Will Taking A Benadryl Tablet Relieve Itching From A Suspected Sulfur Medication Allergy?

I am having an allergic reaction I think to the sulfur medication I am taking for sinus. I have some hives and itching in many places. I have Benadryl allergy tablets. Although I don't have sneezing, runny nose or watery eyes, will a tablet stop the itching?