Question: How should I take zinc if it makes me nauseous?
As far as I know, there's no relationship between the nausea and zinc deficiency. I could be wrong, maybe there's research on it I haven't seen or it could be not researched but I don't think there's a connection. My guess would be that that is either related to her ionizing it faster in the GI tract than you, or something else related to her nausea impulse that might be nutritional, it might be genetic, it might be male/female.
You could test out whether a little bit of bone broth or orange juice, or what have you with it buffers that enough to stop the nausea, and if it doesn't, I would just try to take it with a phytate-free meal. And by a phytate-free meal, I mean, a meal that doesn't have any whole grains, nuts, seeds, or legumes.
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DISCLAIMER: I have a PhD in Nutritional Sciences and my expertise is in performing and evaluating nutritional research. I am not a medical doctor and nothing herein is medical advice.