Why Your Joints Still Ache
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.
Why This Antioxidant Is Different From Anything In Your Medicine Cabinet
Clinically shown to reduce joint pain and stiffness in 8 weeks.
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.
6,000 times more powerful than vitamin C at fighting oxidative damage.
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
The most powerful antioxidant ever measured
Based on published antioxidant potency measurements in peer-reviewed research.
Your body actually absorbs it, and it reaches your joints.
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
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.
If it doesn’t work, you don’t pay
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. 215 verified reviews at 4.8/5. We can offer this guarantee because the product works.
What Customers Are Saying
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.
What's Inside Every Softgel
Free from gluten, dairy, yeast, corn, soy, sugar, preservatives, and colours.
From red microalgae. CO₂ extracted, no solvents. The most researched natural antioxidant for joint health. Above all published study doses.
Enhances astaxanthin absorption. Also supports healthy nerve cell function.
Astaxanthin is fat-soluble — it needs healthy fat to reach your joints. The delivery vehicle matters.
Stabilises the formula and provides additional antioxidant support.
Encapsulating aids. Softgel shell contains gelatin.
Free from gluten, dairy, yeast, corn, soy, sugar, preservatives, and colours.
How to Take It
Take 2 softgels daily with breakfast or any meal containing fat. That's it.
What to Expect
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
"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.""
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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Different target. Lutein accumulates in the macula (back of the eye) over 6–9 months. Astaxanthin deposits at the front of the eye where focus is controlled, and showed results in 4 weeks. They complement each other.
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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 eyes don't feel different, you pay nothing.