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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes High Blood Pressure And Palpitations While Being On Levothyroxine?

I am on Levathyroxine, and have now had a second 3 day spell of very high blood pressure, palpitations, irritability and shortness of breath. Previously I ended up visiting the emergency dept. at hospital, who said my dose had been increased too rapidly. It stabilised, and I increased the dose (over 3 months) gradually to 0.50mg, then latterly to 0.75mg. After having the same (albeit not as severe) symptoms I reduced back down to 0.50mg, then later this week I continued to feel unwell, so this weekend I've reduced to 0.25mg. After 2 days of high blood pressure (155/109), I feel ok now. But I'm worried about the damage this is doing to my heart/increased risk of stroke? Been to various doctors and they are not listening?
posted on Fri, 14 Mar 2014
Twitter Tue, 28 Jun 2016 Answered on
Twitter Wed, 29 Jun 2016 Last reviewed on
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General & Family Physician,  's  Response
i can understand your worries. as your blood pressure was high only for few days , it is less likely to having significant damage to your heart or brain. your high blood presssure is likely due to inappropriate thyroxin dose . so consult your family physician or endocrinologist. they will arange TSH /T3/T4 for you. according to results they will decide appopriate thyroxin dose for you . when you taking that appopriate thyroxin dose your blood presssure will come down to normal values.
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What Causes High Blood Pressure And Palpitations While Being On Levothyroxine?

i can understand your worries. as your blood pressure was high only for few days , it is less likely to having significant damage to your heart or brain. your high blood presssure is likely due to inappropriate thyroxin dose . so consult your family physician or endocrinologist. they will arange TSH /T3/T4 for you. according to results they will decide appopriate thyroxin dose for you . when you taking that appopriate thyroxin dose your blood presssure will come down to normal values.