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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Does Synthroid Cause Dizziness?

Hi..I started taking tab synthroid 75mcg since last 17 days after my tsh reading was 93. Around 45 days back my tsh was 2.0.there was sudden increase in tsh within a span of 20 days. and since last 1 week, I have been experiencing dizziness. What can be the problem?
Thu, 10 Dec 2020
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General & Family Physician,  's  Response
Hi,

Synthroid contains the active drug levothyroxine which is used to treat hypothyroidism and certain type of thyroid cancer. A very serious allergic reaction to Synthroid is rare. However, get medical help right away if you notice any symptoms of a serious allergic reactions, including- rash, itching, swelling of face, tongue or throat, severe dizziness, trouble breathing etc.

Again, high TSH levels can mean your thyroid is not making enough thyroid hormones, a condition called hypothyroidism. Hypothyroidism may cause low blood pressure and decreased heart rate leading to lightheadedness, weakness, dizziness, lethargy and chills. So, do repeat your thyroid function tests and adjust your Synthroid dose according to your test results.

Take care. Hope I have answered your question. Let me know if I can assist you further.

Regards,
Dr. Zubayer Alam, General And Family Physician
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Does Synthroid Cause Dizziness?

Hi, Synthroid contains the active drug levothyroxine which is used to treat hypothyroidism and certain type of thyroid cancer. A very serious allergic reaction to Synthroid is rare. However, get medical help right away if you notice any symptoms of a serious allergic reactions, including- rash, itching, swelling of face, tongue or throat, severe dizziness, trouble breathing etc. Again, high TSH levels can mean your thyroid is not making enough thyroid hormones, a condition called hypothyroidism. Hypothyroidism may cause low blood pressure and decreased heart rate leading to lightheadedness, weakness, dizziness, lethargy and chills. So, do repeat your thyroid function tests and adjust your Synthroid dose according to your test results. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Zubayer Alam, General And Family Physician