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NutraBio MultiSport for Women — 33 Nutrients with Iron, Chelated Forms

NutraBio MultiSport for Women33 vitamins, minerals and micronutrients in the more bioavailable forms, formulated for active women. Fully disclosed, no proprietary blends.Why a separate women's formula — the iron questionMost "for women" supplements differ from the men's version only in packaging. This one differs in something that genuinely matters: iron.Iron requirements differ substantially by sex, and the gap is large. Menstruating women lose iron every cycle, and the recommended intake reflects that — roughly 18mg daily for women of reproductive age against 8mg for adult men.Which is why men's multivitamins typically contain little or no iron. Men have no routine route of iron loss, and accumulated excess iron is genuinely harmful rather than merely wasteful. That is a real formulation decision rather than marketing segmentation.⚠ Why this matters more for female athletes than almost anyoneIron deficiency is one of the most common and most under-recognised issues in women who train, and the reasons compound. Menstrual losses, which continue every month regardless of training Sweat losses. Iron is lost in sweat, and heavy trainers sweat a great deal Foot-strike haemolysis. Repeated impact — running especially — physically damages red blood cells in the feet, and runners lose iron this way Increased demand. Iron is central to haemoglobin, which carries oxygen. Training raises both red blood cell turnover and oxygen demand Restricted eating. Reduced calories usually means reduced iron, and red meat is often among the first things cutThe symptoms are easy to misread: fatigue, poor recovery, breathlessness during efforts that used to feel fine, declining performance. Those look exactly like overtraining or a bad training block — which is why iron deficiency in female athletes is frequently missed for months.And it develops before anaemia does. Ferritin — your stored iron — falls first, and performance can be affected while haemoglobin still reads normal. A standard blood count may miss it entirely.If any of that sounds familiar, ask for ferritin specifically rather than accepting a normal full blood count as the whole answer.The formulation quality is the same as the men's versionThe forms are where multivitamins cut costs, and MultiSport uses the better ones throughout: MineralsAlbion TRAACS chelated, rather than oxides and carbonates Vitamin ENatural d-alpha-tocopheryl succinate, not synthetic dl-alpha Vitamin KMenaQ7 MK-7, with a longer half-life than MK-4Chelation matters particularly for iron. Iron supplements have a well-earned reputation for causing constipation, nausea and stomach pain — largely because inorganic iron salts are poorly absorbed and the unabsorbed remainder irritates the gut. Chelated iron is generally considerably better tolerated, which matters when the alternative is people abandoning a supplement they need.Full explanation of chelation on our Reacted Magnesium page.⚠ Getting the most from the ironIron absorption is unusually sensitive to what you take it with, and these are all free to act on.Improves absorption: Vitamin C. It substantially increases absorption of non-haem iron — the form in supplements and plant foods. Taking iron with a vitamin C source is one of the highest-value habits available. Our Vitamin C page covers thisReduces absorption considerably: Coffee and tea. Tannins and polyphenols bind iron. This is a large effect, not a marginal one — leave at least an hour Calcium and dairy, which compete directly Whole grains and legumes, which contain phytates that bind ironThe single most common mistake is taking a multivitamin with breakfast coffee. Worth moving.Specs Nutrients33 vitamins, minerals and micronutrients IronIncluded — the key difference from the men's formula MineralsAlbion TRAACS chelated Vitamin Ed-alpha-tocopheryl succinate (natural) Vitamin KMenaQ7 MK-7 Capsules120 LabelFully disclosed, no proprietary blends TestingThird-party tested, published at checkmysupps.comHow to take it With food, since vitamins A, D, E and K are fat-soluble. With a vitamin C source — fruit, juice or a supplement — to improve iron absorption. Away from coffee and tea by at least an hour. This matters more than most people realise. Away from dairy and calcium supplements. Split across two meals if the serving is more than one capsule. Expect bright yellow urine. Riboflavin, and harmless.Who this is for Active women, particularly runners and anyone with heavy sweat losses Women in a caloric deficit, where both micronutrients and iron-rich foods usually drop Anyone menstruating, given the routine monthly iron loss Vegetarian and vegan women — plant iron is absorbed considerably less efficiently than iron from meat Anyone who wants the better-absorbed forms rather than the cheapest availableWho this is not forMen. Use the men's version. Men have no routine iron loss, and accumulated excess is genuinely harmful rather than simply wasted.Anyone post-menopause, without checking. Iron requirements drop substantially once menstruation ends — commonly to around the same 8mg as men. Speak to your doctor about whether an iron-containing multivitamin still suits you.⚠ Anyone with haemochromatosis or any iron overload condition. This is a genuine contraindication, not a caution.Anyone already taking a separate iron supplement — add up the total.Anyone on warfarin, given the vitamin K content. Speak to your doctor.Not for anyone under 18, pregnant or nursing without medical advice — prenatal requirements differ considerably.Stack it with: vitamin C to improve iron absorption, and fish oil.Frequently asked questionsWhat is the difference from the men's version?Principally iron. Menstruating women need roughly 18mg daily against 8mg for men, so men's formulas typically contain little or none — accumulated excess iron is harmful rather than merely wasteful.Why are female athletes prone to low iron?Menstrual losses, sweat losses, foot-strike haemolysis from running impact, increased demand from training, and often restricted eating. The causes compound.What does low iron feel like?Fatigue, poor recovery, breathlessness during efforts that used to feel manageable, and declining performance — which is easily mistaken for overtraining.What should I get tested?Ask for ferritin specifically. Stored iron falls before haemoglobin does, so performance can be affected while a standard blood count still reads normal.How do I absorb the iron better?Take it with a vitamin C source, and keep it at least an hour away from coffee, tea, dairy and calcium supplements. The coffee effect in particular is large.Should I take it after menopause?Check with your doctor. Iron requirements drop substantially once menstruation ends.Can men take it?They should not. Use the men's version, which is formulated without the added iron.Why does iron upset my stomach?Usually the form. Inorganic iron salts are poorly absorbed and the unabsorbed remainder irritates the gut; chelated iron is generally better tolerated. Read more

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NutraBio MultiSport for Women

33 vitamins, minerals and micronutrients in the more bioavailable forms, formulated for active women. Fully disclosed, no proprietary blends.

Why a separate women's formula — the iron question

Most "for women" supplements differ from the men's version only in packaging. This one differs in something that genuinely matters: iron.

Iron requirements differ substantially by sex, and the gap is large. Menstruating women lose iron every cycle, and the recommended intake reflects that — roughly 18mg daily for women of reproductive age against 8mg for adult men.

Which is why men's multivitamins typically contain little or no iron. Men have no routine route of iron loss, and accumulated excess iron is genuinely harmful rather than merely wasteful. That is a real formulation decision rather than marketing segmentation.

⚠ Why this matters more for female athletes than almost anyone

Iron deficiency is one of the most common and most under-recognised issues in women who train, and the reasons compound.

Menstrual losses, which continue every month regardless of training
Sweat losses. Iron is lost in sweat, and heavy trainers sweat a great deal
Foot-strike haemolysis. Repeated impact — running especially — physically damages red blood cells in the feet, and runners lose iron this way
Increased demand. Iron is central to haemoglobin, which carries oxygen. Training raises both red blood cell turnover and oxygen demand
Restricted eating. Reduced calories usually means reduced iron, and red meat is often among the first things cut

The symptoms are easy to misread: fatigue, poor recovery, breathlessness during efforts that used to feel fine, declining performance. Those look exactly like overtraining or a bad training block — which is why iron deficiency in female athletes is frequently missed for months.

And it develops before anaemia does. Ferritin — your stored iron — falls first, and performance can be affected while haemoglobin still reads normal. A standard blood count may miss it entirely.

If any of that sounds familiar, ask for ferritin specifically rather than accepting a normal full blood count as the whole answer.

The formulation quality is the same as the men's version

The forms are where multivitamins cut costs, and MultiSport uses the better ones throughout:

Minerals	Albion TRAACS chelated, rather than oxides and carbonates
Vitamin E	Natural d-alpha-tocopheryl succinate, not synthetic dl-alpha
Vitamin K	MenaQ7 MK-7, with a longer half-life than MK-4

Chelation matters particularly for iron. Iron supplements have a well-earned reputation for causing constipation, nausea and stomach pain — largely because inorganic iron salts are poorly absorbed and the unabsorbed remainder irritates the gut. Chelated iron is generally considerably better tolerated, which matters when the alternative is people abandoning a supplement they need.

Full explanation of chelation on our Reacted Magnesium page.

⚠ Getting the most from the iron

Iron absorption is unusually sensitive to what you take it with, and these are all free to act on.

Improves absorption:

Vitamin C. It substantially increases absorption of non-haem iron — the form in supplements and plant foods. Taking iron with a vitamin C source is one of the highest-value habits available. Our Vitamin C page covers this

Reduces absorption considerably:

Coffee and tea. Tannins and polyphenols bind iron. This is a large effect, not a marginal one — leave at least an hour
Calcium and dairy, which compete directly
Whole grains and legumes, which contain phytates that bind iron

The single most common mistake is taking a multivitamin with breakfast coffee. Worth moving.

Specs

Nutrients	33 vitamins, minerals and micronutrients
Iron	Included — the key difference from the men's formula
Minerals	Albion TRAACS chelated
Vitamin E	d-alpha-tocopheryl succinate (natural)
Vitamin K	MenaQ7 MK-7
Capsules	120
Label	Fully disclosed, no proprietary blends
Testing	Third-party tested, published at checkmysupps.com

How to take it

With food, since vitamins A, D, E and K are fat-soluble.
With a vitamin C source — fruit, juice or a supplement — to improve iron absorption.
Away from coffee and tea by at least an hour. This matters more than most people realise.
Away from dairy and calcium supplements.
Split across two meals if the serving is more than one capsule.
Expect bright yellow urine. Riboflavin, and harmless.

Who this is for

Active women, particularly runners and anyone with heavy sweat losses
Women in a caloric deficit, where both micronutrients and iron-rich foods usually drop
Anyone menstruating, given the routine monthly iron loss
Vegetarian and vegan women — plant iron is absorbed considerably less efficiently than iron from meat
Anyone who wants the better-absorbed forms rather than the cheapest available

Who this is not for

Men. Use the men's version. Men have no routine iron loss, and accumulated excess is genuinely harmful rather than simply wasted.

Anyone post-menopause, without checking. Iron requirements drop substantially once menstruation ends — commonly to around the same 8mg as men. Speak to your doctor about whether an iron-containing multivitamin still suits you.

⚠ Anyone with haemochromatosis or any iron overload condition. This is a genuine contraindication, not a caution.

Anyone already taking a separate iron supplement — add up the total.

Anyone on warfarin, given the vitamin K content. Speak to your doctor.

Not for anyone under 18, pregnant or nursing without medical advice — prenatal requirements differ considerably.

Stack it with: vitamin C to improve iron absorption, and fish oil.

Frequently asked questions

What is the difference from the men's version?
Principally iron. Menstruating women need roughly 18mg daily against 8mg for men, so men's formulas typically contain little or none — accumulated excess iron is harmful rather than merely wasteful.

Why are female athletes prone to low iron?
Menstrual losses, sweat losses, foot-strike haemolysis from running impact, increased demand from training, and often restricted eating. The causes compound.

What does low iron feel like?
Fatigue, poor recovery, breathlessness during efforts that used to feel manageable, and declining performance — which is easily mistaken for overtraining.

What should I get tested?
Ask for ferritin specifically. Stored iron falls before haemoglobin does, so performance can be affected while a standard blood count still reads normal.

How do I absorb the iron better?
Take it with a vitamin C source, and keep it at least an hour away from coffee, tea, dairy and calcium supplements. The coffee effect in particular is large.

Should I take it after menopause?
Check with your doctor. Iron requirements drop substantially once menstruation ends.

Can men take it?
They should not. Use the men's version, which is formulated without the added iron.

Why does iron upset my stomach?
Usually the form. Inorganic iron salts are poorly absorbed and the unabsorbed remainder irritates the gut; chelated iron is generally better tolerated.