CoQ10 and Fertility: Why It’s Important for Conception

Coenzyme Q10, or CoQ10, is a compound involved in cellular energy production and antioxidant protection. It is often discussed in fertility nutrition because egg cells and sperm cells both rely on energy production and can be affected by oxidative stress.

CoQ10 is not a fertility treatment and it cannot guarantee conception or IVF success. However, some people consider it as part of a wider preconception or fertility nutrition plan, particularly when preparing for conception, IVF or supporting egg and sperm health.

For a broader explanation of what CoQ10 does in the body and why it is discussed in fertility, start with our guide: What Does CoQ10 Do? This article focuses on how CoQ10 may fit into a conception-focused supplement plan.

What is CoQ10?

CoQ10 stands for coenzyme Q10. It is naturally found in cells throughout the body and plays a role in mitochondrial energy production. Mitochondria are the parts of cells that help produce ATP, the energy molecule cells use to function.

CoQ10 also has antioxidant activity, which means it helps manage some of the oxidative processes that occur during normal cell activity. These functions are why CoQ10 is often discussed in relation to reproductive cells, including eggs and sperm.

For a more detailed explanation, read: What Does CoQ10 Do?

Why CoQ10 is discussed in fertility planning

CoQ10 is discussed in fertility planning because the biological processes it supports are relevant to reproductive cells.

• Energy production: Egg cells and sperm cells both rely on energy. CoQ10 is involved in mitochondrial energy production, which is why it is often discussed alongside egg quality, sperm motility and IVF preparation.
• Antioxidant protection: Oxidative stress is one factor researchers have explored in relation to egg and sperm cell health. CoQ10 has antioxidant activity, which is why it is sometimes considered within a wider fertility nutrition plan.
• Age-related context: CoQ10 levels naturally decline with age, which is part of why it is often discussed for people preparing for conception later in reproductive life.

These points do not mean CoQ10 guarantees fertility outcomes. It is best understood as nutritional support that may be considered alongside diet, lifestyle and professional guidance.

CoQ10 and female fertility

In female fertility, CoQ10 is often discussed because egg cells are highly energy-dependent. Mitochondrial function is relevant to egg development, and oxidative stress is one of the factors researchers have explored in relation to reproductive ageing.

Research has looked at CoQ10 in contexts such as diminished ovarian reserve, ovarian response and IVF preparation. These findings are promising, but they should not be treated as a guarantee of improved fertility or pregnancy outcomes.

CoQ10 may be one nutrient to consider as part of a wider fertility nutrition plan, particularly where someone is focusing on egg quality, age-related fertility context or assisted reproduction preparation.

For more on this topic, read our guide to CoQ10 and fertility after 40.

CoQ10 and male fertility

CoQ10 is also relevant to male fertility nutrition. Sperm cells need energy for movement, and oxidative stress is considered relevant to sperm quality.

Research has explored CoQ10 in relation to sperm concentration, motility and morphology. This makes CoQ10 a relevant topic for couples preparing for conception, not only for women.

However, CoQ10 should not be presented as a treatment for male infertility. Sperm health is influenced by many factors, including lifestyle, age, medical history and wider nutrition.

For more detail, read our guide to CoQ10 and male fertility.

Choosing a CoQ10 supplement as part of a fertility plan

Once someone understands why CoQ10 is discussed in fertility, the next question is usually which form and supplement approach may be most appropriate.

CoQ10 supplements are commonly available as ubiquinone or ubiquinol. Ubiquinone can be appropriate for general health and robust metabolic function, while ubiquinol may be considered where oxidative stress, age, conversion capacity or higher biological demand are relevant, such as in some fertility preparation contexts.

When choosing a CoQ10 supplement as part of a fertility plan, it can be helpful to consider:

• the form of CoQ10 used
• dose clarity
• how it fits alongside a fertility multivitamin or wider supplement plan
• whether it is being considered for egg quality, sperm health, IVF preparation or age-related fertility context
• whether professional guidance is needed for your circumstances

For a deeper comparison, read our guide to ubiquinol vs ubiquinone.

Where Kaneka Ubiquinol fits

Kaneka Ubiquinol is a branded form of ubiquinol, the reduced form of CoQ10. Zita West uses Kaneka Ubiquinol in its fertility-focused CoQ10 supplement for people preparing for conception.

It may be relevant where someone is already considering CoQ10 in relation to egg quality, sperm health, IVF preparation, an age-related fertility context or oxidative stress. As with any supplement, it should be chosen as part of an individual fertility nutrition plan, alongside a varied diet and, where appropriate, professional guidance.

For a deeper explanation of this form, read our Kaneka Ubiquinol research guide, or learn more about Zita West Kaneka Ubiquinol.

Zita West Kaneka Ubiquinol

A fertility-focused CoQ10 supplement providing Kaneka Ubiquinol, the reduced form of CoQ10, in capsule form. Available in a range of pack sizes to fit into a wider preconception nutrition plan.

Learn more about Zita West Kaneka Ubiquinol

How CoQ10 may fit into a wider fertility plan

CoQ10 may be considered in different fertility preparation contexts, but it should be viewed as one part of a wider plan rather than a standalone solution.

It may be discussed by people who are:

• preparing to try to conceive naturally
• preparing for IVF or assisted reproduction
• focusing on egg quality
• focusing on sperm health
• building a preconception supplement routine

The right approach depends on individual context, including age, diet, fertility history, treatment plans, medication use and any existing health conditions.

For more context, read our guide to building a fertility supplement routine.

How long to take CoQ10 for fertility support

Because egg and sperm development take place over weeks rather than days, many fertility nutrition plans use a preparation window before actively trying to conceive or starting treatment. A three-month window is commonly discussed in preconception planning.

If you are preparing for IVF, taking medication or have a diagnosed fertility condition, speak to your fertility specialist or another qualified healthcare professional before starting CoQ10 or changing your supplement routine.

For more detail, read our CoQ10 timing guide and our CoQ10 dosage guide.

Are there any side effects?

CoQ10 is generally considered well tolerated for many people, but some may experience mild digestive symptoms, particularly at higher intakes.

Suitability can vary depending on your health history, medication use and fertility treatment plan. Always speak to a healthcare professional before starting a new supplement, especially if you are undergoing IVF, taking medication, or managing an existing health condition. We generally do not recommend taking CoQ10 when pregnant and you can learn more about this here.

CoQ10 is often discussed in fertility nutrition because of its role in cellular energy production and antioxidant protection. These functions are relevant to egg cells, sperm cells and reproductive tissues, which is why CoQ10 is commonly considered in preconception, IVF preparation and male fertility contexts.

It should not be seen as a standalone fertility solution. The most appropriate approach depends on your individual circumstances, including your fertility history, age, diet, treatment plans and wider supplement routine.

If you would like support choosing supplements for your stage of the journey, you can book a free 1:1 fertility product consultation.

This article is for general information and educational purposes only and does not constitute medical advice. It is not intended to diagnose, treat, cure or prevent any condition, and should not replace guidance from a qualified healthcare professional. Fertility is influenced by many individual factors, and supplement suitability, including CoQ10 and its various forms, can vary from person to person. Please speak to your doctor, fertility specialist or another qualified healthcare professional before starting any new supplement, particularly if you are undergoing fertility treatment, are pregnant, are taking medication, or have an existing health condition.