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What is coenzyme Q10?
Coenzyme Q10 is a substance produced naturally by the body and found in every cell, with higher concentrations in tissues that consume the most energy, such as the heart, muscles and liver. Its main action takes place in the mitochondria, where it helps produce ATP, the energy that enables every organ to function. Those looking for a high-quality, purified formulation can browse the full range of coenzyme Q10 products available at the Tsunami store.
Main functions and benefits for the body
Beyond its role in energy production, coenzyme Q10 performs an important antioxidant function: it protects cells from damage caused by free radicals, which accumulate as a result of stress, intense physical activity and the passage of time.
This dual action – providing energy and offering protection – makes Q10 beneficial in many areas: from supporting cardiovascular health to managing persistent fatigue, right through to maintaining muscle health. As we age, the body’s natural production of Q10 tends to decline gradually, which is why an additional intake through diet or targeted supplementation becomes beneficial for many people.
Symptoms of coenzyme Q10 deficiency
A Q10 deficiency often manifests itself through symptoms that are attributed to other causes, such as stress or work-related fatigue. The most common include persistent tiredness that does not improve even with rest, muscle pain with no apparent cause, difficulty concentrating and a general decline in physical stamina.
The immune system may also be affected, leading to increased susceptibility to colds or recurrent infections. Recognising these signs is the first step towards determining, with the help of a healthcare professional, whether Q10 supplementation may be beneficial.
The relationship between coenzyme Q10 and the thyroid
The thyroid is a gland that regulates the metabolism of every cell in the body via the hormones T3 and T4, and to do so it requires large amounts of energy. It is precisely for this reason that the link with coenzyme Q10 is closer than it might seem: several studies have found that people with thyroid dysfunction, whether overactive or underactive, often have lower-than-average levels of Q10. This is because an impaired metabolism uses up the coenzyme more quickly or reduces its synthesis. Those wishing to explore the subject of thyroid health in greater depth can consult the Tsunami section dedicated to thyroid health.
Benefits in Hashimoto’s thyroiditis
Hashimoto’s thyroiditis is an autoimmune disease in which the immune system attacks the thyroid, leading over time to a reduction in its function.
In this context, oxidative stress plays a role in exacerbating inflammation of the gland. Coenzyme Q10, thanks to its antioxidant action, may help to reduce this cellular stress and support the body.
Some studies have found that Q10 supplementation in people with Hashimoto’s was associated with a favourable change in certain inflammatory markers and a general feeling of increased energy. However , this is a complementary support measure and in no way a substitute for treatment prescribed by a doctor; any supplementation must be discussed with your healthcare professional.
Role in hyperthyroidism and hypothyroidism
Inhypothyroidism, when the thyroid produces fewer hormones than necessary, the metabolism slows down and, with it, cellular energy production: in such cases, CoQ10 can help support overall energy levels, counteracting the fatigue characteristic of this condition.
Inhyperthyroidism, the situation is the reverse: the accelerated metabolism uses up coenzyme Q10 more quickly than normal, and a deficiency can contribute to symptoms such as palpitations, heart fatigue and muscle weakness. In both cases, maintaining adequate levels of Q10 appears to offer useful support, although management of the underlying cause remains the responsibility of the treating doctor.
Interactions between coenzyme Q10 and levothyroxine
Levothyroxine (marketed in France under names such as Levothyrox) is the most commonly used medication for the replacement therapy of hypothyroidism: it is a synthetic form of the thyroid hormone T4.
The good news is that, to date, no direct drug interactions have been reported between coenzyme Q10 and levothyroxine: both substances can be taken at the same time without one reducing the effectiveness of the other.
That said, it is still bestto space out the intake of the two products by at least two hours, simply to ensure optimal absorption of each and to avoid any competition in the gut. If you are currently undergoing thyroid treatment, always discuss this with your doctor before starting any supplementation.
Effects on liver function
The liver is the organ that converts the hormone T4 into T3, the active form used by cells; it therefore plays a central role in regulating thyroid function. Coenzyme Q10 is also metabolised in the liver, and its antioxidant action helps to protect liver cells from oxidative stress, thereby supporting the liver’s daily function.
A healthy liver is an important ally for people managing a thyroid condition, precisely because this is where much of the hormonal conversion takes place. To explore the topic of liver health in greater depth, the section dedicated to liver and kidney wellbeing offers targeted solutions.
Managing basal metabolism
Basal metabolism—that is, the amount of energy the body consumes at rest—is largely regulated by thyroid hormones. When the thyroid is not functioning properly, the basal metabolic rate can increase or decrease significantly, affecting body weight, body temperature and overall energy levels.
Coenzyme Q10, by supporting mitochondrial energy production at a cellular level, can help maintain a more stable and efficient metabolism, particularly during phases when thyroid treatment is still being fine-tuned by the doctor.
Other areas of application for the supplement
Beyond its link to the thyroid, coenzyme Q10 is useful in many other contexts relating to the body’s general wellbeing, thanks to its energy-boosting and antioxidant action, which affects several bodily systems simultaneously.
Support for cholesterol and fibromyalgia
People taking statins to control their cholesterol often experience a reduction in their Q10 levels, as these medicines act on the same metabolic pathway that produces both cholesterol and coenzyme Q10. Coenzyme Q10 supplementation can therefore help to compensate for this induced deficiency and alleviate treatment-related symptoms such as muscle pain and fatigue. For those seeking a more comprehensive strategy for managing cholesterol levels, the guide to the best supplements for controlling cholesterol offers a useful overview.
In fibromyalgia, a condition characterised by widespread pain and chronic fatigue, some studies have found lower levels of Q10 in patients, with reported improvements in symptoms following periods of regular supplementation. These findings have yet to be confirmed, and any course of action should be discussed with the doctor responsible for your care.
Does coenzyme Q10 cause weight gain?
Coenzyme Q10 does not cause weight gain. It does not provide any significant calories and has no direct effect on the accumulation of body fat.
On the contrary, by supporting cellular energy production, it can promote greater vitality throughout the day and an improved ability to engage in physical activity – factors which, over time, help to maintain a healthy body weight.
People who notice weight fluctuations whilst undergoing thyroid treatment should attribute these primarily to ongoing hormonal imbalances, rather than to any intake of Q10.
Contraindications of coenzyme Q10 for the thyroid
Coenzyme Q10 is generally well tolerated and safe, including for people with thyroid problems. However, as with any supplement, there are situations where it is best to proceed with caution and under medical supervision, particularly when other medication is being taken.
People who should avoid taking it
People taking anticoagulant medicines such as warfarin must inform their doctor before starting supplementation, as Q10 has a chemical structure similar to that of vitamin K and may interfere with the medicine’s effect. People suffering fromlow blood pressure should monitor their blood pressure levels, as CoQ10 may have a slight blood-pressure-lowering effect.
During pregnancy and whilst breastfeeding, it is best to consult your doctor before starting, as is the case for people undergoing chemotherapy, as the antioxidant action may interact with certain cancer drugs. For people with complex thyroid conditions, the advice is always to discuss this with their endocrinologist before adding any supplement to their routine.
How long and when to take it
Coenzyme Q10 must be taken regularly to produce noticeable results: the first effects are generally observed after four to eight weeks of regular use. The best time to take it is with a meal containing some fat, as it is a fat-soluble substance and this aids its absorption in the gut. Those who use it as ongoing support – for example, in the case of a chronic thyroid condition – may continue taking it over the long term without any specific time limit, provided they adhere to the correct dosage and are monitored by their GP.
Frequently Asked Questions
Is coenzyme Q10 good for the thyroid?
Coenzyme Q10 acts on the thyroid indirectly, by supporting the body in managing the energy this gland needs to function properly. It does not act directly on the production of thyroid hormones, but its antioxidant action and support for mitochondrial function can help to combat the fatigue and cellular stress that often accompany thyroid conditions, whether these involve overactive or underactive thyroid function.
Does coenzyme Q10 raise blood pressure?
This is a common question, but the opposite is actually observed: several studies indicate that Q10 tends to have a slight blood pressure-lowering effect, rather than raising it. This generally makes it well tolerated by people with high blood pressure, whilst it requires greater caution in those who already have low blood pressure or who are taking specific medication to lower it — a situation in which regular monitoring of blood pressure levels with their doctor is advisable.
Which vitamin is good for the thyroid?
It depends on which function you wish to support: vitamin D is one of the most important, as a deficiency is frequently associated with thyroid dysfunction, whilst B vitamins contribute to the gland’s overall energy metabolism. Minerals such asiodine, selenium and zinc also play a direct role in the production of thyroid hormones. To better understand how other common supplements affect the thyroid, the article on ‘Collagen and the Thyroid: Links and Contraindications’ offers a comprehensive and useful overview to help you make informed choices.
What is the best coenzyme Q10 supplement?
This depends mainly on the quality of the formulation and its ability to be absorbed by the body. Q10 is a molecule that struggles to cross the intestinal wall in its pure form: formulations designed to improve bioavailability therefore generally deliver more tangible results at the same dosage. It is worth choosing products with a clean list of ingredients, free from unnecessary additives, and with clear information on the dosage per capsule, so that you can tailor your intake to your specific needs. The products available at the Tsunami store meet this requirement perfectly.
When is the best time to take coenzyme Q10?
This depends on your daily routine, but the general rule is to always take it with a main meal containing a small amount of fat, to aid absorption. Many people prefer to take it at breakfast or lunch, to benefit from its energy-boosting effects during the busiest part of the day, whilst those who also use it to aid sleep or night-time recovery may wish to take it in the evening. To explore the relationship between natural substances and thyroid function in greater depth, the guide on bromelain and the thyroid offers an interesting comparison with another substance often considered in this context.
