Start here
WHERE DO I START? WHICH PRODUCT SUITS ME?
The most important thing is to look at your lifestyle. Do you eat healthily? Do you have a good sleep pattern? Do you experience a lot of stress? Do you move enough? Do you smoke? Do you have social connections? Those are the first questions to ask yourself. If you would like some extra support on top of that, Zirtui products can be a nice addition. Do you have a vitamin D deficiency? Then THE blend may be something for you. Do you have sleep challenges? Then THE dream could be a nice addition to your evening ritual. Look in a targeted way, and know that a quick fix does not exist.
WHO IS DR. ELLEN CRABBE?
Ellen Crabbe is the founder of Zirtui and holds a PhD in Molecular Biology. After losing close family members to cancer, she delved into the mechanisms behind disease, inflammation and ageing. She translated that knowledge into Zirtui. Want to know more? Read her book THE book.
IS ZIRTUI A MEDICINE?
No. Zirtui products are food supplements, not medicines. They do not replace a varied, balanced diet or a healthy lifestyle.
WHAT DO LONGEVITY AND HEALTHSPAN MEAN?
Longevity is about ageing healthily. Healthspan is the part of your life in which you are healthy. It is not about stopping the clock, but about living well for as long as possible. The aim is to die young as late as possible.
WHERE IS ZIRTUI MADE?
In Belgium.
WHAT IS THE DIFFERENCE BETWEEN THE BLENDS AND THE PERFORM RANGE?
THE perform is the base line of Zirtui: longevity basics that combine perfectly with the Zirtui blends, so that together you build an optimal longevity routine.
Under THE perform range we bring together high-quality, well-designed basic products, such as creatine, high-quality magnesium and plant-based omega 3, each with the scientific Zirtui stamp. Where the Zirtui blends respond specifically to particular longevity pillars, THE perform forms the foundation: nutrients whose role in energy, muscles, the nervous system, the brain and recovery is well substantiated.
HOW DO I STORE MY ZIRTUI PRODUCTS?
Cool and dry, with the pouch tightly closed. THE skin is best used within 30 days of opening.
I HAVE A QUESTION ABOUT LONGEVITY. CAN I ASK YOU?
Gladly! Send your question via the contact page.
THE brand & science
WHERE DOES THE NAME ZIRTUI COME FROM?
Zirtui is named after the sirtuins, a group of longevity proteins that play a central role in the regulation of cell mechanisms involved in ageing.
HOW LONG SHOULD I TAKE ZIRTUI TO SEE EFFECTS?
Zirtui requires a consistent intake over time to have an optimal effect. We advise taking Zirtui for at least three consecutive months. In addition, it is necessary to maintain a healthy lifestyle.
HOW ABOUT THE SCIENCE BEHIND THE PRODUCT? CAN THE HEALTH BENEFITS BE PROVEN?
Getting older is a privilege. How you age is partly in your own hands: through sleep, exercise, what you eat and the nutrients you give your cells every day.
Research into the biology of ageing has moved at a rapid pace over the last decade. Our Zirtui products are our answer to that curiosity: formulas built around well-characterised nutrients and plant extracts. Not all ingredients have health claims approved in the EU. We include them because of the science that fascinates us, not because we can promise you an effect. Better transparent than vague.
IS ZIRTUI SAFE?
Zirtui fully complies with EU regulations for food supplements and is made in Belgium. Our formulas only contain ingredients that are known to be safe and are approved at European level.
- THE blend: NUT number 4563/1
- THE dream: NUT number 4563/2
- THE skin: NUT number 4563/6
- THE carbX: NUT number 4563/8
- THE perform - creatine: NUT number 4563/5
- THE perform - magnesium: NUT number 4563/10
- THE perform - omega 3: NUT number 4563/9
WHY A POWDER AND NOT A PILL?
Many of our formulas are powder blends. This ensures that you get the right amount of active ingredients. One dose of a Zirtui formula often equals more than 10 pills a day.
WHEN SHOULD I START TAKING ZIRTUI?
You are never too young or too old to start a healthy lifestyle! Zirtui products can be a healthy addition to it. Check the age limit on the label of each product.
ARE THERE SPECIFIC DIETS FOR WHICH ZIRTUI IS NOT SUITABLE?
Where possible, our blends are vegan, GMO-free and gluten-free. For specific warnings, please check the label on the specific product pages. When in doubt, contact your doctor.
CAN I COMBINE DIFFERENT ZIRTUI PRODUCTS?
Yes you can! Check THE instructions on the specific product pages and build your Zirtui rituals.
We also have some interesting bundles, such as THE day & night and THE meno+ kit.
If you combine THE dream and THE perform - magnesium, keep an eye on the total daily dose.
THE blend
HOW SHOULD I TAKE THE blend?
THE blend is easy to fit into your daily life. A pouch contains 30 portions, enough for one month. Take one scoop of THE blend once a day, preferably with your first meal. Our advice? Add it to your first glass of water, juice or shake. You can also mix it with your yoghurt or granola.
We recommend taking THE blend in the morning because of the high dosage of vitamin D. As we specifically chose not to add any additives, you may have to stir it a bit more thoroughly than other blends. Use our Zirtui shaker or our Zirtui mixer!
WHY IS THE blend GREEN?
The greenish colour of THE blend comes, among other things, from the broccoli sprouts, a source of sulforaphane.
HOW DOES THE blend TASTE?
THE blend is a mix of very specific natural ingredients. We specifically chose not to use any additives that could interfere with Zirtui's core values. This means that we also did not use any taste-masking additives. THE blend looks 'green' and tastes 'green'. If you don't like the taste of THE blend, mix it with a little juice, some (plant-based) milk, a protein shake or a smoothie.
THE dream
WHEN SHOULD I TAKE THE dream?
THE dream is your evening ritual. Prepare your (warm) cup of cocoa 30 to 60 minutes before you go to sleep.
HOW SHOULD I TAKE THE dream?
Add one scoop of THE dream to (warm) water or (plant-based) milk of your choice and mix well. Use our Zirtui mixer for the best result. Want it a little sweeter? Add some honey or a sweetener of your choice. You can drink THE dream either cold or warm.
HOW DOES THE dream TASTE?
THE dream has a base of coconut milk and water, with cocoa. We added a little natural sweetener derived from stevia, but if you want it sweeter, feel free to add a sweetener of your choice.
WILL THE dream MAKE ME DROWSY THE DAY AFTER?
No, THE dream is not a sleeping pill.
IS THE dream ADDICTIVE?
Maybe you will become addicted to your little bedtime ritual, but the formula of THE dream does not contain any addictive ingredients.
THE skin
WHY IS THERE NO COLLAGEN IN THE skin?
Collagen is a large protein, and there is no evidence that it ends up in the skin when ingested. Instead, we chose to add the building blocks of collagen (amino acids) and vitamin C, which contributes to normal collagen formation for the normal function of the skin, to the formula of THE skin.
CAN I COMBINE THE skin WITH COLLAGEN?
Although we are not fans of taking collagen externally, you can certainly combine THE skin with a collagen of your choice.
HOW SHOULD I TAKE THE skin?
Add a scoop of THE skin to a liquid of your choice and mix well. Use our Zirtui mixer or Zirtui shaker for the best result. Want it a little sweeter? Add some honey or a sweetener of your choice. THE skin also goes well with some yoghurt, granola or in a smoothie.
Use within 30 days of opening, store in a cool, dry place.
HOW DOES THE skin TASTE?
THE skin consists of a mixture of various freeze-dried berries and fruit, which gives THE skin a peach-like taste. Want it a little sweeter? Add a sweetener of your choice.
THE carbX
WHAT IS THE carbX AND WHO IS IT FOR?
Bread, pasta, rice, potatoes, dessert. Carbohydrates are not the enemy. Your body runs on them, and glucose is simply fuel. No glucose, no energy.
But fuel needs regulating, and too much can also have a negative impact. Your body constantly keeps your blood glucose within a narrow margin, one of the most finely tuned systems you have, and it runs day and night, at every meal, your whole life long.
THE carbX is your partner at mealtimes. One capsule contains chromium, vitamin C, cinnamon, taurine and a standardised extract of white mulberry leaf (Reducose®). Chromium contributes to the maintenance of normal blood glucose levels. THE carbX is an addition to a healthy lifestyle, not a free pass.
WHEN AND HOW DO I TAKE THE carbX?
Take one capsule of THE carbX just before your meal, with some water. Do not take on an empty stomach.
WHAT IS REDUCOSE®?
Reducose® is a standardised extract of white mulberry leaf, a trademark of Phynova Group Ltd. White mulberry leaf naturally contains DNJ, a molecule that resembles sugar. No health claim has yet been approved in the EU for white mulberry. You will find Reducose® in THE carbX.
CAN I TAKE THE carbX IF I USE DIABETES MEDICATION?
Consult your doctor or pharmacist first before taking THE carbX, especially if you are following an antidiabetic treatment.
CAN I TAKE THE carbX IF I AM PREGNANT OR BREASTFEEDING?
No. THE carbX is not intended for use during pregnancy or breastfeeding, nor for people under 18.
WHAT ARE AGEs?
Glycation is a natural process in which sugar binds to proteins such as collagen. This produces AGEs (advanced glycation end products). Healthy habits help slow down their build-up: drinking enough water, not smoking, sleeping well, moving, reducing stress and protecting your skin from the sun. Want to read more? Check our blog post about AGEs.
THE perform
ISN'T CREATINE JUST FOR BODYBUILDERS?
No. Creatine is one of the best-researched supplements, with two health claims approved by the EU. One of them concerns people over 55: daily consumption of creatine (3 g per day combined with resistance training at least 3 times a week) can enhance the effect of resistance training on muscle strength in adults over 55. Discover THE perform - creatine. Strength matters. At every age.
HOW MUCH CREATINE SHOULD I TAKE PER DAY?
One teaspoon (minimum 3 g) of THE perform - creatine per day, in 200 to 250 ml of water, your shake, your smoothie or another Zirtui product. Drink enough water throughout the day. One 180 g pouch lasts 60 days.
WHEN IS THE BEST TIME TO TAKE CREATINE?
The time of day does not matter that much. What matters most is taking THE perform - creatine consistently.
IS CREATINE ALSO FOR WOMEN?
Yes. The claims apply to adults, whether you are a man or a woman. THE perform - creatine is not suitable during pregnancy or breastfeeding.
FROM WHAT AGE CAN I USE THE perform - creatine?
THE perform - creatine is intended for people over 12.
WHAT IS THE perform - magnesium?
THE perform - magnesium contains four organic forms: bisglycinate, citrate, malate and taurate, supplemented with vitamin B6, folate and B12. The daily dose (2 capsules) provides 200 mg of magnesium. Magnesium contributes to normal muscle function and the normal functioning of the nervous system.
WHY FOUR FORMS AND NO MAGNESIUM OXIDE?
Most supplements use magnesium oxide: cheap, but less easily absorbed and harder on your gut. In THE perform - magnesium we combine four organic forms, so that the dose stays gentle on the stomach and gut.
HOW DO I TAKE THE perform - magnesium?
Take 2 capsules of THE perform - magnesium daily after a meal, with plenty of water. You may spread them over the day. Store in a cool, dry place.
CAN I COMBINE THE perform - magnesium WITH THE dream?
Yes. THE dream also contains magnesium, so add both together and stay within the recommended daily dose on the label of THE perform - magnesium. When in doubt, ask your pharmacist.
CAN I TAKE THE perform - magnesium IF I AM PREGNANT OR ON MEDICATION?
If you are pregnant, breastfeeding or taking medication, consult your doctor or pharmacist first before taking THE perform - magnesium, as with any food supplement. Not intended for children under 12.
WHAT IS THE perform - omega 3?
THE perform - omega 3 contains omega 3 directly from the microalga Schizochytrium, not from fish. Two capsules provide 300 mg DHA and 150 mg EPA. DHA contributes to the maintenance of normal brain function. EPA and DHA contribute to the normal function of the heart (with a daily intake of 250 mg DHA or DHA + EPA).
WHY ALGAE AND NOT FISH OIL?
Fish do not produce omega 3 themselves: they get it from algae. In THE perform - omega 3 we skip that step. No fishing, no fishy smell, and the algae are grown under controlled conditions.
IS THE perform - omega 3 VEGAN?
Yes. The omega 3 in THE perform - omega 3 comes from microalgae and the capsule is plant-based (HPMC).
HOW DO I TAKE THE perform - omega 3?
Take 2 capsules of THE perform - omega 3 daily after a meal. One pouch of 60 capsules lasts one month.
Bundles & accessories
WHAT IS IN THE day & night?
THE day & night contains one pouch of THE blend for the morning and one pouch of THE dream for the evening. Two moments, two habits, one package.
WHAT IS IN THE meno+ kit AND WHO IS IT FOR?
THE meno+ kit contains THE perform - creatine, THE blend and THE dream: three products that each fit a different moment of your day. Your morning, your evening and your training. Put together for those who notice that from their fifties, sleep, training and body ask for different things.
WHAT IS THE mixer FOR?
THE mixer is a stainless steel mixer with holder. It mixes your blend in a few seconds and also froths milk. Works on 2 AAA batteries (not included). Ideal for mixing THE blend, THE skin, THE dream or your creatine.
WHAT IS THE bottle?
THE bottle is a shaker made of borosilicate glass with a silicone sleeve, pouring cap with handle and stainless steel shaker ball. Hand wash only, not dishwasher safe. Ideal for quickly shaking THE blend, THE skin or your creatine. Handy during sports, or to make your shake at work or take it with you on the go.
DO I NEED THE spoon?
THE spoon gives you the right amount of your favourite blend every time. We are moving away from plastic disposable scoops in our packaging. THE spoon is the perfect sustainable answer and alternative: a reusable stainless steel measuring scoop.
WHAT IS THE journal?
THE journal is a Dutch-language longevity journal with practical insights into nutrition, exercise, sleep, stress and social connection, and daily pages to turn healthy intentions into daily habits.
WHAT IS THE book?
THE book "Stop de klok" is written by Dr. Ellen Crabbe, molecular biologist. She explains the difference between your chronological and your biological age, and how to work on healthy ageing through nutrition, exercise and stress management.
HOW DOES THE gift card WORK?
THE gift card is delivered digitally and can be redeemed on zirtui.com, on all products. You choose an amount from 25 to 200 euro, and optionally a recipient, a message and a sending date. No expiry date.
Ordering & Shipping
ARE THERE ANY SHIPPING COSTS?
Shipping is free from 75 euro within the EU.
CAN I RETURN MY ORDER?
If your order has not been opened and is not damaged, you can return your order within 14 days. Contact us via the contact page. Please note that Zirtui cannot refund shipping costs when you return your package.
DO YOU SHIP INTERNATIONALLY OR OUTSIDE THE EU?
For now, we only ship within the EU. For other countries, please contact us.
CAN I TRACK MY ORDER?
Yes, when you order and pay, you will receive an email with tracking information.
DO YOU OFFER A SUBSCRIPTION?
Not at the moment. We do have bundles with an extra discount, such as THE day & night and THE meno+ kit.
WHICH PAYMENT METHODS CAN I USE?
Bancontact, iDEAL, KBC, credit card and PayPal.
CAN I BECOME A B2B RESELLER OF ZIRTUI?
Yes, of course! Click on B2B at the bottom of the page to submit your request and we will contact you as soon as possible.
CAN I ORDER AS A COMPANY?
Yes. Click on B2B at the bottom of the page to register.