I believe that you could easily be feeling some changes after one week on Cytomel. If your feeling of relief is in fact due to the hormone, then I would also expect a greater improvement. Moreover, as the hormone is largely protein bound (i.e. soaked up by sponge-like proteins in the blood plasma, providing moderation in concentration changes, but also reserves after the fact), the effects would relatively long-lasting.

I'm happy for you.

Lar