When before i can expect to feel results from my new thyroid meds?

Depends on level: The skillful application of thyroid hormone starts low, and then gradually increases until perfection of symptom control and/or maximally therapeutic levels are achieved in blood tests. Because it takes a while to cautiously run the levels up, you may not originally feel any benefit. However, when you are on the perfect dosing, you should be able to feel the effect in 1 - 2 weeks at the most.

If you are: Taking the correct dose of brand name td4 replacement daily, you may experience some improvement in 1-2 weeks, but it takes a full 6 weeks for the medication to equilibrate in your system -- and the the dose needs to be adjusted if necessary. Once stable, it can take 6-12 more weeks for everything to feel back to normal. Things like hair regrowth can take even longer.