Hi - I was diagnosed (finally) in Aug 2013. Got up to 100 mcg of Levo by March 2014 and while I felt better I wasn't well. 'Crash and burn' happening 2-3 times per week rather than every day (and by that I mean having to have an afternoon nap because I was just so knackered on top of sleeping 9-10 hrs per night - pre illness 7.5-8 more than sufficient). The docs said it would take a year to get back to where I should be. By Sept 2014 I'd had no improvement whatsoever so I demanded NDT (privately) and got 1 grain; by end of Nov my T4 levels had dropped below normal again (my TSH does not elevate - I'm a 'weird' case which is the excuse for why it took over 7 years of symptoms and constant visits to the quacks before I was diagnosed) and they upped me to 1.5 grains NDT. It's taken a few months and I still have the odd bad day (about once per fortnight) but for the rest of the time I have no symptoms (intense cold/exhaustion/severe hormonal migraines/weight gain) and feel like I've dropped 40 years in age.
So, gone from having to have a 3-4 hour nap a few days per week to 1 hour gym workouts three times a week, started a low carb diet at the beginning of Feb (and appear to be slowly losing weight) plus generally feeling fab. All in a few months on NDT
Now just hoping the bald patches on my head will grow back but that might be too much to ask for! Sad I know but I noticed at least 8 hairs on my eyebrows about 4 weeks ago and got overjoyed (I completely lost them about 2 years into the 4 year period of being in an 'advanced' stage before I got diagnosed)
I have the DI102 gene snip plus a high family incidence of under active (90% of females over 35 in my family are being treated) and this might be why NDT works better for me but all I can say is take it (along with B complex and such like)