CX8 - Heart Health Support

30 Day Supply | 90 Capsules
$99.95 (Incl Tax)

A unique, highly advanced natural supplement formulated with a synergistic combination of clinically proven ingredients to support the cardiovascular system.

  • Heart and artery support from a cellular level
  • Calcium metabolism support
  • Healthy cholesterol balance

Free shipping on orders over $100. Find shipping details here

Key Benefits

Backed by Science

Superior Quality

Heart Health Support

High levels of calcium ions being deposited into tissues can affect a wide range of body tissues, including blood vessels, cartilage, and the heart's valves, making them harder and less flexible. Calcification in the arteries may increase the risk of heart disease, which is referred to as “the silent killer".

CX8 is formulated with highly researched ingredients backed by data to support calcium metabolism, circulation, and inflammation management. The eight potent ingredients formula offers you one of the most effective heart-health products available today.

Circulation and Calcification

Arteries play a fundamental role in maintaining proper blood circulation throughout the body, it is crucial to keep arteries in good condition to maintain good cardiovascular health. CX8 contains a proprietary blend of protease enzymes (Nattozimes®) and vitamin K2 in MK-7 form, these well-researched ingredients present great evidence to support calcium metabolism and may prevent the buildup of calcium in the arteries.

You may find there are several types of vitamin K2, and MK-7 (menaquinone-7) is often considered the best form of vitamin K2 for heart health, because of its superior bioavailability, effectiveness and ability to support arterial calcium regulation.

The MenaQ7® MK-7 vitamin K2 used in CX8 has been conducted in an overwhelming number of clinical trials, it’s micro-encapsulated which guarantees stability.

Inflammation and Cellular Support

Inflammation plays a complex role in heart and artery health. Excessive inflammation can damage the thin layer of cells in the inner blood vessel walls, affecting the ability to regulate blood vessel tone and blood flow. Chronic inflammation is also often associated with metabolic syndrome, contributing to high blood pressure and unbalanced cholesterol.

CX8 is formulated with a complex blend of active ingredients with potent anti-inflammatory properties to protect and support good heart health. It contains DeltaGold® tocotrienol complex, the most potent anti-inflammatory vitamin E, to help prevent lipid oxidation in CVD, and support cardiovascular and metabolic health. Combined with additional antioxidants sea buckthorn fruit extract (CardiOmegia™, CyanthOx™30), rutin and New Zealand blackcurrant extract, this unique heart health supplement is great for supporting healthy inflammation and good cardiovascular health.

Each serving of CX8 also offers 1000IU of vitamin D3, to help maintain healthy blood flow and protect the heart and blood vessels.

Supplement Facts

Serving size: 3 Capsules
Servings per container: 30
Amount Per Serving   % DV*
Calories 10  
Total Carbohydrate 1 g 1%
Vitamin D3
(as Cholecalciferol) (1000 IU)
25 mcg 125%
Vitamin K2
(as MenaQ7 PURE® as micro-encapsulated Menaquinone-7)
180 mcg 150%
CardiOmegia™ Sea Buckthorn Fruit Extract
Extract (14% Omega 7, 88 mg)
630 mg **
CyanthOx™30 Sea Buckthorn Fruit Extract
(30% Proanthocyanidins)
500 mg **
DeltaGold® Tocotrienol Complex
(30% Tocotrienols, 75 mg)
250 mg **
(from Japanese Sophora Bud)
100 mg **
Nattozimes® Protease
(providing 4,000 fibrinolytic units (FU))
115 mg **
Oxi-fend® Blackcurrant Fruit Extract
(20% Polyphenol, 10mg)
50 mg **

Other Ingredients: Capsule (Hydroxypropylmethyl Cellulose, Water), Maltodextrin, Starch.

If you are pregnant, lactating or taking any medications, please consult your health practitioner before starting new supplements.


Servings per bottle: 30
Daily serving: Adults - 3 capsules per day.

For optimal results take at least 1 hour before or after a meal.

Combines well with our Total Balance products and Omega 3 / QH Premium CoQ10.

If you are on Magnesium as well we CX8, we recommend you take them at separate times, to allow the best efficacy of vitamin K2 present in CX8. You can take CX8 in the morning to support energy and Magnesium at bedtime to help with sleep.

If you are pregnant, lactating or taking any medications, please consult your health practitioner before starting new supplements.

If you have any questions, please contact us at

Trusted Brand for 25 Years
Made in New Zealand
365 Days Guarantee


How long do I need to take CX8?

It should be part of your daily supplement regimen.

Can I take a part dose of CX8?

It is not desirable if you wish to get the full benefits of the product as the dose of each of the ingredients which have been shown to be effective in clinical studies are present in their optimal amount at the full dose.

What age is CX8 recommended from?

40+ although there can be instances in which it is desirable to start taking it at an earlier age. The ingredients in it are all beneficial for general overall health and there is no downside for any adult to take it at any age.

Can I take CX8 with prescription medications?

There should be no issues with taking them whilst taking medications. As usual, leave a gap of about three hours between taking supplements and medications. It is strongly advised to consult your doctor/health care practitioner to ensure that there are no possible negative interactions prior to starting this supplement.

Will CX8 benefit high blood pressure?

Any improvement in the flow of the blood through the arteries will have a beneficial effect on blood pressure so you could expect an improvement.

Will CX8 help with blood circulation?

This is one of the main objectives of CX8.

Will CX8 support healthy inflammation?

This is one of CX8's main objectives.

How long will it take to see benefits from CX8?

Depending upon your personal situation you may start feeling benefits within a couple of weeks, although most benefits are unseen and unfelt and require testing to see the changes.

Will CX8 help with cholesterol?

There is strong clinical data on several of the ingredients present supporting their efficacy in reducing the oxidation of cholesterol which is the main problem with cholesterol. Also, the data shows an increase in the good HDL cholesterol and a decrease in the bad LDL.

Will this supplement interfere with prescription medications?

All supplements should be taken 2-3 hours away from prescription medication. We recommend checking with your doctor before beginning any supplement.

Can I take other Xtendlife supplements alongside CX8?

Yes, you can. All our products are formulated to work synergistically with each other. Please see our FAQ regarding CX8 and Magnesium.

Can I take CX8 and Magnesium together?

We do not recommend that you take CX8 and Marine Magnesium with Potassium at the same time. This is because Magnesium may affect the efficacy of the Vitamin K2 ingredient which is present in CX8. Take CX8 in the morning if possible, as this increases your energy and then take the Magnesium at bedtime as it helps with sleep.

Why does CX8 cost so much?

The ingredients are extremely expensive. For example the form of Vit K Mk-7 is several times the cost of what we could source MK-7 from a Chinese manufacturer. The special Blackcurrant extract we are using is more than 10 times the cost of Blackcurrant powder. To try to find the equivalent of CX8 on the market would cost between US$200 - $300 for a 30 day supply. We have a special guarantee regarding the price.

How do I know if I need CX8?

You can never know for sure without doing a very extensive series of tests including a CAC scan (Coronary Artery Calcification). Unless your arteries are squeaky clean it is desirable that you take it.

What happens if I stop taking it?

You would continue to get benefit from it for some time after and then your system would continue to age and deteriorate as it would have if you had not started it in the first place. You would still be better off than if you hadn't taken it at all.

Can I take this if I have a diagnosed heart condition?

Absolutely. Make sure you keep your Doctor in the picture in case there are any issues with some medication.

Can I take this if I have stents?

Anything that helps blood flow and helps avoid a build up around the edges of a stent has to be helpful so the answer should be yes, but once again have your Doctor confirm this.

I have low blood pressure, should I take CX8?

CX8 is designed to help overall cardiovascular health and circulation so there is no downside in taking it if you have low blood pressure. Once again let your Doctor know if they have you on medication.

What causes calcification?

There are multiple causes ranging from lifestyle choices such as smoking, diets high in carbohydrates, diabetes and of course the biggest one…advancing age.

Are these vegan, gluten-free or vegetarian?


Can I take CX8 if I am pregnant or breastfeeding?

No, we do not recommend this. The only product we recommend during this time is our Omega 3/DHA fish oil, which has valuable properties to support both the health of the mother and baby. 
Fish oil is highly recommended by many medical professionals during pregnancy and breastfeeding to help support infant brain development, as well as systemic organ growth. It can also play a valuable role in supporting the post-natal mood and brain function of the mother. As the baby draws from the mother's precious stores of DHA, they can easily become depleted, therefore supporting levels with a supplement such as Omega 3/DHA fish oil is very wise.