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
Something has shifted in the last few years. It's not what you think it is.
A piece on why your hands are colder, your stairs are higher, and your afternoons are heavier than they used to be. And the one molecule that connects all of it.
A quiet morning. The kind where you notice things you didn't used to notice.
It started small. The stairs felt a little harder one morning. You put it down to a bad sleep. Your hands got cold at dinner and didn't warm up until bed. The afternoon energy that used to carry you to seven now collapses at three.
None of it is dramatic. You're not sick. You feel mostly fine. The doctor says everything's within range. Your bloodwork is normal. You walk, you eat reasonably well, you take your vitamins.
But you don't feel like yourself.
You feel like a version of yourself that's running on slightly less of something. You can't name what. And you've started to suspect that no amount of green smoothies or extra sleep is going to bring it back.
This is a piece about what that something is.
THE THING NOBODY MENTIONED
There's one underlying mechanism that explains most of it.
It has nothing to do with how much sleep you're getting, how much water you're drinking, or whether you remembered your multivitamin this morning.
It's a molecule. Your body has been making less of it every year of your adult life. By the time you reach your 50s, production can be around half of what it was at 25.
It's called nitric oxide. And you've almost certainly never heard your GP mention it.
WHAT THE MOLECULE DOES
It controls how much blood reaches every part of you.
The inside of your blood vessels produces nitric oxide minute by minute, in response to what your body is doing. Its job is simple: tell the vessels to relax and widen so blood moves through with less resistance.
When there's enough of it, blood reaches every part of you. Your fingertips. Your scalp. The part of your brain that needs to focus through a 4pm meeting. The muscles you just asked to walk up a flight of stairs.
When there isn't, blood flow slows. The first places to feel it are the ones furthest from your heart, and the ones that need oxygen most.
The first place you notice it is somewhere you used to not notice anything at all.
WHY YOU FEEL THE WAY YOU FEEL
Four small things you've started to notice. One mechanism behind all of them.
If you recognise yourself in any of these, you're not imagining it. You're noticing real changes that come from the same place.
Cold hands and feet that stay cold.
PERIPHERAL CIRCULATION
The vessels furthest from your heart are the first to feel reduced flow. Even in a warm room, after a warm drink, your fingers and toes don't warm up the way they used to.
The afternoon fog that won't lift.
CEREBRAL CIRCULATION
Your brain runs on roughly 20% of your body's oxygen. When circulation slows, focus and mental clarity are among the first things to soften. The hours between two and five are when most people notice it most.
Stairs that feel higher than they used to.
VESSEL STIFFNESS
Your heart is doing the same work it always did, but against vessels that have lost some of their flexibility. More effort for the same flight. Out of breath at the top where you didn't used to be.
Recovery that takes longer.
MUSCLE OXYGEN DELIVERY
A long walk, an afternoon in the garden, a flight of stairs with shopping bags. The recovery between any of these used to be fast. Now it lingers. Your muscles need oxygen to refresh, and oxygen needs blood to arrive.
THE SCIENCE IS SETTLED
In 1998, the Nobel Prize in Physiology or Medicine was awarded for discoveries about nitric oxide and how it controls the cardiovascular system.
The discovery applies to every vessel in your body, not just the ones around your heart. Decades of research since then have identified the building blocks your body uses to produce it, and what changes when you give them at the right doses.
The Nobel committee called nitric oxide "a completely new principle for signalling in biological systems."
WHAT CHANGES WHEN YOU GIVE IT THE INPUTS
Most of this isn't a fix. It's a return.
You stop noticing the cold hands at dinner because they're not cold anymore. You stop bracing yourself before the stairs because the stairs don't feel like stairs. The 3pm slump becomes 3pm, just another point in the day.
Nothing about you has been replaced. You're not running on a stimulant. You're not relying on a hormone. You've given your body the raw materials it used to produce on its own, and your circulatory system has done the rest of the work.
This is what we built for it.
BIOSPHERE NITRIC OXIDE
The inputs your body stopped making enough of. Back in the system.
Two minutes a day. The rest is your body's work.
ONE MORE THING WORTH KNOWING.
The same molecule supports healthy blood pressure.
If someone in your life is managing high blood pressure, this is worth a mention. The nitric oxide that controls oxygen reaching your hands and your brain also controls how easily blood moves through your vessels. When NO production is supported, vessels relax. When vessels relax, the heart works against less resistance.
The research on L-citrulline as a vasodilator has been building for over a decade. If they're on prescribed medication, a quick word with their GP first is always the right call.
Two scoops a day. Same routine. A second reason to take it.
WHAT THIS LOOKS LIKE IN PRACTICE
Most cardiovascular changes happen quietly.
There's no dramatic moment. There's just a slow accumulation of small differences, until one day you realise the things that used to bother you have stopped bothering you.
01
Week 01
Nothing dramatic. You're mixing it morning and evening. The ingredients are getting to work before you can feel them.
03
Week 03
Something feels different. Your hands are warmer through the day. The afternoon dip isn't as deep. You make it through the supermarket without needing to sit.
06
Week 06
You realise you haven't thought about the 3pm slump in days. The flight of stairs at the office doesn't make you pause at the top. Your energy holds steadier through the afternoon.
12
Week 12
You feel like yourself again. Not the version at 25. The version from a few years ago. Before things started to slow down. The version that didn't have to think about any of this.
One tub contains 60 servings and lasts 30 days at two servings per day. Twelve weeks is 84 days, so it requires 168 servings — approximately three tubs. Individual results vary.
Week twelve. The point where you stop noticing the things you'd started to notice.
WHY THE PRICE IS WHAT IT IS
Clinical doses cost more. Here's what you'd pay buying them separately.
Most circulation supplements use trace amounts of one or two ingredients and rely on marketing to fill the gap. Sourcing all six at the doses research actually uses isn't cheap. Here's what those numbers look like.
Bought Separately
Six ingredients at clinical doses. One bottle each.
Bought Together
All six in one scoop. Twice daily. One tub.
Save $88+ vs sourcing individually
- Six ingredients, full clinical doses
- USA-sourced, FDA-regulated manufacturing
- Third-party tested every batch
- 60 servings, 30 days at twice-daily use
- Naturally flavoured peach mango
- One ritual, twice a day
Combined cost based on typical NZ retail pricing of single-ingredient supplements at equivalent doses. Indicative only.
BEHAVIOURAL PROOF
The strongest signal a supplement is doing something isn't a review.
It's a reorder.
72%
of Biosphere Nitric Oxide customers reorder within 90 days. People don't reorder a twice-daily product unless they're feeling the difference.
Customer Reviews
Overall rating: 4.8 / 5 from 1689 reviews.
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 :)
Easy and yum way to take magnesium...and can add other less palatable things to it as well
Amazing product, blood pressure dropped from 178 to 141 after one month of use.
First 'dissolve in water' supplement I've had that wasn't sickly sweet! Nice subtle flavour, little bit of natural tasting sweetness. Perfect!
Great tasting product will order again
Great tasting magnesium, taken an hour after dinner for a restorative sleep. Highly recommend, easy to drink mango/pineapple os delicious!
Tastes nice & works well.
I actually love the flavour! I have noticed an increase in energy levels. Highly recommend.
Great taste, but more importantly noticeably helps me with consistent sleep, migraine reduction and to reduce cramp in legs and feet at night.
I’m loving this quality magnesium product from BioSphere as it has transformed the quality of my sleep.
I was sceptical but desperate when I started using Gut Support. After the first month, there hadn’t been a huge change, but I decided I was going to give it 2 months. Only a week into the second tub I noticed a definite change, and after not quite 2 months my system is so much calmer and more regular - the best it has been in nearly 6 years.
Nerve pain gone , deep sleeps after taking this . ! I am about to reorder , thanks guys 😍
This has been a game changer for me . It has eased pain and cramping at night . It promotes a feeling if calm and relaxation . I will never stop using this . Please buy it . I promise you won’t be sorry . Carolyn
Just love this product. I am on my third tin. I have been able to halve my blood pressure medication.
Sleep so much better and no more cramps
I won't need to ask for my money back. It works! The quality of my sleep has improved 10 fold.
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 love this product. I noticed an improvement in my skin. Looks and feels so much smoother.
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.
SAVE 20% - FIRST ORDER
4.7/5 from 201 verified reviews
Biosphere Nitric Oxide
$72.00$89.99SAVE $17.99
About $2.40 per day. NZD.
- Six clinically dosed ingredients to support nitric oxide production
- USA-sourced raw materials. GMP-certified, FDA-regulated facility. Third-party tested every batch.
- Naturally flavoured peach mango. No fillers, no artificial sweeteners.
- Designed for cardiovascular support.
60-day money-back guarantee
Next-day Auckland dispatch
The only risk is not trying it.
Take it for 60 days. Morning and night, as directed. If you're not feeling warmer, sharper, or more like yourself, we refund every dollar. No questions. No hoops.
You keep the tub either way. Whether you finish it and order another, or finish it and ask for a refund, the tub is yours. We're not in the business of asking customers to repackage a half-empty supplement and ship it back. If the formula isn't doing what we say it does, that's on us, not on you.
Questions worth asking before you start.
How fast will I notice a difference?
Most people notice steadier energy and warmer hands and feet within 2 to 4 weeks of consistent use. Changes in circulation, recovery, and stamina typically build over 4 to 8 weeks. It works best when taken every day, before meals, both morning and evening.
Why two doses a day?
Nitric oxide doesn't stay in your body for long. One large daily dose creates a brief spike followed by hours of low levels. Two smaller doses, morning and evening, support steadier nitric oxide availability throughout the day. That's the level of support your circulation actually benefits from.
Is it safe to take long-term?
Yes. The ingredients are non-habit forming and well-researched for daily use. 72% of our customers reorder within 90 days, which suggests they're comfortable taking it as part of their ongoing routine.
Can I take this with my medication?
If you're on any prescribed medication, especially for blood pressure or heart conditions, please consult your GP before adding any supplement. Many customers use Biosphere Nitric Oxide alongside their medications with medical supervision, but a quick conversation with your doctor first is always the right call.
How does it taste?
Naturally flavoured peach mango, sweetened with stevia. No artificial sweeteners, no synthetic flavours. Most customers describe it as pleasant enough to look forward to as a daily ritual.
Where does this ship from?
All Biosphere orders ship from our Auckland warehouse. Most orders dispatched the next business day, with delivery to most parts of New Zealand within 1 to 3 working days.
HERE'S WHAT YOU'RE GETTING
Everything you need. Nothing you don't.
$72.00was
$89.99SAVE $17.99
About $2.40 per day. NZD.
- 1 tub of Biosphere Nitric Oxide · 60 servings (30 days at twice-daily dosing)
- 20% off your first order, no code needed
- Next-day Auckland dispatch on every order
- 60-day money-back guarantee, no questions asked
