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Rated 4.7 out of 5 from 190 reviews 190 verified reviews

Cardiovascular support

Nitric Oxide

A six-ingredient formula that supports healthy blood pressure and circulation, every dose at a therapeutic level.

  • Blood Pressure
  • Circulation
  • Heart Health

Size: 60 Servings

Flavour: Peach Mango

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The easy way to never run out, delivered on your schedule.

  • Save $13.50 every delivery, not just your first
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Deliver 1 tub every

$76.49

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  • Third-party lab tested
  • Heavy-metal screened
  • GMP-certified facility
  • Naturally sweetened

Support for your whole cardiovascular system.

Nitric oxide is what lets your blood vessels relax and widen. Support how your body makes it, and you support the system that depends on it.

  • Circulation and blood flow

    Supports steady blood flow to the muscles, the hands and feet, and everywhere else it needs to reach.

  • Cardiovascular support

    Taurine, hawthorn and vitamin D support the heart muscle and the vessels around it.

  • Steadier energy

    Better circulation moves oxygen and nutrients more efficiently, which supports day-to-day energy.

  • Two precursors, not one

    Citrulline raises the baseline your body works from, arginine produces on demand. Running both is what keeps nitric oxide steady through the day rather than spiking and fading.

Inside every scoop

6 actives

Therapeutic doses, every serve

Six ingredients. One cardiovascular pathway.

Each one supports a different part of how your body makes and uses nitric oxide, dosed at a level that actually does the job.

  • 2000 mg

    L-Citrulline Malate 2:1

    The primary nitric oxide precursor. It converts to arginine, then to nitric oxide, driving sustained production through the day. The malate supports cellular energy.

  • 1000 mg

    L-Arginine

    A direct nitric oxide precursor. Stacked with citrulline, the two work in tandem: citrulline raises the baseline, arginine produces nitric oxide on demand.

  • 500 mg

    Taurine

    Supports the heart muscle's ability to contract efficiently, and helps regulate the electrolyte balance behind a healthy heart rhythm.

  • 500 mg

    Hawthorn Berry Extract

    Used as a cardiovascular remedy for centuries. Its antioxidants aid nitric oxide production and act directly as a vasodilator, helping vessels relax and widen.

  • 300 mg

    Vitamin C

    Protects nitric oxide from oxidising too quickly, keeping more of it active in the bloodstream where it supports vasodilation.

  • 200 IU

    Vitamin D

    Enhances nitric oxide production in the vessel lining, the layer most directly involved in blood pressure. Deficiency is increasingly common in NZ.

Six actives at therapeutic dosesOne scoop, twice a day

Supplement Facts

Serving size: 1 scoop (6.5g) · Servings per container: 60 Amount per serving

  • L-Citrulline Malate 2:1 2000 mg
  • L-Arginine 1000 mg
  • Taurine 500 mg
  • Hawthorn Berry Extract 500 mg
  • Vitamin C 300 mg
  • Vitamin D 200 IU

Other ingredients: stevia leaf extract, inulin, citric acid, silicon dioxide, natural flavours, calcium silicate, annatto seed powder (for colour).

Complete transparency

Nothing hidden. Every dose on the label.

No proprietary blends, no hidden amounts. Every ingredient and its dose is printed in full.

Naturally sweetened with stevia. No artificial sweeteners, no synthetic flavours, no fillers.

Made properly. Produced in a GMP-certified facility and third-party lab tested every batch, for purity and potency.

  • Vegan friendly
  • Naturally sweetened
  • No fillers
  • Third-party tested
  • Heavy-metal screened
Check it yourself. View the full Certificate of Analysis for the latest batch.
View COA (opens in a new window)

Certificate of Analysis

Twice a day. Once you're in the rhythm, it's easy.

  1. One scoop, morning Mix a 6.5g scoop into 200ml of water, before a meal.
  2. One scoop, evening Same again later in the day. Two smaller doses keep nitric oxide steady, rather than one spike that fades.
  3. Every day Consistency is what supports steady blood pressure and circulation over time.

60 servings per tub is a 30-day supply at twice-daily dosing. Take before meals, or before exercise.

What to expect

  • Week 2 to 4 Steadier energy and better circulation.
  • Week 4 to 8 Research suggests this is the window for measurable blood pressure changes.
  • Ongoing Consistent, twice-daily use is what keeps nitric oxide availability steady.

The Circulation Support Protocol

Nitric oxide tells the vessel to relax. Magnesium is on the same job from the other side.

A full therapeutic dose of the mineral that does it, and a wider cardiovascular role besides.

Read the reasoning
  • Nitric Oxide
    Nitric Oxide
  • Magnesium
    Magnesium

$159.98 $144.00 Both together, save $15.98

72% reorder within 90 days, the highest across our range

What customers say

Customer Reviews

Overall rating: 4.7 / 5 from 190 reviews.

Customer photo review of Nitric Oxide

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.

Nitric Oxide

Customer photo review of Nitric Oxide

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.

Nitric Oxide

Customer photo review of Nitric Oxide

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!

Nitric Oxide

Customer photo review of Nitric Oxide

Perfect start to my day…great flavour and definitely an improvement showing in my blood pressure levels!

Nitric Oxide

Customer photo review of Nitric Oxide

Onto my first jar and already have a back up ready to go. Tastes delicious . Even bought a new bottle to use .

Nitric Oxide

Customer photo review of Nitric Oxide

My husband is slowly reducing his blood pressure medication by using Nitric Oxide. Blood pressure is finally reducing

Nitric Oxide

Customer photo review of Nitric Oxide

I have this in the morning. Great tasting and refreshing. Great start to the day

Nitric Oxide

Customer photo review of Nitric Oxide

I can see a great change in my daily routine after start using nitric oxide every day in the morning feeling fresh and do my day to day work with out any tiredness ,I strongly recommend it.

Nitric Oxide

Customer photo review of Nitric Oxide

Absolutely love this stuff! Keeps my blood pressure in check. I don't need prescribed medication at the moment which I'm most grateful for, as it made me feel dreadful. This makes me feel great!

Nitric Oxide

Customer photo review of Nitric Oxide

I sort of decided to try this product on a whim but very pleased that I did. My Optometrist, at my recent annual checkup, was very pleased to inform me that the pressure in my eyes has decreased markedly where it had been increasing year on year prior to using Nitric Oxide. My BP is also stable at a normal level now too. I am now a repeat and regular customer of Nitric Oxide.

Nitric Oxide

Customer photo review of Nitric Oxide

So good, a changing to a subscription. Tastes wonderful.

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Customer photo review of Nitric Oxide

Taste good and not hard to drink

Nitric Oxide

Customer photo review of Nitric Oxide

We love nitric oxide 1st thing in the morning.😃

Nitric Oxide

Customer photo review of Nitric Oxide

Seems to be helping keep my blood pressure in check👍

Nitric Oxide

Customer photo review of Nitric Oxide

Great taste, good decision to buy

Nitric Oxide

Customer photo review of Nitric Oxide

The BP results speak volumes

Nitric Oxide

Customer photo review of Nitric Oxide

I really like he flavour it’s so easy to drink

Nitric Oxide

Customer photo review of Nitric Oxide

My second purchase thus far. Im loving this stuff, tastes good and helps replenish my body of all the good stuff I need.

Nitric Oxide

Customer photo review of Nitric Oxide

This product lifts you up and seems to have a positive effect on your B/P and general well being. However it must be used in conjunction with the normal sidekicks of exercise and awareness of diet. It is no "Magic Bullet" alone, but it does help.

Nitric Oxide

Customer photo review of Nitric Oxide

Great taste! Refreshing, hydrating and energising in the morning! Brilliant , well researched product.

Nitric Oxide

Customer photo review of Nitric Oxide

I use both the Nitric Oxide and the Magnesium! At 73 years of age, I need the heart, blood, and muscle support the these products bring. I still work hard physically, and I can really tell the difference since I’ve been using them! Thanks for providing such a great product!! Steve - Russell, New Zealand

Nitric Oxide

Customer photo review of Nitric Oxide

This is such a great product, since I have been taking it I have a lot more energy when I am working out, and day to day chores. I also love the Sleep formula too! Thanks Biosphere

Nitric Oxide

Customer photo review of Nitric Oxide

Love the taste and it’s really helped bring down my BP

Nitric Oxide

Customer photo review of Nitric Oxide

Using the magnesium and nitric oxide for a couple of years now after my nutritionist introduced me to the produce. My blood pressure well under control.

Nitric Oxide

Customer photo review of Nitric Oxide

This product works well, love it.

Nitric Oxide

Customer photo review of Nitric Oxide

Great taste, so refreshing and great for sleep

Nitric Oxide

Customer video review of Nitric Oxide

Very good. Buying more

Nitric Oxide

Customer photo review of Nitric Oxide

It really helps normalising my blood pressure, and easy to drink

Nitric Oxide

Customer photo review of Nitric Oxide

It keeps my blood pressure in check

Nitric Oxide

Customer photo review of Nitric Oxide

Tasty drink - I find it a refreshing way to start the day

Nitric Oxide

Customer photo review of Nitric Oxide

I use this product on a daily basis to promote vascularization and combine it with marine collagen, and rapeseed oil (1/2 tbs). It's a good early morning routine and in the evenings I often combine it with flavoured magnesium powder.

Nitric Oxide

Customer photo review of Nitric Oxide

Great product ..And yes it works 100% Very happy ,Will keep buying this..

Nitric Oxide

Customer photo review of Nitric Oxide

Been taking Nitric Oxide for 5 months and what an improvement in my exercise tolerance! I’m hooked!

Nitric Oxide

Customer photo review of Nitric Oxide

Feel healthier all round using this product, I'm an mma athlete and I feel like this gives me an edge.

Nitric Oxide

Customer photo review of Nitric Oxide

Love my morning glass of cold Nitric Oxide...Sets me up for the day..Thanks Team Biosphere..

Nitric Oxide

Customer photo review of Nitric Oxide

These products have been an important part of my health journey of weight loss, high blood pressure... Thanks...

Nitric Oxide

Customer photo review of Nitric Oxide

Such a good supplement! Have been using for a few months and definitely feel the difference in my training. Helps deliver intense pumps!

Nitric Oxide

Customer photo review of Nitric Oxide

I like both these products. Especially the Magnesium

Nitric Oxide

Questions, answered honestly

Everything you need to feel confident before you try it.

How fast will I notice a difference?

Steadier energy and better circulation usually take 2 to 4 weeks of consistent use. Blood pressure changes typically take longer: research suggests 4 to 8 weeks for measurable improvements. Like all supplements, it works best when taken consistently as directed, twice daily, before meals.

Can I take this with my blood pressure medication?

If you are on prescribed blood pressure medication, please consult your GP before adding any supplement to your routine. 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.

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 cardiovascular system 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 are comfortable taking it as part of their ongoing daily routine.

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.

How does the 60-day money-back guarantee work?

Take it for up to 60 days. If you are not feeling steadier energy, better circulation, or better blood pressure readings, email us and we will refund your order. No need to return the tub, with next-day Auckland dispatch on every order.

Individual results may vary. These statements have not been evaluated by Medsafe. This product is not intended to diagnose, treat, cure, or prevent any disease.

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