New Zealand's most reviewed magnesium
400mg of elemental magnesium per scoop, from three bioavailable forms. For deeper sleep and fewer night cramps.
$56.00$69.99Save 20%
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60-day money-back guarantee
400mg elemental magnesium
Three bioavailable forms
Third-party tested
GMP-certified facility
From people who switched
Verified buyer
"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."
Verified buyer
"Highly recommend this product to anyone. The best magnesium I've had. I've tried many types of magnesium and this is the best! I have so much more energy, nothing has worked as well as this."
Verified buyer
"Ive tried alot of magnesium and this is by far my favorite! I also tell alot of clients to get this only!"
Why this one
The dose
400mg
Many magnesium supplements give you 100 to 200mg of elemental magnesium a day. You take it for weeks, feel nothing, and decide magnesium doesn't work for you. One scoop of this is 400mg.
The form
3forms
Three bioavailable forms in one scoop, each gentle on digestion: a chelate for calm and sleep, citrate for muscles, malate for energy. See the three forms.
The proof
Everybatch
A label is a claim, not a measurement. Every batch is third-party tested for purity and potency before it ships. See the certificates.
Exactly what's in it
A powder you mix into a glass of water. Every ingredient and every dose is on the label.
100mg
Calm and deep sleep. Gentle on digestion.
150mg
Muscle relaxation. Highly bioavailable, eases cramps.
150mg
Energy and recovery. Bound to malic acid, which your cells use to make energy.
400mgof elemental magnesium per scoop
Other ingredients: citric acid, natural flavours, monk fruit extract, stevia leaf extract, and a colour from food sources (turmeric, beta carotene or fruit and vegetable juice powder, depending on the flavour).
$56.00$69.99Save 20%
Flavour: Blueberry-Pomegranate change
Why it costs what it costs
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.
We went the other way, and not out of virtue. One-off sales barely break even for us. If you don't feel it, you don't reorder, and we don't have a business.
It costs more than a tub of magnesium oxide. It should. It's a different product.
Check it yourself
Every batch is third-party tested for purity and potency before it ships, by an ISO/IEC 17025-accredited lab. We also sent the Lemon-Lime batch to a second, IANZ-accredited lab in Auckland to check the first result.
Tap to read the full certificates.
Certificate of Analysis · latest batches
Lots 27190-1, 27190-2 and 27190-3.
More than 40,000 tubs sold. The clearest sign a supplement is doing something is whether people buy it again. Then read what they say.
Overall rating: 4.8 / 5 from 1655 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 :)
Helps me stay asleep all night long
Prompt delivery and high quality. Noticed my eyesight not troubling me as much within a week.
It was a tough winter but this Biosphere Immune got us through.
I began taking this product 2 weeks ago to help with my sleep due to RLS and aching muscles due to injuries. Its great. I fall asleep well and sleep longer. I love the lemon lime flavour too!
Great quality astaxanthin and an easy addition to my daily supplement routine. I take it for its antioxidant, skin and general healthy-ageing benefits. Simple, well-dosed and no fuss. Very happy with it.
Awesome product!
Love it
Really like the flavour and taste, it encourages me to use it daily !
My husband and I have both been taking Biosphere Nitric Oxide, and we’ve been really happy with how we feel since starting it. We both feel so much better overall and have noticed a real difference in our general well-being and energy. It’s now become part of our daily routine, and based on our personal experience, we’re very pleased with it. It’s not often that we find a product that we both feel has made a noticeable difference, but this one has. We’ll definitely continue taking it!
Another one bites the dust! I’m really benefiting from taking this product every evening. I’m sleeping through the night, and waking refreshed. I would recommend this to anyone as a fuss free, easily digestible form of magnesium for settling your nervous system and allowing good sleep patterns.
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.
Take it every day for 60 days. If you can't feel the difference, get every dollar back. No questions, no hoops to jump through.
Refund processed promptly via the original payment method.
What people ask before they switch.
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.
If you're on prescribed medication, particularly blood pressure medication, antidepressants, or sedatives, please consult your GP before adding any supplement.
Don't stop or change anything you've been prescribed.
If yours is a lower dose, or a single form, that's the gap this closes: 400mg of elemental magnesium from three bioavailable forms. Most people notice it in their sleep first, inside the first week.
If you're already taking 400mg of a well-absorbed form and it's working, there's no reason to switch.
400mg of elemental magnesium doesn't fit in one capsule. It would take around six. As a powder it's one scoop in a glass of water, it's already dissolved when you drink it, and it becomes an evening drink instead of a handful of pills.
Most customers take it in the evening, 30 to 60 minutes before bed, because magnesium supports relaxation and sleep. If mornings suit you better, it works whenever you take it. One scoop in water, once a day.
One tub is two months at a scoop a day. Long enough to know whether you can feel the difference.
★★★★★"It's one of those things that you don't know what you've got 'til it's gone! I was sleeping well and didn't notice my gym recovery was better until I ran out."
