My doctor said I have hypothyroidism, but cannot take Levothyroxine. I am allergic to shellfish.
Can I take Levothyroxine if I'm allergic to iodine, such as in shellfish?
Question posted by Anne Francis on 16 Aug 2014
Last updated on 30 April 2019 by allergyqueen
Levothyroxine, Synthroid, etc., replace iodine in the underactive thyroid gland. Could it be that hypothyroid meds are synthetic in nature, and would not be a problem for me? Anyway, I broke out in a nasty case of hives, just like I would if I ever were to eat shrimp again.
It is likely you experienced hives as a result of taking levothyroxine which likely was due to the povidone in the drugs inert chemicals. This is the iodine that someone listed but didn't recognize as such. That being said most allergists argue that there is not a correlation between iodine and shellfish. They believe it's a protein in the fish muscle that is the allergen. That being said, this individuals reaction is rather suspect.
There is nothing in the literature that says its contraindicated if you're allergic to shellfish. And there are other meds for hypothyroidism too. I'd advise seeing an endocrinologist. They are the specialists for this.
So your Dr. diagnosed your condition, he / she prescribed Levothyroxine, knowing you are allergic to iodine (shellfish) and can not take it, where is the question ?
This med does not contain iodine as far as I know the inactive ingredients are:
sodium lauryl sulfate
D&C Yellow No. 10
FD&C Yellow No. 6
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