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What Causes Constant Drowsiness While On Synthroid For Hypothyroidism?

I have Lo-Thyroid- Hypothroidism......Am on 25 mg. of Synthroid daily on an empty stomach.
My problem is this; I am "sleepy" all the time......close my eyes for a minute and am asleep. (Have always been a very busy person before taking the medication) WHY? am I having this reaction ??

posted on Sat, 24 Jan 2015

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

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