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Question:
Can taking CoQ10 affect my thyroid levels or interact with my thyroid medication?

Answer:
Having an overactive or underactive thyroid has been shown to affect levels of CoQ10 in the body. However, there doesn't appear to be research on whether CoQ10 supplementation affects thyroid hormone levels or thyroid medication. This is discussed in the "Cautions and Concerns" section of the CoQ10 and Ubiquinol Supplements Review, along with information about other potential drug interactions with CoQ10.

For information about drug interactions with thyroid medication, see the Thyroid Hormone article in the Drug Interactions section of the Encyclopedia.

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I take levothyroxine (Synthroid), a thyroid hormone to treat hypothyroidism. Are there supplements I should avoid, or be taking, due to this drug? >>



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This CL Answer initially posted on 7/25/2017.

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