Top 8 Benefits and Side Effects of coq10 for men and women

Top 8 Benefits and Side Effects of CoQ10 for Men and Women in the UK and Ireland

Andy Smith | 13/06/2025

    Coenzyme Q10 (CoQ10) is a crucial antioxidant that supports energy production, heart health, and overall well-being. Many men and women take it to improve stamina, fertility and cognitive function.

    The benefits and side effects of CoQ10 for men and women in the UK and Ireland also include better muscle recovery and potential support for testosterone levels. However, whilst generally safe, it may cause mild side effects like digestive discomfort or medication interactions. In this blog, we’ll explore the top 8 benefits and side effects of CoQ10 for men and women.

    What is CoQ10?

    CoQ10, or Coenzyme Q10, is a naturally occurring antioxidant found in every cell of the body that plays a key role in energy production. It helps convert food into usable cellular energy and supports heart, brain, and muscle health.

    As CoQ10 levels decline with age, supplementation may help maintain energy levels, cardiovascular function, and overall wellness in both men and women. CoQ10 supplements are widely available in the UK and Ireland at pharmacies such as Boots and Holland & Barrett, as well as online.

    Benefits and Side Effects of CoQ10 for Men and Women

    Coenzyme Q10 (CoQ10) is a powerful antioxidant that is vital to energy production and overall health. The benefits of CoQ10 for men range from boosting heart health to improving fertility. However, it is essential to understand its potential side effects before supplementation.

    Top 8 Benefits of taking CoQ10 

    Enhances heart health

    by supporting cellular energy production and promoting efficient cardiovascular function. The British Heart Foundation notes that CoQ10 may support cardiovascular function, though it recommends speaking to your GP or cardiologist before supplementing.

    Boosts energy levels

    by aiding mitochondrial activity, helping reduce everyday fatigue and improve stamina.

    Supports male fertility

    by improving sperm quality and protecting reproductive cells from oxidative stress.

    Improves brain function

    by supporting cognitive performance, mental clarity, and neurological health.

    Reduces muscle fatigue

    by enhancing muscle recovery and energy utilisation, especially during physical activity.

    Helps maintain healthy blood pressure

    by supporting vascular health and improving blood flow.

    Supports healthy testosterone levels

    by reducing oxidative stress that can impact hormonal balance.

    Acts as a powerful antioxidant

    that helps protect cells from free radical damage and supports overall longevity.

    Side Effects of taking CoQ10

    • Digestive discomfort
    • Low blood pressure
    • Insomnia
    • Headaches
    • diarrhoea
    • Possible interactions with medications

    Is CoQ10 Good for Testosterone?

    Coenzyme Q10 (CoQ10) plays a crucial role in energy production and antioxidant defense. Studies suggest it may support testosterone levels by enhancing mitochondrial function and reducing oxidative stress.

    Additionally, CoQ10 may improve sperm quality and overall male reproductive health. whilst not a direct testosterone booster, its benefits on cellular energy and hormone balance make it a valuable supplement. For optimal results, consult a GP or pharmacist before adding CoQ10 to your regimen. It is a valuable food supplement, as classified under UK and EU regulations.

    Is CoQ10 Good for Your Prostate?

    Coenzyme Q10 (CoQ10) is a powerful antioxidant that may support prostate health by reducing oxidative stress and inflammation. Some research suggests that CoQ10 can improve cellular function and potentially aid in prostate health, including lowering the risk of prostate-related issues.

    Whilst not a direct treatment, its overall benefits for cardiovascular and mitochondrial health may contribute to better prostate function. Speak to your GP or pharmacist before adding CoQ10 to your supplement routine.

    CoQ10 and Statins: What UK and Irish Patients Should Know

    Atorvastatin, simvastatin, rosuvastatin and other statins are the top prescribed medications in UK and Ireland. Around 8 millions people take them to control their cholesterol levels and to lower their risk of developing cardiovascular diseases.

    However, statins can also reduce the body's natural CoQ10 levels as a side effect. It is because statins inhibit the same pathway in the body that is responsible for manufacturing cholesterol as well as CoQ10. Due to this, a few people on statins suffer from muscle pain, weakness or fatigue which may be the result of lowered levels of CoQ10.

    Currently the NICE guidelines do not recommend CoQ10 as a major therapeutic agent to alleviate statin-induced muscle symptoms. Still, there is a trend in both UK and Ireland that many people taking statins also supplement CoQ10. There are a few clinical trials that have shown interesting outcomes but generally the evidence is not very strong.

    Still, if you are taking statins and considering CoQ10 supplementation, the best way is to have a conversation with your GP or pharmacist in advance in particular if you happen to be on warfarin as in that case CoQ10 might have an impact on your INR levels which will also necessitate you to be monitored by the anticoagulant clinic.

    Medications to Avoid with CoQ10

    Coenzyme Q10 (CoQ10) may interact with certain medications, including blood thinners like Marevan, if you take marevan, CoQ10 may affect your INR levels, so always inform your GP or anticoagulant clinic before starting supplementation. It may also interfere with blood pressure medications, leading to unwanted fluctuations.

    In the UK, CoQ10 is classified as a food supplement, not a licensed medicine, and is not routinely recommended in NICE guidelines. In Ireland, CoQ10 supplements are regulated by the HPRA and are widely available at pharmacies including Lloyds, Life Pharmacy, and McCauley's, as well as online.

    Additionally, CoQ10 can impact chemotherapy drugs, potentially altering their efficacy. If you are taking any prescription medication, consult your practitioner or GP before adding CoQ10 to your routine to ensure safety and avoid potential interactions.

    Conclusion

    CoQ10 offers valuable health benefits for both men and women, including improved energy, heart health, brain function, and fertility support. Whilst generally safe, mild side effects may occur at higher doses. Most UK adults take between 100- 300mg daily, though you should follow the guidance on the product label or from your GP. 

    Choosing a quality supplement and following proper dosage helps maximise benefits. Always consult a GP or pharmacist to ensure CoQ10 aligns with your individual health needs and wellness goals. 

    Frequently Asked Questions

    What are the main benefits of CoQ10 for men and women? +
    CoQ10 supports energy production, heart health, brain function, fertility, skin health, and antioxidant protection, helping both men and women maintain vitality and overall cellular health.
    Is CoQ10 safe to take daily, and what are the side effects? +
    CoQ10 is generally safe for daily use. Mild side effects may include nausea, stomach upset, headache, or sleep disturbance, especially at higher doses.
    How much CoQ10 should men and women take per day? +
    Most adults benefit from 100- 200 mg of CoQ10 daily, depending on age, health needs, and medical advice. Higher doses may be used under supervision.
    Can CoQ10 improve fertility and hormone balance in men and women? +
    CoQ10 may improve sperm quality in men and support egg quality, ovarian function, and hormonal balance in women by reducing oxidative stress.
    Who should avoid taking CoQ10 supplements? +
    People who are pregnant, breastfeeding, taking blood thinners, blood pressure medication, or managing chronic conditions should consult a healthcare professional before using CoQ10.