The women's One-A-Day vitamins made me nauseous or vomit every time I took them. I tried taking them for a week, stopped because I was concerned they were making me sick, and tried a second time just to make sure it was the vitamin that was making me sick. The nausea/vomiting returned, so it seems to be correlated with taking the vitamin. I've tried several other brands of multivitamins and not had this effect, so I am just going to throw the remainder of this bottle away.