Phase 2 Study IV QUZYTTIR™ (Cetirizine Hydrochloride Injection) vs V Diphenhydramine

This will be a randomized, double-blind exploratory study of IV cetirizine HCl 10 mg/mL versus IV diphenhydramine 50 mg/mL in approximately 34 patients who require premedication for hypersensitivity infusion reactions associated with an anti-CD20 such as Rituxan® (rituximab) or Paclitaxel. The objectives and purpose of the study will be described to patients presenting at the participating infusion centers. The patients will be randomized to receive either IV cetirizine HCl or IV diphenhydramine.