How Long Does Methimazole Take To Be Effective Against Hyperthyroidism?

Posted on Sun, 30 Aug 2015

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Sun, 30 Aug 2015 Answered on

Mon, 21 Sep 2015 Last reviewed on

Question : Hello Dr Heijebu
I am the patient my husband was discussing with you s few weeks ago . I do have elevated free T3 and T4 with hyperthyroidism. Saw an Endocrinologist and was prescribed Methiazole ( could be spelled incorrectly) 2 tabs BID. Then I follow up with labs in October to see where I am at.
I still have nausea, occasional headaches, difficulty sleeping, feel tired very easily. I was told I will feel better in 2 weeks. I am also taking a BP tablet to lower my rapid pulse.
Thanks,
XXXX

Answered by Dr. Suresh Heijebu (6 hours later)

Brief Answer:
It takes 2-3 weeks for the drug action to manifest

Detailed Answer:
Hello, Madam.

I understand your concern.

Yes, absolutely your doctor is right.

It takes 2-3 weeks for the drug effect methimazole not manifest.

Keep a close monitoring of your blood pressure.

Rest of your symptoms will gradually diminish and you will start feeling better soon.Do not worry.

Take the drug as prescribed without fail.

Repeat tests in October and review with the same.

Post your further queries if any,

Thank you.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar