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An easy guide to Iron

It's an essential mineral and energy-generating giant. Tiredness, fatigue, blood health, strength, immunity, focus and concentration will all benefit from optimal iron levels. But all too often iron supplements come at a price for your digestive health. Which is why we’ve made Iron Zooki as gentle as it is strong, combining maximum absorbability with minimum side effects. 

Sarah Carolides
What are the benefits of Iron?

Iron is an essential mineral for human health and works primarily by carrying oxygen around the body and into our cells. That oxygen is then used to power up energy levels; support muscle growth; fuel brain focus and concentration levels, detoxify certain unwanted substances and keep the immune system on standby.

What does the research say?
Iron is all about strength & energy

When we think about iron we immediately picture strength and resilience. Rather like carrying around your own arc reactor of power, iron works in the body by carrying around molecules of oxygen to wherever they’re required. It’s that oxygen that’s needed to ward off tiredness; build up muscles and endurance; help us study or concentrate, fire up the immune system and even keep us warm.

How does Iron work?
Oxygen transport

Once inside the body, iron is used by many cells to make heme. This then becomes either hemoglobin in all red blood cells, or myoglobin in muscle cells. It’s the iron in the heme that latches onto oxygen, transporting it around the body and keeping it in the cells where it’s needed.

Energy & enzyme production

Without enough iron, oxygen levels in the cells can become depleted resulting in tiredness, fatigue and reduced concentration. Aside from this essential function, iron also helps make certain key enzymes that help the body function optimally.

What is the best way to take Iron?

Iron bisglycinate has been shown to be 2 or 3 times more efficiently absorbed than iron sulphate. And because we’ve wrapped our iron in lipids, it’s protected from ingredients like phytates and caffeine in food and drink that can interfere with iron absorption when taken together. This clever formulation also minimises those uncomfortable gastric side effects that you usually get from taking iron supplements. Another factor that affects iron absorption levels is Vitamin C, which is why we've included 200mg per sachet to make sure the every last drop gets makes its way directly into the bloodstream.

High strength
Iron bisglycinate
Combined with lipids to increase absorption
Ready to drink
Great taste
No mess
Certified carbon negative
Added Vitamin C
Signs of iron deficiency

Tiredness and lethargy are probably the most recognisable symptoms of low iron levels. But if there’s less oxygen flowing around the body, it affects both mind and body. Concentration and focus, muscle strength and endurance and even nail or hair strength can suffer as a result of iron deficiency. Finally, as oxygen is a key component of the immune system, you may find yourself suffering from more colds and coughs if your iron levels are low.

Is iron suitable for everyone?

Iron can benefit almost everyone, but as it’s a mineral that the body will collect up and store, it’s important to check your levels regularly. There is a genetic condition called hemochromatosis, where people can absorb too much iron and these people must not take iron supplements. Worldwide, however, it’s estimated that up to 50% of the global population may be deficient in iron. In the UK, teenage girls are most at risk of deficiency, but anyone with poor diet, poor digestion or heavy periods could benefit from supplementation.


Each sachet contains 100mg of iron bisglycinate, with an impressive 20mg of active magnesium per sachet - plus an additional 200mg of Vitamin C per sachet.

Iron Zooki is sugar free, dairy free, gluten free, soy free and contains zero artificial ingredients. To see the full list, scroll up to the top of the page and click the "Nutritional information" link placed just above the price of the product.

Iron is an essential mineral nutrient required by the human body for various functions, primarily the production of hemoglobin in red blood cells, which carries oxygen throughout the body. Deficiency can lead to anaemia, characterised by fatigue and weakness due to reduced oxygen delivery to tissues.

Take one sachet daily, either straight from the sachet or add to water, juice, yoghurt and fruit.

We always recommend people who are pregnant or breastfeeding check with a medical professional before they take any new dietary supplement.

Iron Zooki contains iron bisglycinate, a form of iron which is gentle on the stomach. Typical high-street iron supplements are notorious for causing constipation - and we've formulated Iron Zooki to combat just this.

And just like all Zooki products, we've wrapped the iron in lipids to increase the transport and absorption of magnesium around the body.

Iron Zooki is free from gluten, soy, dairy and alcohol.

Iron Zooki is perfectly suitable for vegetarians and vegans alike.

Sarah Carolides
Meet the author...

One of the UK’s top functional medicine and nutrition specialists with over 20 years experience, listed by Vanity Fair as one of ‘The A-List people to know in London’




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