Antihistamines: How long do I have to wait, after... - Thyroid UK

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Antihistamines

Obsdian profile image
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How long do I have to wait, after levo, to take antihistamines?

I had been taking them in the afternoon without an issue, but in these last 2-3 weeks that is too long to wait.

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Obsdian
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RedApple profile image
RedAppleAdministrator

I typically leave about half an hour after taking thyroid medication, but I only take OTC cetirizine. Not sure if stronger prescription antihistamines might need a longer time.

Obsdian profile image
Obsdian in reply toRedApple

That's what I have currently. I might end up asking the GP for something else though.

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