I am wondering how the use of topical magnesium affects total magnesium levels in the body. Did you say above that total intake should be half the RDA or approx. 150-200 mg? (BTW, my bottles don't specify "elemental magnesium" values.) Does using magnesium lotion — or, for that matter, old-fashioned Epsom salts foot soaks — significantly raise total magnesium levels?

Thanks!