DRUGS WHICH INTERACT WITH THYROXINE

[fiftyone]

My blood results show a much higher T4/greatly suppressed TSH than ever before on the thyroxine dose I have been taking for years. I have been using a steroidal nasal spray for three months prior to the test. Could this be responsible for the change?

[SeasideSusie Remembering]

fiftyone

It's possible. Why not Google "<name of steroid spray> + levothyroxine interactions" or "does <name of steroid spray> affect absorption of levothyroxine".

[SlowDragon Administrator]

Yes. Steroids can affect Thyroid and TSH

You probably need full Thyroid including FT3 and vitamin testing