timing of progesterone and synthroid

[Mccrae]

is it safe to take progesterone within two hours of synthroid

[Buddy195 Administrator]

My endocrinologist told me this was ok as there was no noticeable interaction between the hormones. I tested my thyroid levels (TSH, FT3 and FT4) both before and 8 weeks after starting progesterone and my levels were the same.

More recently, I have found it better to take progesterone in a night (it seems to aid my sleep) and Levothyroxine on a morning (alongside oestrogel). It is very much trial and error to find what works best for you.

Regarding information about HRT, it may be useful to have a look at Dr Louise Newson’s free Balance App, as I find it really useful having up to date research articles.

healthunlocked.com/redirect...

[radd]

Progesterone does not cause increased binding so yes, you can take thyroid hormones and progesterone together.

(The doubts came about when women were taking oral oestrogen that risks a higher proportion of thyroid hormones becoming bound to transporters, but now a days transdermal oestrogen, patches and pessaries are used that should not induce extra binding unless taken in very high doses when a large amount may be recycled through the liver.)