While hubby was on 1400 mg, he also tasted Iodine constantly. No swollen glands, but definitely needed to cough more, and coughed up bromine. I called them bromine balls because he'd hack them up from deep in his lungs.
It's okay to be on 1500 mg for as long as you need and as long as you feel it's helping to reverse your original symptoms. Consider not going any higher. Just let your body work with this dose.