Hey Doc,
I had papillary cancer about 6 years ago. I just switched from synthroid to levothyroxine about a week ago, and now I'm itching like crazy! My arms and legs mostly. It's unbelievable. Is their enough of a difference between the two drugs to cause such side affects? Please help! I'm itching up a storm! And switching to levothyroxine is the ONLY thing that I have changed! Thanks!