Select an antiallergic or immunologic agent and Discuss evidence and treatment guidelines to determine appropriate therapeutic options for a patient with allergic or immunologic disorders. Share the mechanism of action of this medication and hints for monitoring, side effects, and drug interactions, pregnancy considerations, including interactions with CAM. In addition, share a clinical trial that supports the use of this agent. Include the name of the medication in the subject line so that the medications can be followed. Include references using APA format.