A member asked:

Synthroid (thyroxine) and estrogen interaction; does this cause weight gain?

2 doctors weighed in across 2 answers

No: Being on estrogen may cause you to need more synthroid, (thyroxine) but if your thyroid level is normal, it makes no difference whether you are on estrogen or not.

Answered 7/12/2013

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Dr. Heidi Fowler answered

Specializes in Psychiatry

Interactions: You can use a drug interaction checker whenever you have questions about drug-drug interactions or drug - food interactions. Here is one option (Drugs.Com): https://www.drugs.com/drug_interactions.php Your pharmacist is also an excellent source of information

Answered 11/11/2018

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