we call them GPs here too, and i think our measurements are the same -- we use mg instead of mcg; i only say mcg for the sake of convenience, since the majority of users are american ...
"just kept upping the dose" -- may i ask what drugs? it's just that, if you're depressed and taking anti-depressants, a little cytomel/tertroxine might do you good; i recently went to a psychiatrist whose specialty is neuropharmacology, and i could have fallen into his arms when he said that if your thyroid doesn't work, ADs don't work (you're new here, but my first endo, in april, i dubbed the endo-from-hell, because
fortunately he did all the right tests, but when i said i was depressed, said "hypoT doesn't cause depression -- you need a psychiatrist -- want the number of a guy?" HUH???... i was so angry

i could have spat nails; he didn't give me any
cytomel as a result of course ... the ignorance of the man!! didn't listen to me anyway -- ARRGGH!) ... so i fired him and got a new endo, with whom i'm quite pleased and it seems he has a rep for being brilliant, so ... i've fallen into some good luck after all!! ...
just might make you feel better all over, too (not the endo -- the
tertroxine

)...
there's a theory that because armour is dessicated pig thyroid, it can't be titrated exactly (who knows exactly how big those little piggies were!) and also, that it can carry viruses that have so far not yet crossed over into humans (hepatitis E is an example) ... now don't all you armour fans dump on me: i'monly quoting my neuropharmacologist here; many endos really think synthetic is better and have doubts about the natural stuff and if you feel better on armour, good on you;
i'd take it myself if i thought needed it BUT: that said, i'm doing quite well on synthroid/cytomel so pushka, don't feel cheated!!
glad you got your new GP ... some endos/GPs simply will NOT prescribe thyroid medication, even in the face of family history -- DUH!!!
so good for you for doing your own research -- it always makes me feel chuffed when a person makes that first post, sometimes in despair, and just gets so much SUPPORT that she gains enough confidence to INSIST on good medical care!!
BTW, if you don't mind, what part of oz are you from? (i know distressingly little about it and have never been there; i just wondered) ...
jb