A limitation of molybdenum for treating nausea and vomiting

I know I talk up molybdenum constantly--well, actually only when "stomach bugs" are going around or someone reports on how it went after trying it out out. I would like to talk about other fun nutrition/biomedical things, too. But I need to tell you about a serious limitation of molybdenum. Here goes:

Molybdenum doesn't help alleviate nausea and vomiting if it is not ingested.

Having it sitting in a cupboard over the kitchen sink doesn't lead to it actually helping! Taking it nine days before the nausea hits doesn't seem to do it, either. My second-grader now knows these things.

This past Friday, she woke up in the wee hours with her stomach hurting. She lay in bed thinking she could control it with her mind. (Yes, because that totally works with nausea. ;) ) She also thought that she didn't want to wake up her mom to ask for molybdenum, bless her little heart. This is the same second grader who successfully used molybdenum in October to avoid vomiting from a stomach bug going around her classroom. She knows it can help her, but I guess she was too groggy to think clearly. Anyway, to end the story, she came to me around 4:00 a.m. with the news that she'd thrown up in her bed. We cleaned her up, and she required multiple doses of molybdenum because she threw up much of her first dose. She was done vomiting by around 6:00 a.m., but she was wiped out from the ordeal and spent most of Friday on the couch watching PBS Kids. This was a very different experience for her than the one back in October, where she took molybdenum soon after feeling her stomach hurt and never threw up at all.

I'm still open to the possibility that molybdenum is helping due to placebo effect and luck (in science, one must always be open to having their hypothesis disproven), but her contrasting experiences are another data point in favor of molybdenum's being genuinely effective at resolving biological causes of nausea and vomiting.

(Disclaimer: I do not prescribe the use of pharmaceutical drugs in any way. I am not a physician, and I reject out of hand any attempt to hold me liable for what boils down to a discussion of food. Any use of a molybdenum supplement should be prudent and guided by the tested tolerable upper intake levels for its usage (see http://lpi.oregonstate.edu/mic/minerals/molybdenum for those limits). Any use of an isolated molybdenum supplement during pregnancy should be under the direction of a medical professional as such supplements have apparently not been tested during pregnancy.)