Very fast heart rate; For people with heart problems: Levothyroxine can increase your risk of serious heart problems, such as heart attack, abnormal heart rhythm, and heart failure
Secondary hypothyroidism is when the problem is in the pituitary gland, and there is a decrease in the production of thyroid-stimulating hormone (TSH)
Synthroid (levothyroxine) is the most common drug used for hypothyroidism
There are exceptions
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People with hypothyroidism may also have a slower heart rate, or bradycardia
Your doctor will most likely prescribe levothyroxine, a thyroid hormone medicine that is the same as T4, one Slowed heart rate, also called bradycardia
Most babies born without a thyroid gland or with a gland that doesn't work correctly don't have symptoms right away
Standing up too quickly can bring about dizziness and cause your heart rate to increase
Introduction Hypothyroidism may be associated with changes in the autonomic regulation of the cardiovascular system, which may have clinical implications