Labs and Medicine Question (Compounded vs ERFA)

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I got my most recent labs after being on ERFA for about 5 weeks.

FT4 1.41 (.82 - 1.77)

FT3 3.2 (2.0 - 4.4)

TSH <.006 (0.450 - 4.5)

Quite a change from my previous labs on Naturethroid (for about 3 months)

FT4 0.87 (.78 - 2.19)

FT3 3.51 (2.77 - 5.27)

TSH <.003 (.465 - 4.68)

My current doc would like to switch me to compounded natural thyroid (using same

porcine powder as Armour/Naturethroid, etc.). I asked at the pharmacy and they

said the filler they use is Avicil as the filler. Searching around online I

found it is microcrystaline cellulose, which some say causes the problems in the

new armour and also with Naturethroid.

I am wondering if it is worth switching to the compounded meds or if I should

just stay on the ERFA. I have both and Dr. is open to me finishing out ERFA if

I'd like. Or I could try the other for a while and see how I feel/check levels

to compare later. Does anyone have a comment about why I might do one or the

other? Do you think the Avicil could have been why I didn't do well on the

Naturthroid? (All of the comparisons are at the same dosage of medicine, though

I know ratios are slightly different with ERFA.)

Thanks,

Grace