Why CoQ10 is not for everyone.
Summary Most CoQ10 side effects are mild, including nausea, skin rashes, and headaches, and are related to dosage. Coenzyme Q10 may also affect other medications so individuals should always discuss their treatment with a professional. Common CoQ10 Side Effects In most cases, individuals will not experience any side effects of CoQ10, even with prolonged usage. The most common side effects occur in people who take at least 100 mg of coenzyme Q10 on a daily basis. These include