Hi, I Am Currently On Antihistamines For Ultucaria Which I

Hi, i am currently on antihistamines for ultucaria which i have had for over 2 months. I stopped taking prednisone for it 2 weeks ago and wanted to make sure there was no danger in taking duromine with antihistamines which I'm currently on. I still have slight ultucaria which is managed by the antihistamines and no longer need the prednisone. Thanks for your help.