Am on thyroid med.for 15 years was high .012 dr request to stop med, of .200 mcg for 3 day am on the 4 day fill better what happen if quit taking it.?

Would not stop.: Holding the thyroxine (i assume that is the med) for a few days will lower your levels a little bit and that may well be why you feel better. If you stop it completely, depending on what your original thyroid dysfunction is, your levels may become very low. One can hold the thyroxine for a few days, to washout the excess rapidly, and restart at a lower dose, to maintain normal levels.