Salt loading - is there a limit?

This may sound like a silly question, I am new to supplementing with iodine. I have been doing 50mg in drop form for three days now. I can tell my eyesight is sharper as is my sense of smell and hearing.
I seem to be breaking out in a rash on my face- it's not acne, but red and blochy. I've noticed I am having a bar time driving. I swerve a lot.
I am doing salt loading after I take the Iodine first thing in the morning. I take Iodine on empty stomach, follow with 2 cups water and wait about 20 min before 1/2 tsp salt 16 oz water. I've done up to three salt loads back to back - my question is, can you over do it? I am concerned I will dehydrate myself. Once I salt load my headache ( I am assuming from detox) goes away in about 2 min. I feel like I could do more salt loads, but I am worried about the intake. Is there any literature you could throw my way? Thanks!
I am also taking about 5g vitamin c, selinium, magnesium, and vit b-12 Tweet