My taste did funny things. A few weeks after my treatment food tasted really funny. It was like an off taste with no flavor. It took a month or so to get better. Now I'm fine. O yeah, my vision got really blurry. Not sure why but that got better too. I have had no permanent side effects. The things I experience only lasted about a month. Now I feel fine..........though my thyroid levels are going a little crazy now.