Can Taking Coenzyme Q10 Cause Blood Clots?

Coenzyme Q10 is often taken as a supplement to improve heart health. But are there any risks involved, and can it cause blood clots? Read on to find out.

Deseré Davis
By Deseré Davis
Kirsty Mac Dougall
Edited by Kirsty Macdougall

Published August 8, 2022.

Coenzyme Q10, also commonly referred to as CoQ10, is often recommended for its ability to improve heart health. It’s also used to help prevent and treat cancer and lessen muscle fatigue, lung diseases, and skin damage by reducing oxidative damage.

However, Coenzyme Q10 increases the risk of developing blood clots due to its interactions with certain medications.

How Does Coenzyme Q10 Interact With Other Medications?

CoQ10 can interact with medication prescribed for blood thinning and make them less effective, according to research (1). These medications include warfarin and clopidogrel, which prevent blot clots from forming.

There are several other drugs that CoQ10 may interact with, such as chemotherapy drugs like doxorubicin and daunorubicin.

CoQ10 may also affect blood pressure medication. Patients who take medications such as metoprolol and diltiazem can potentially take lower dosages when supplemented with CoQ10. However, this should be done under careful monitoring by a medical practitioner, as there is a risk of developing low blood pressure.

Can Coenzyme Q10 Cause Blood Clots?

Yes, there is an increased risk of developing blood clots. It is generally believed that CoQ10 can make blood-thinning drugs less effective. This is because Coenzyme Q10 is chemically similar to vitamin K, which can ultimately lead to blood clots forming (2)(3).

In contrast, a small study found that CoQ10 helped prevent blood clot formation by improving energy production in the body’s cells. Another study showed that Coenzyme Q10 had no effect on blood thinners.

These mixed findings indicate that much more research is required to make any definitive conclusions.

Coenzyme Q10 Offers Benefits—But Use With Caution

Ubiquinol and ubiquinone, two forms of CoQ10, offer many benefits, especially in promoting good heart health by lowering blood pressure and reducing the chances of repeat heart attacks. However, making blood-thinning drugs less effective can be extremely dangerous and even fatal. As such, you should always consult your doctor before taking a CoQ10 supplement.