I had my thyroid radiated a few years back! Have started reacting to levothyroxine 75 mg just received! It's like my head feels like it's going to blow off and I get an instant major sinus infection on my whole face and mouth within 30 minutes of taking it! The brand name is Lannett..
I've tried armor and synthroid in the past with reactions! How could I be reacting now after all this time?