lithium is excreted through the kidneys via urination.

If you drink less water you will have a higher concentration of lithium in your blood.

More water, more lithium leaving the body, kidneys stay health.

The body treats lithium like sodium, sodium intake can affect lithium levels.

lithium can also, like sodium cause you to retain water, weight gain.

I drink half a gallon a day to keep my urine clear and to prevent any lithium damage.