• Coenzyme Q10 400mg nutritional information per capsule.
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Coenzyme Q10 400mg

Coenzyme Q10 400mg

High-strength Coq10 for female preconception

High-dose naturally-fermented CoQ10, for women over 35, preparing for IVF, or focused on egg quality. Ideally started around three months before conception or egg collection.

  • 800mg per day: one 400mg capsule taken twice daily
  • Naturally-fermented ubiquinone: high purity and highly stable
  • Ubiquinone is the form most studied in fertility research
  • In a glass bottle with no synthetic fillers, binders or additives
  • Made in the UK to GMP standards

Learn why we use ubiquinone and not ubiquinol →

Looking for CoQ10 for male preconception? Our CoQ10 200mg delivers 400mg per day. Made in the UK to GMP standards.

£40.00 GBP
£40.00 GBP
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  • Inspired by our fertility journey
  • Made in the UK to GMP standards
  • Free UK shipping over £45

What is it?

A high-strength, naturally fermented CoQ10 supplement providing 400mg ubiquinone per capsule. Take one capsule twice daily for a total daily dose of 800mg.

Ubiquinone is the form of CoQ10 most widely used in fertility research.

60 capsules = 30 day supply.

Who is it for?

For women who want to include CoQ10 in their preconception preparation, particularly those over 35 or preparing for IVF or egg freezing.

Ideally, start around three months before trying to conceive or before a planned egg collection.

Suitable for vegetarian and vegan diets. Free from allergenic ingredients.

How should I take it?

Take one 400mg capsule twice daily, preferably with food — for example, one with breakfast and one with dinner.

CoQ10 is fat-soluble, so taking it with a meal containing fat can help with absorption.

It can be taken alongside Fundamental Woman, omega-3, myo-inositol and magnesium bisglycinate. If you take other supplements containing CoQ10, check the combined daily amount.

Most women start around three months before trying to conceive or before a planned egg collection.

What's inside?

Naturally fermented ubiquinone — 400mg
Produced by fermentation and provided in the all-trans form.

Vegetable capsule shell (hydroxypropyl methylcellulose)
Plant-based.

Bamboo silica
A plant-derived ingredient used to support consistent capsule filling.

That’s it.

How is it different?

Naturally fermented ubiquinone: produced by fermentation in the all-trans form, the same structural form of CoQ10 found in the body.

A high-strength dose: 400mg per capsule, taken twice daily to provide 800mg per day.

Ubiquinone: the form most widely used in fertility research.

Amber glass bottle: helps protect the contents from light and reduces the product’s contact with plastic.

Made in the UK: manufactured to Good Manufacturing Practice (GMP) standards.

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Allergen information

This product is free from all 14 major allergens as defined by UK food supplement labelling regulations — including gluten and soya.

Who is this for?

  • Women over 35

    For women who want to add CoQ10 to their preconception routine as they get older.

  • For women who want to take a more comprehensive approach

    For women who already have the nutritional foundations covered and want to add CoQ10 to their preconception routine.

  • Women preparing for IVF

    For women who want to include the dose of CoQ10 used in fertility research as part of their preparation for treatment.

  • Women considering egg freezing

    For women preparing for a future egg collection and looking to include CoQ10 in the months beforehand.
Ubiquinone The CoQ10 form studied in IVF research
800mg Daily dose
~3 months Recommended lead-in before conception or egg collection
Dr Belinda Adams, Founder of Fertility Hero
Dr Belinda Adams Founder, Fertility Hero
Doctor, 6 rounds of IVF, mum of two
"I went through three rounds of IVF before I really understood CoQ10 — the different forms, the doses being studied and why starting well before treatment mattered. By then, I’d spent countless hours trying to make sense of the research myself.

I created this because I wanted other women to have a straightforward option: naturally fermented ubiquinone, at a meaningful dose, without a long list of unnecessary ingredients."

Why CoQ10 is so interesting in reproductive research

CoQ10 has an established biological role in mitochondrial energy production and antioxidant activity, and has been widely studied in female reproductive research. Here’s the science behind it — and why we chose naturally fermented ubiquinone.

CoQ10 & mitochondrial energy Why CoQ10 is of particular interest in reproductive research
⌄
Coenzyme Q10 (Ubiquinone) Fermented ubiquinone
400mg
per capsule
Central to mitochondrial energy production

CoQ10 is naturally present in mitochondria, where it plays an essential role in the process used to produce ATP — the cell’s energy currency. Egg cells contain large numbers of mitochondria, and processes including egg maturation are highly energy-dependent. This is one reason CoQ10 and mitochondrial function have become an important area of reproductive research.

† No Nutrient Reference Value (NRV) has been established for CoQ10.

CoQ10 & oxidative stress Its dual role in mitochondrial energy production and antioxidant activity
⌄
Coenzyme Q10 (Ubiquinone) Ubiquinone ↔ ubiquinol
400mg
per capsule
CoQ10 also has antioxidant activity

CoQ10 has two closely connected biological roles. Alongside its involvement in mitochondrial energy production, its reduced form, ubiquinol, can act as a lipid-soluble antioxidant. The relationship between mitochondrial function, oxidative stress and reproductive ageing is another reason CoQ10 has attracted considerable interest in female fertility research.

† No Nutrient Reference Value (NRV) has been established for CoQ10.

Why we chose fermented ubiquinone The form, production method and dose behind our formulation
⌄
Fermented Ubiquinone All-trans isomer
400mg
per capsule
All-trans fermented ubiquinone

We use naturally fermented ubiquinone in the all-trans form — the same structural configuration found naturally in the body. Ubiquinone is also the form of CoQ10 used in several clinical studies investigating supplementation in women undergoing fertility treatment.

† No Nutrient Reference Value (NRV) has been established for CoQ10.

Looking for additional support for preconception?

FAQ

When should I start taking CoQ10?

Ideally, start around three months before trying to conceive or before a planned egg collection. CoQ10 has been studied as a pre-treatment in women undergoing fertility treatment, so we think of it as part of preconception preparation rather than something to start at the last minute.

If you have less than three months, you can still start sooner.

Can I take it alongside Fundamental Woman, Omega-3 and myo-inositol?

Yes. CoQ10 can be taken alongside Fundamental Woman, Omega-3, myo-inositol and magnesium bisglycinate as part of your preconception routine.

If you’re taking any other supplements containing CoQ10, check the combined daily amount.

Why ubiquinone and not ubiquinol?

Both are forms of CoQ10 and the body continually converts between them. We chose ubiquinone because it’s the form used in several of the human fertility studies we looked at when developing the product.

Ours is naturally fermented, all-trans ubiquinone, with 400mg in each capsule.

Should I take it with food?

Yes. CoQ10 is fat-soluble, which means it's absorbed significantly better when taken with a meal that contains fat. Take one capsule at breakfast and one at dinner, both with food. Avoid taking both capsules at once, as splitting the dose maintains more consistent levels throughout the day.

How is this different from the CoQ10 in a multivitamin?

Fundamental CoQ10 is a standalone, high-strength supplement providing 400mg of naturally fermented ubiquinone per capsule and 800mg across the recommended daily serving.

That allows us to provide CoQ10 at a dose much closer to those investigated in fertility research than would usually be practical within a multivitamin.

Can I keep taking it once pregnant or when breastfeeding?

We designed this high-strength CoQ10 specifically for the preconception period rather than pregnancy or breastfeeding. Once you have a positive pregnancy test, we recommend stopping it unless your doctor or another healthcare professional has advised you to continue.

Fundamental Woman and Omega-3 are designed to continue through pregnancy and breastfeeding.