress response. When your levels are low, that overnight quiet is harder to hold, so your body sits closer to waking all night. It's a pattern that tends to get louder through your 40s and 50s, as sleep naturally becomes lighter and easier to interrupt.
This often shows up as
- Waking at the same time most nights
- Feeling wide awake the moment you stir
- Light, thin sleep after 2am
Your brain won't
switch back off at 3am
Falling back to sleep relies on GABA, your brain's natural calming signal. Magnesium supports normal GABA activity. When magnesium is low, that calming signal struggles to come through, so once something wakes you, your brain stays alert instead of winding back down.
That's why you can feel exhausted and still lie there, watching the minutes stack up.
This often shows up as
- A mind that starts up the moment you wake
- Tired but wired in the small hours
- An hour or more to drift off again
Your body holds tension that keeps sleep shallow
Magnesium supports normal muscle and nerve relaxation. When levels are low, muscles hold tension they should be releasing overnight. Tossing and turning, or cramps that hit in the night, pull you out of the deeper stages, sometimes without fully waking you.
So even a full night in bed can leave you feeling like you barely slept.
This often shows up as
- Restlessness in bed
- Muscle tightness or night cramps
- Waking unrefreshed after a full night
Why the magnesium you tried didn't work
It almost certainly wasn't the magnesium. It was how it was made. Four corners get cut to hit a price, and each one quietly takes the result with it.
Cheap, poorly absorbed forms
Underdosed by design
Capsules can't fit a real dose
Cheap raw materials from overseas
Three forms. Three jobs. One scoop.
Most supplements pick one form of magnesium. We use three so the full 400mg dose covers sleep, muscles, and the nervous system at the same time.
Magnesium Lysinate Glycinate Chelate
Magnesium Citrate
DiMagnesium Malate
The supplement industry runs on cheap forms, fractional doses, and good marketing.
Most products are formulated to a price point, not to a result. That's why most people don't feel anything when they take them.
Three forms. Full therapeutic dose. USA-sourced raw materials. FDA-regulated facility. Third-party tested every batch. No fillers. No corner-cutting.
It costs more than a tub of magnesium oxide. It should. It's a different product.
The most reviewed magnesium in New Zealand
Available in 150+ stores nationwide
Customer Reviews
Overall rating: 4.8 / 5 from 1630 reviews.
Astaxanthin is vital for us all in this aging process. Every blessing we can get for all round health and optimal function is a bonus. We are grateful for the bioavailable source. Regards Steve and Fiona
I have tried many supplements over the years. Some I’ve stopped using because I didn’t notice a difference. I Will always aim to keep astaxanthin as part of my stack. I have noticed such an amazing change in my skin. My skin has always been good, but this has taken it to another level. I love this product! I particularly love the Biosphere brand as they use olive oil in the capsules, rather than seed oils. Really happy to support this NZ company.
Great product, I have been using it to help my eyes feel more comfortable ( post menopause) , they are definitely less scratchy than they were! I can’t wait to try the magnesium yet, it looks really good.
We both have the best sleep usimg this product. I am about to put in another order.
Lovely flavour and works really well.
I rely on 'Sleep' to help my sleep. Its a vial part of my evening ritual. I notice when I dont take it
Great for dry eyes. Best I've tried
Take this every night for restless legs and sleep . Alternate between the 2 flavours
Very good product but I did have to adapt it. I found taking it just before bed it would give me a hit of energy. So I no take it with dinner or just after around 7 and it gives my body time to process the ashwaganda. I still do have trouble sleeping but I do feel the nights I do sleep it’s a deeper sleep. I am going through a lot of stress and biological changes but I do feel it has helped just not as much as I hoped. The flavour is delicious and the customer service was awesome. I’m going to try the plain magnesium next time as I think ashwagandha not well suited to me
Great product - slept soundly :)
Really like the Biosphere Magnesium. It's so helpful before and after hard physical work when I tend to get plagued with cramp. Alongside other salts & good hydration it's been great .Also very pleasant to drink. My wife also likes to use it at night for restless legs & to help relax. 😊
I have systemic health issues and this is great for sleep, nerves and digestion (in a slow moving system). Great combination of types of magnesium. Easy to mix and take.
Great product. I take it every morning 🙂
Having parkinsons disease, exercise is very much my medication but has consequences the magnesium helps with the cramps and sleep quality which makes tomorrow better.
Love this product, after my first month I have far more mobility, energy and stamina, will be purchasing more...
I haven't gotten my very first bottle yet, but I will be ordering more. Capsules are easy to swallow, and makes it easy that need to take with food . Easy to remember with breakfast
It’s one of those things that you don’t you don’t know what you’ve got ‘til it’s gone! I was sleeping well and didn’t notice my gym recovery was good until I ran out of magnesium! Without it, my sleep is terrible and I’m sore for days after working out. Ordering more now!
On my second month of astaxanthin, not much change except a little more energy generally. Will give it a full three months.
I am so happy with my Astaxanthin . Can’t believe that it has worked so quick at pain relief . I have tried lots of other products in many years and I think this is the best thing I have tried . I have no pain and it so good . I hope this keeps up I have arthritis and and a few joint replacements so always in pain . Thank you
Awesome flavour magnesium for a massive day in the mountains!!!
Both flavours are nice and the powder mixes well. No longer getting night time cramps, so very happy with this. Will definitely be continuing with this product.
Awesome product.
I've been taking Biosphere Nitric Oxide for just over 5 weeks now. Before I started my blood pressure was in the 140s/150s/ 90s. This month I have only had one spike and my daily readings are consistently lower with some now in the ideal or normal range. I am really pleased with this result so far.
Ive been taking these now for a little over a month an just love the way my skin feels, an how its helped me not getting any flu this winter . As a shift worker doing 12 hr shifts I think its really been a great help getting me thru the day. I highly recommend them.
This magnesium is almost magic, I have had hip pain for several years and 5 weeks in it had totally gone. Unfortunately its a little hard on my stomach so have had to cut down the dose to half, I can just feel my hip pain a little again with the half dose. I will try supplementing the half dose with Astaxanthin next order.
I was getting regular muscle cramps at night and in the 30 days I trialled Biosphere Magnesium I only got a cramp once or twice. Since then I tried another brand of magnesium but haven't had the same success. Mixes easily and the lemon-lime flavour I tried us pleasant to drink.
I’ve been taking Bio sphere Nitric Oxide for a couple of years now as part of my supplement protocols. I workout at the gym and also do a lot of breathwork and this compliments everything I do.
It tastes good, easy to use, and I've halved my blood pressure tablet. It seems to be working for me and I intend to remove the blood pressure tablet totally in a week or so. It's coming on holiday with me!
Take it with my morning decaf that has coconut milk - so I am taking 2 capsules with some fats. Recently had people commenting on how nice my skin is looking. I am 60yo and recovering from cancer treatment.
Really happy with the magnesium powder, mixes well, tastes great and is now part of my daily routine.
Perfect start to my day…great flavour and definitely an improvement showing in my blood pressure levels!
The lemon/lime Magnesium powder is delicious and refreshing. It certainly is helping reduce cramps and helps me get to sleep quickly and sleep for longer periods.
I take magnesium after the gym to help with cramp.
Onto my first jar and already have a back up ready to go. Tastes delicious . Even bought a new bottle to use .
My husband is slowly reducing his blood pressure medication by using Nitric Oxide. Blood pressure is finally reducing
Been taking Astaxanthin for about 6 weeks now and definitely notice my eye and skin health is better, also seem to have a bit more energy.
A nightly routine, super power sleep when I take the magnesium - such a distinctly better sleep than nights I don’t take it.
I’ve recently changed to Biosphere Magnesium and will be reordering. It is so easy to take and adjust the amount as needed. I particularly like the Mango Pineapple flavour and take it just before bed to stop leg cramps.
Great product
I have this in the morning. Great tasting and refreshing. Great start to the day
What to expect with consistent nightly use
Magnesium does not force sleep. It removes the internal friction that makes sleep difficult. Here's the pattern most people report:
Evenings feel calmer
Falling asleep gets easier
Full benefit builds
Biosphere Magnesium
Less than $0.94 per night. Two months supply. NZD.
Choose flavour
- 400mg elemental magnesium per scoop
- USA-sourced magnesium forms, GMP certified, third-party tested
- Naturally flavoured. No fillers, no artificial sweeteners.
60-day money-back guarantee · Next-day Auckland dispatch
The only risk is not trying it.
Take it for 60 nights. If you're not feeling deeper, calmer sleep, get every dollar back. No questions, no hoops to jump through. 64% of customers reorder within 90 days. We're that confident it works.
Frequently asked questions
How fast will I notice a difference?
Most people feel a meaningful shift in sleep quality within 3 to 7 nights. Falling asleep faster and waking less in the night usually come first. Full benefit builds over 2 to 4 weeks as your magnesium levels restore.
Will it make me drowsy in the morning?
No. Magnesium works with your body's natural sleep cycle, not against it. Unlike sedatives or sleep medications, there's no morning grog. Most customers report waking refreshed and alert.
Is it safe to take with my medications?
If you're on prescribed medication, particularly blood pressure medication, antidepressants, or sedatives, please consult your GP before adding any supplement. Many customers use Biosphere Magnesium alongside their medications with medical supervision.
Can I take it long-term?
Yes. Magnesium is non-habit forming and your body doesn't develop tolerance. 64% of our customers reorder within 90 days, taking it as part of their ongoing nightly routine.
What does it taste like?
Naturally flavoured, sweetened with monk fruit and stevia. No artificial sweeteners, no synthetic flavours. Most customers find it pleasant enough to actually look forward to as a nightly ritual.
Is it vegan and allergen-free?
Yes. Biosphere Magnesium is vegan, gluten-free and dairy-free, with no artificial colours, flavours, fillers, or binders.
Everything you need. Nothing you don't.
Less than $0.94 per night. NZD.
- 1 tub of Biosphere Magnesium · 60 servings
- 20% off your first order, applied at checkout
- Next-day Auckland dispatch on every order
- 60-day money-back guarantee, no questions asked
