Allergic to Pre-Natal Vitamins?!!

Has anyone experienced an allergic reaction to prenatal vitamins? I started taking the pre pregnancy prenatal gummy vitamins and started getting an eczema like rash on my wrist and on my back. I stopped taking them and the rash is going away... Any thoughts? I bought an organic prenatal vitamin in tablets to try and I'm hoping I won't react to that. If anyone has experienced a reaction, what did you do? Please help!