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
Why Your Joints Still Ache
(even with supplements)
You used to get up and go. Now you get up, wait for your knees to cooperate, and then go. Slowly.
The morning stiffness. The ache after gardening.
The walks you cut short because something flares up.
You're not old. But your joints are telling a different story.
You've tried things. Glucosamine. Fish oil. Maybe turmeric.
And your joints still ache.
Those supplements aren't bad. They target cartilage cushioning and lubrication, and for some people that helps.
But if inflammation is driving your stiffness, cushioning alone won't solve it.
Here's what's often happening beneath the surface. Free radicals build up in your joints over time. This triggers chronic, low-grade inflammation. It's the mechanism recent research links to the pain, stiffness, and loss of function in osteoarthritis.
Glucosamine doesn't address that. Fish oil helps modestly.
Turmeric has absorption problems that limit how much actually reaches your joints.
There's a different approach.
It's called astaxanthin.
You've probably never heard of it.
But you've seen it your whole life.
It's the molecule that makes salmon pink and flamingos red. It comes from microalgae, the tiny organisms at the base of the marine food chain.
In wild salmon, astaxanthin is what protects their muscles during the gruelling upstream swim to spawn. Without it, they wouldn't survive the journey.
It's one of the most powerful protective molecules in nature.
And for the last twenty years, millions of people across Japan have been taking it daily. It targets the same kind of oxidative damage that drives chronic joint inflammation.
It's been studied in clinical trials on real patients with real joint pain.
And the results are significant.
Why This Antioxidant Is Different From Anything In Your Medicine Cabinet
REASON 1
Clinically shown to reduce joint pain and stiffness in 8 weeks.
REASON 1
Clinically shown to reduce joint pain and stiffness in 8 weeks.
In a randomised, double-blind, placebo-controlled trial, 71 adults with knee osteoarthritis took either astaxanthin or a placebo for 8 weeks.
The astaxanthin group improved significantly. Pain scores dropped. Physical function scores improved. And two key markers of inflammation in their blood both reduced.
The placebo group? No significant change.
Second trial in rheumatoid arthritis patients confirmed consistent results.
A separate trial confirmed the pattern in a different type of joint condition. 60 patients with rheumatoid arthritis took astaxanthin for 8 weeks. Disease activity scores and inflammatory markers both improved significantly compared to placebo.
Two clinical trials. Two different joint conditions. Consistent results.
The knee OA trial used 12mg per day.
The exact dose in every Biosphere bottle.
Tabassum et al. (2025). 71 adults, 12mg/day, 8 weeks, knee OA. Grigorian et al. (2025). 60 patients, 20mg/day, 8 weeks, rheumatoid arthritis. Both randomised, double-blind, placebo-controlled.
Second trial in rheumatoid arthritis patients confirmed consistent results.
REASON 2
6,000 times more powerful than vitamin C at fighting oxidative damage.
REASON 2
6,000 times more powerful than vitamin C at fighting oxidative damage.
Inflammation starts with oxidative stress. Free radicals accumulate in your joints, triggering the chronic low-grade inflammation behind stiffness and pain.
ANTIOXIDANT POTENCY INDEX
Relative free-radical
Astaxanthin is the single most powerful antioxidant ever measured. Published research puts its free-radical neutralising ability at 6,000 times vitamin C, 550 times vitamin E, and 800 times CoQ10.
Astaxanthin is the single most powerful antioxidant ever measured. Published research puts its free-radical neutralising ability at 6,000 times vitamin C, 550 times vitamin E, and 800 times CoQ10.
Most antioxidants become harmful at high doses. They flip into pro-oxidants and create more damage. Astaxanthin never does this. It stays protective regardless of concentration.
This is the mechanism that makes the clinical results possible. Not cartilage cushioning. Not lubrication. Direct reduction of the oxidative damage driving your joint inflammation.
ANTIOXIDANT POTENCY INDEX
Relative free-radical
Vitamin C
1x
Vitamin E
550x
CoQ10
800x
Astaxanthin
6,000x
The most powerful antioxidant ever measured
Based on published antioxidant potency measurements in peer-reviewed research.
REASON 3
Your body actually absorbs it, and it reaches your joints.
REASON 3
Your body actually absorbs it, and it reaches your joints.
Turmeric’s biggest problem isn’t potency. It’s absorption. Most curcumin passes straight through your digestive system. The same applies to many antioxidant supplements. Fat-soluble compounds delivered without the right carrier simply don’t reach your bloodstream.
Every Biosphere softgel includes a specialised phospholipid and olive oil complex. Published research shows this type of formulation enhances absorption of fat-soluble antioxidants by up to 12 times compared to standard delivery.
The difference between a supplement that sits in your gut and one that actually reaches your joints, eyes, and skin.
Based on published research on phospholipid-enhanced carotenoid absorption.
Based on published research on phospholipid-enhanced carotenoid absorption
REASON 4
Your joints feel it first, but your whole body benefits.
When you take astaxanthin for joint comfort, it doesn’t stop there.
Published research covers skin hydration and elasticity, eye health and reduced screen fatigue, and cardiovascular support. A comprehensive review of astaxanthin’s effects across multiple organ systems concluded it offers broad protective benefits. From brain to heart to skin.
When you take astaxanthin for joint comfort, it doesn’t stop there.
Published research covers skin hydration and elasticity, eye health and reduced screen fatigue, and cardiovascular support. A comprehensive review of astaxanthin’s effects across multiple organ systems concluded it offers broad protective benefits. From brain to heart to skin.
One supplement. Two softgels with breakfast. Whole-body protection.
Alugoju et al. (2022). Critical Reviews in Food Science and Nutrition. Comprehensive review of astaxanthin’s multi-organ health effects.
REASON 5
REASON 5
If it doesn’t work, you don’t pay
60-day money-back guarantee
No fine print. No hoops. Take it for two months.
If your joints don’t feel different, we refund every cent.
Biosphere has sold astaxanthin in New Zealand since 2016. We’re in 150+ stores nationwide. 273 verified reviews at 4.8/5. We can offer this guarantee because the product works.
60-day money-back guarantee
Third-party tested
GMP certified
+150 NZ stockists
What Customers Are Saying
Customer Reviews
Overall rating: 4.8 / 5 from 1677 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 :)
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.
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.
What's Inside Every Softgel
Free from gluten, dairy, yeast, corn, sugar, preservatives, and colours. Contains soy.
Astaxanthin6MG PER SOFTGEL (12MG DAILY DOSE)
From red microalgae. CO₂ extracted, no solvents. The most researched natural antioxidant for joint health. Above all published study doses.
Phosphatidylcholine10MG PER SOFTGEL
Enhances astaxanthin absorption. Also supports healthy nerve cell function.
Olive Oil
Astaxanthin is fat-soluble — it needs healthy fat to reach your joints. The delivery vehicle matters.
Vitamin E10MG PER SOFTGEL
Stabilises the formula and provides additional antioxidant support.
Other Ingredients
Encapsulating aids. Softgel shell contains gelatin.
Free from gluten, dairy, yeast, corn, sugar, preservatives, and colours. Contains soy.
How to Take It
Take 2 softgels daily with breakfast or any meal containing fat. That's it.
What to Expect
Weeks 1–2
Astaxanthin begins accumulating in your system. Some customers report reduced stiffness and improved energy early.
Weeks 1–2
Astaxanthin begins accumulating in your system. Some customers report reduced stiffness and improved energy early.
This is where the clinical trial measured significant improvement. Reduced pain, better function, lower inflammation markers.
Weeks 4-8
Weeks 4-8
This is where the clinical trial measured significant improvement. Reduced pain, better function, lower inflammation markers.
Ongoing
Benefits are cumulative. Consistent daily use provides lasting support for your joints, skin, eyes, and cardiovascular health.
Ongoing
Benefits are cumulative. Consistent daily use provides lasting support for your joints, skin, eyes, and cardiovascular health.
Every batch third-party tested
Solvent-free CO₂ extraction
GMP certified
60-day money-back guarantee
Give Your Joints the Protection They've Been Missing
- 12mg astaxanthin daily
- Enhanced absorption formula
- GMP certified · Third-party tested
GET 20% OFF YOUR FIRST BOTTLE
$44.99 NZD
$36.00 NZD
"After taking Astaxanthin for 4 weeks 12mg per day the pain in my right shoulder disappeared and my skin moisture and smoothness improved remarkably.""
"I use Astax regularly and really feel like inflammation is reduced and my overall body is lighter and more mobile.""
60-day money-back guarantee
Next-day Auckland dispatch
Frequently Asked Questions
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Clinical studies showed significant improvement in eye strain and focusing ability within 4 weeks. Some customers report less dryness in the first 1–2 weeks.
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60-day money-back guarantee. Email us for a full refund. No questions, no hassle.
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Clinical studies used 4–9mg. At two softgels daily, you’re getting 12mg — above every published study dose. More isn’t always better, but being above the therapeutic threshold matters.
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A naturally occurring antioxidant from microalgae — it’s what gives salmon their pink colour. Published research ranks it among the most powerful antioxidants ever measured.
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Most Kiwis haven’t — yet. Astaxanthin has been mainstream across Asia for decades. Japan alone accounts for 25% of the global market. It’s newer to NZ but growing fast.
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Yes. Astaxanthin is well tolerated and safe to combine with most supplements. If you’re on blood-thinning medication, check with your doctor first.
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Astaxanthin extracted from microalgae using solvent-free CO₂ process. Every batch independently third-party tested. Manufactured in a GMP-certified facility in West Auckland.
Remember What It Felt Like to Just Get Up and Go?
No morning stiffness negotiation. No cutting walks short. No avoiding the stairs.
Astaxanthin works through a different mechanism than anything in your medicine cabinet. Backed by two randomised, placebo-controlled trials in patients with joint conditions, using doses at or above what's in every Biosphere bottle. Trusted across Japan for twenty years. Sold in New Zealand since 2016.
Try it for 60 days. If your joints don't feel different, you pay nothing.
60-day money-back guarantee
Third-party tested
GMP certified
273 verified reviews