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Cupertino, CA
A 31-year-old female asked:

Can 50mcg of synthroid (thyroxine) make thyroid nodules grow?

3 doctor answers6 doctors weighed in
Dr. Val Koganski
Internal Medicine 37 years experience
NO: Thyroid supplementation occasionally can help to shrink a nodule, and has been used to suppress the growth.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Samuel Freedman
Pediatrics 11 years experience
Thyroid modules: No - generally not. In fact synthroid (thyroxine) is sometimes given in hopes of reducing nodule size.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Quang Nguyen
Specializes in Endocrinology
No: Synthroid (thyroxine) does not cause thyroid nodules to grow. If you think your nodules/masses are growing, see your doctor for a repeat ultrasound to get the measurements. Often time, people thinks their nodules are growing but they are actually not, thus a repeat ultrasound could be used as a reassurance for you as well.
Created for people with ongoing healthcare needs but benefits everyone.

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Last updated May 3, 2018

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