Taking Iodine by itself can cause more problems. The Iodine doctors recommend also taking the required co-supplements:

Co-supplements: The Key to Success on the Iodine Protocol

½ tsp Natural Celtic Salt AM daily, Himalayan Pink Salt, Redmonds Salt or Hawaiian black salt. If salt is pure white, it is unacceptable (minerals have been stripped out )

200+ mcg AM selenomethionine (L-selenomethionine recommended) 800 mcg Limit

400 mg Magnesium - PM best=glycinate, citrate or malate others are poorly absorbed - more may be needed - See this link - (Calcium will purge magnesium)

2,000+ mg Vitamin C - PM Sodium Ascorbate (easier on stomach) or Ascorbic Acid. Increase dosage to bowel tolerance: See This Link

ATP Cofactors caplet AM contains both 100mg B2 & 500mg non-flushing B3 in the correct ratio. Take 1/2 caplet up to 25mg of iodine, then ½ more for each additional 25mg iodine. (Max 3 daily per label) Can be discontinued after 1 yr, IF iodine sufficient & no deficiency or detox symptoms.

Complete details here:
https://docs.google.com/document/d/1IzFKo-r2-Nn8_z0KUrOhHdlanzSuhkuV3QO03XF6YTY/edit#

The selenium is essential when taking iodine for your thyroid,

Grizz

Coconut water! It has many electrolytes to replenish your sodium and carbohydrate stores which takes care of the fatigue and low energy. It's electrolyte concentration is naturally similar to that of sports drinks such as Gatorade. Natural= no side effects, no artificial dyes, no artificial sweeteners or refined sugars, no sodium chloride, just naturally occurring nutrients :)

The first thing i think of is sodium. Do you eat alot of salt? Eating a vegtable diet can really make you pee like a horse when the sodium levels goes lower.
Do you have any kidney dieses? diabetes? edema?

Brittle hair is a sign that the hair do not get propper nutrients most likly due to unclean blood. Do you do liver flushes? Liver Flushes can acutally couse these problem your describing until its all clean.

I am curious what type of water you drink?
I was drinking bottled water (without fluoride) but it was loaded with sodium, ridiculous! It happened after I drank 5 bottles in one day and the next day I was thirsty and swollen. Can you believe there is water out there being sold that does this to someone, sick if you ask me.

Have you done a parasite cleanse?
parasites are everywhere and I know you have the symptom first in Portland but I have heard that the desert sand is prone to carry more parasites. (I learned that from the wife of a War Veteran). parasites could possibly be a cause for dehydration.

Are you taking anything that could dehydrate you?
Right now I am taking diatomaceous earth which can be very dehydrating. I have to drink lots more water while taking this. So maybe there is something in your diet??

I have drank is True Nopal Cactus Water, this was really hydrating me. I drank tons of this stuff ... it helped, but now I am kind of tired of it and have switched to water with lemon.

Also... cold Watermelon has a way of hydrating that I can't explain, something about the coolness of it really works.

I hope some of this helps ... keep us updated.