HomeAnswersEndocrinologythyroid function testHow does thyroid function get affected by intake of Seroquel?

I am on low dose of Seroquel. Will it affect my normal thyroid function?

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The following is an actual conversation between an iCliniq user and a doctor that has been reviewed and published as a Premium Q&A.

Answered by

Dr. Shaikh Sadaf

Medically reviewed by

iCliniq medical review team

Published At October 12, 2019
Reviewed AtJune 7, 2023

Patient's Query

Hello doctor,

I am on a low dose of Seroquel, which suppressed my thyroid FT4 and, subsequently, my FT3 during these three years of recovery from Hashimoto’s disease. I have stopped Seroquel, and my exogenous administration of testosterone is reduced to half from 700 to 387. Do Seroquel increases the prolactin levels? My sugar levels drop quickly after meals, and I have low genetic TBG. If I increase my exogenous testosterone back to the previous level, will my TT3 level get lowered? I am on Propranolol and my last Seroquel dose of 25 mg. It was affecting my eye sight, so I stopped it, and my FT4 was always low after Hashimoto’s recovery.

Answered by Dr. Shaikh Sadaf

Hello,

Welcome to icliniq.com.

I understood your question, and the answer is:

An increase in testosterone dosage will not suppress T3 (triiodothyronine) levels. It will take some time to recover from the consequences due to the long term administration of Seroquel (Quetiapine). Propranolol can cause low testosterone levels, so no point in artificially increasing the testosterone.

Patient's Query

Thank you doctor,

I am having low genetic TBG. I had urine FT3 with blood and urine. My urine FT3 levels are higher. It has been such a crisis for me and ER. I was not on a high dose of Propranolol when I had the test. How much will 80 mg Propranolol reduce testosterone? I was on the Propranolol dose three days when that tests was done.

Answered by Dr. Shaikh Sadaf

Hello,

Welcome back to icliniq.com.

It could have been an adrenal crisis when you were in the ER (emergency room) due to low blood sugar. I cannot suggest what you are asking for as it has not been researched upon and mentioned in any journal or randomized control trial, and also it could produce deleterious effects.

Patient's Query

Thank you doctor,

1) Will exogenous testosterone lowers TBG?

2) Shall I get another thyroid panel test? Do you recommend any other test?

3) Will stopping Seroquel increase my insulin level? Will that calm down?

4) As I try to lower Propranolol, my blood sugar level drops again, and I got nervous weakness. Will they subside once the insulin levels are normal so I can get off Propranolol eventually?

Answered by Dr. Shaikh Sadaf

Hello,

Welcome back to icliniq.com.

1) Obesity, insulin resistance, hypothyroidism, nonalcoholic fatty liver disease, and androgenic steroids lower TBG and the reversal of these can increase it.

2) It will take 6 to 8 weeks to observe change in thyroid test result. No other tests necessary at the moment.

3) Seroquel can cause insulin resistance, and it will take some time for the withdrawal effects to settle down.

Please do not stop the medicines on your own. It could take a couple of months to a year for the symptoms to settle down.

Patient's Query

Thank you doctor,

Will the combined effect of increased cortisol and lowered testosterone cause feeling of more anxious?

Answered by Dr. Shaikh Sadaf

Hello,

Welcome back to icliniq.com.

Yes, the combined effect of increased cortisol and lowered testosterone will cause more anxiousness.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Dr. Shaikh Sadaf
Dr. Shaikh Sadaf

Endocrinology

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