6 Reasons You're Flat by 3pm, no matter how much water you drink.
You're doing the right things. But the flat afternoons and the 2am calf cramps usually trace back to the same boring gap: minerals going out all day, and nothing coming back in.
One scoop, once a day
30 serves per tub
No sugar · monk fruit sweetened
Caffeine free
Third-party tested
01
Water Without Electrolytes Mostly Passes Straight Through.
Your body doesn't absorb water on volume alone. It needs sodium and other electrolytes to pull that water into your cells and keep it there. Drink litre after litre without them and most of it runs through, taking more minerals with it on the way out. That's how you can be "good with water" and still have dry lips by lunchtime.
02
Your Coffee Arrives
Before Your Water Does.
Two flat whites down before you've had a proper glass of water? Every cup nudges more fluid out than you'd think, so most mornings you're starting the day already behind. Nothing wrong with the coffee. It just needs minerals coming in behind it.
03
The Class and the Sauna
Take More Than Water Out.
A decent session sweats out sodium and potassium along with the water, and fifteen minutes in the sauna pulls out as much again. A shower and a sip at the fountain don't put any of it back. If you sweat on purpose most weeks, you're depleting on purpose too.
04
You're Losing Fluid All Night.
Night sweats and hot flushes drain you while you sleep, sometimes for hours at a stretch. If that's your season of life, you're waking up already down on fluid and minerals, which is why the headache is there before the day even starts. The morning glass of water helps. The minerals in it help more.
05
The 2am Calf Cramp Is a
Shortage, Not a Mystery.
Your muscles fire on sodium and potassium, with magnesium helping them switch off again. Run those low through an ordinary sweaty day, and a calf is liable to lock up right when you've finally fallen asleep. Cramps love a depleted system.
06
The Usual Fixes Were
Never Built for This.
More plain water just runs through you. The neon sports drinks are sugar and colouring built for teenagers on a rugby field, and pharmacy sachets are dosed for gastro (they taste like it, too). None of them were designed for everyday depletion. So we built Hydrate for exactly that.
Biosphere Hydrate
- Real electrolyte doses, not a token amount
- Water that finally stays put, not running straight through you
- No sugar, no caffeine, sweetened with monk fruit
- Third-party tested, made in a GMP-certified facility
What buyers say.
Every Hydrate review, straight from the feed.
Customer Reviews
Overall rating: 4.8 / 5 from 1620 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 :)
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
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
I have found this the only product, after many years of finding something to help my sleep. My sleep for past 13 years been erratic due to menopause and hectic life. I have used this for a month now with only a couple of bad nights sleep. I sleep through until 5.00am. Hallelujah. Thank you Biosphere. Great product. Also just started using your hydrate supplement. I'll see how that goes over next month too.
I've been forgetting to wear my prescription glasses, it's been 3 months. My hair is a little darker, my nails are stronger and my skin has a summery glow. Hoping for some relief to my joints....
Easy to take and Good value for money!
The longer I take these the better I have been feeling
I started using astaxanthin on 13 May 2026. I live with chronic inflammation that often leads to headaches and migraines, and since beginning the supplement I’ve noticed a meaningful shift. My baseline inflammation feels lower, and the frequency and intensity of my headaches and migraines have reduced. Another unexpected change has been with my eye floaters. They used to be a daily nuisance, but over the past weeks they’ve improved noticeably. This is simply my personal experience and not a medical conclusion. Yet the changes have been significant enough for me to share.
Why Hydrate, when everyone suddenly sells electrolytes.
Fair question. Hydration is having its moment, and half the supplement aisle has a new tub out. Here's what's different about this one, specifically.
| HYDRATE | SPORTS DRINKS | IMPORTED SALT POWDERS | |
|---|---|---|---|
| Sodium per serve | 500mg: enough to do the job |
A sprinkle, buried in sugar |
1000mg+, tastes like the ocean |
| Sugar | None. Monk fruit does the sweetening |
The main ingredient |
Usually none |
| Beyond the two salts | Taurine 500mg, coconut water, ionic trace minerals |
No |
Rarely |
| Built for | Everyday depletion, one scoop a day |
Teenagers on a sports field |
Fasting and keto protocols |
Full label, full doses
What's in every scoop.
Every dose printed in full. Nothing hidden in a "proprietary blend".
The mineral that lets the water you drink absorb instead of pass through. 500mg is enough to do the job without turning your bottle into seawater.
Works opposite sodium to move fluid into your cells. It's the one your muscles miss most when a calf locks up at 2am.
The ingredient energy drinks built their name on, without the caffeine and sugar they wrap it in. Taurine helps regulate fluid balance inside your cells and supports muscle function.
Nature's original electrolyte drink, concentrated. Adds naturally occurring potassium and rounds out the flavour.
A steady daily top-up for muscle and nerve function. Already take our full Magnesium?. This adds to it, it doesn't replace it.
A complex of naturally occurring trace minerals in ionic form, the form your body recognises. The small stuff modern food barely supplies.
Quick answers.
How soon will I notice anything?
If nighttime cramps are your main issue, that's often what people notice first. For steadier afternoons, give it a couple of weeks of daily use before you judge it. This is topping up a shortfall, not a stimulant, so it works by filling the tank rather than spiking you.
When and how do I take it?
One scoop in your first bottle of water for the day. That's the whole habit. Warm day, sauna, or a sweaty class? Have it then too. There's no wrong time and nothing to schedule it around.
Is there any sugar or caffeine?
Neither. It's sweetened with monk fruit, and there's nothing stimulant in the tub, so an afternoon scoop won't touch your sleep.
I watch my blood pressure. Is the sodium an issue?
Sodium is the point of an electrolyte, so yes, Hydrate carries a real dose of it. That's what pulls water into your system instead of letting it run straight through. If you're managing your blood pressure or taking medication for it, run it past your doctor or pharmacist first. They know your full picture, and the exact amount is printed on the label.
Can I take it if I'm pregnant, breastfeeding or on medication?
Check with your doctor or pharmacist first. They know your history and what else you've got on board. It's a simple electrolyte formula with nothing exotic in it, but they're the right people to confirm it fits your situation.
What if it doesn't work for me?
You've got 60 days. Take it daily, and if you're not glad you did, email us for a full refund. No need to post the tub back.
Make the water you already drink count.
You don't need another rule to follow. One scoop in tomorrow's first bottle, and let the afternoons tell you the rest.
- $47.99 for one tub
- 60-day money-back guarantee
- Next-day NZ dispatch
