Suggest Cure For Hives

Is there a known reaction between ferrous gluconate and citalopram (celexa)? I was taking an iron pill, ran out, and in the meantime was put on citalopram. I just refilled my Rx for the ferrous gluconate on Wednesday. Thursday morning I started breaking out with little bumps...just a few. But by tonight I definitely have hives! What's more, I've narrowed it down to the iron but never had a problem before. The only difference is, I am taking it with citalopram now.