The doctor increased my syntroid from 112 mcg to 125mcg. Is it normal to get headache from it?

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I was on syntroid 112mcg for 12 years. But my thyroid levels are off. So the doctor increased my syntroid to 125 mcg. Could it cause headache? Like migraine headache? Should I stop the meds. Or continue because I need for my thyroid to work right? 

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  • Posted

    Faith, can you post what your levels were, and are now? Your doctor must give them to you.

    How long have you been on the new dose, and what other symptoms do you have? Stopping the meds without talking to your doctor would not be a good idea as you obviously need them to feel normal.

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    • Posted

      Good morning Dave.

      I've been on syntroid 112mcg for 12 years and my levels where 1.5-2.0. For about a month ago my levels where 3.9. Which was boarder line for me. With those levels I had miscarriages.  That the doctor tested me this week and the levels where 4.1. So he put me on 125 mcg syntroid. I've started yesterday. And had some headache. Feeling anxious and down. But that's a normal feeling when the hormones are off. Lol. 

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  • Posted

    Faith,

    it’s unlikely that this slightly higher dose would have any effect so quickly. It typically takes days and more likely weeks. So I suggest you go with it for at least a month and see your doctor again if you feel the new dose is not good for you. That being said, that is a pretty small increase and I would be sceptical that it has caused The headaches.

    btw it’s spelled Synthroid” :-)

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    • Posted

      Thank you so much. And yes you are right. I will stick with it and see that is effective. 
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  • Posted

    Hi Faith, I had severe migraines while on Synthroid and levothyroxin. Worse on the Synthroid. 

    Synthroid contains acacia and several dyes that can trigger allergy tips symptoms that contribute to migraines. 

    I had migraines pretty much any time I switched anything while on the Levo. I switched manufacturers several times and switched to an NDT and an OTC. Every time I switched it was a nightmare.

    Then there’s the small change in dosage, which seems like it shouldn’t result in huge shifts. Keep in mind, (at least in the US) there’s a +/- 10% variation allowed in the medications from the label dose. Since you’ve increased your meds only about 10%, you shouldn’t be having a big reaction, as you (I assume) have been fine on this medication for over a decade, and have likely weathered dosage variations  without event. (I suspect this variation in label dose was one reason this medication was very difficult for me to get the correct dose.)

    Is there any chance your pharmacy switched you from a brand name to a generic? A change in manufacturer is a more likely cause if the migraines. 

    I think if you are getting migraines, and you can rule out cold night air, holiday bingin, and other possible causes, you have to consider the migraines are due to the increase in medication.

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