Yup, that should have been Bromide not Bromine. Smart people I have read about took 1g of Ascorbic Acid and 1g of SSKI rain or shine...
Some 50 years ago Albert Szent Gyorgyi (the physician who discovered Vitamin C in 1928) wrote:
"When I was a medical student, iodine in the form of KI was the universal medicine. Nobody knew what it did, but it did something and did something good. We students used to sum up the situation in this little rhyme:
If ye don't know where, what and why Prescribe ye then K and I