i already clued her in on the right selenium as what she said she was taking did not seem proper. something to take note of as well is that if selenium has been depleted for a long time those stores may need t be replenished like iodine. it is ok to take 400mcg with no problem as long as it is selenomethionine. for those with cancer i recommend double that until resolution is achieved then back down to 200-400mcg. when you have cancer you know right off you ran out of selenium a long time ago.