NancyM,
Most times when a multi causes nausea it is likely to be the copper. Some new multi's now have NO COPPER. Women especially can have problems with high copper levels. Estrogen triggers ceruloplasmin which puts copper into your bloodstream. Copper levels go up when women get their period (because of estrogen going up) and a lot of women will have cravings for chocolate, or can have GI problems then. Too much copper will cause the GI problems including diarrhea, cramps, gas, bloating, etc., and many other symptoms too. But too little copper would cause the chocolate cravings. Dark chocolate is higher in copper than milk but both are good sources for copper.

You can have too much copper from BC pills (synthetic estrogen being stronger than natural estrogen), tap water (copper pipes), soda from fountain machines (copper tubes), booze, weed, cigs, other meds, recent pregnancy (high estrogen levels), stress depletes you of zinc, and vegetarian protein sources.

Zinc Status will tell you if you have too much copper. Zinc and copper balance one another. Zinc Status will cost less than $20 in a health food store and tells you immediately if you have a zinc deficiency (or too much copper). This test is a better indication of deficiency than a blood sample. Too much copper can have cause some serious health problems if not taken care of.