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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Are there any effect of taking Tamoxifen with Neomercazole?

I take 20mg Tamoxifen daily - post breast cancer treatment. Diagnosed with hyperthyroidism last May and am on various doses of Neomercazole daily. At the moment on 30mg daily. Could they interact negatively with the Tamoxifen? My TSH has been only 0.02 for months but today is improved to 2.09. Yet I feel very tired. I am attending an endocrinologist but would value a second opinion.
Fri, 20 Jan 2017
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Endocrinologist 's  Response
Hi,

I have gone carefully through your concern. Neomercazole does not interact with Tamoxifen, but TSH level needs months to get back to normal levels after starting treatment. That is why to judge for the dose of Neomercazole, we check the FT4 and FT3 levels.

Hope i have answered your query. Let me know if I can assist you further.

Best wishes,
Dr. Mirjeta
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Are there any effect of taking Tamoxifen with Neomercazole?

Hi, I have gone carefully through your concern. Neomercazole does not interact with Tamoxifen, but TSH level needs months to get back to normal levels after starting treatment. That is why to judge for the dose of Neomercazole, we check the FT4 and FT3 levels. Hope i have answered your query. Let me know if I can assist you further. Best wishes, Dr. Mirjeta