A member asked:

Does thyroid hormone replacement cause rapid heartbeat and shortness of breath?

5 doctors weighed in across 2 answers
Dr. Quang Nguyen answered

Specializes in Endocrinology

No: Only if you use too high of a dose or increase your replacement dose too quickly.

Answered 7/5/2012

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It can: It can if the dose is too great. Hypothyroidism, the reason for taking thyroid hormone replacement, is a well known cause of arrhythmias and shortness of breath.

Answered 7/8/2015

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