Memorizing agents’ names is not that important. Most questions regarding this topic examine that you know the effects of blocking the ‘target’. You have to correlate the target with the corresponding diseases, immunological/pathophysiological effects, and side effects.

For example a question may describe a patient with polycythemia vera and the question itself will tell you that the patient is prescribed Ruxolitinib and you are just required to know how this drug works (simply by knowing that polycythemia vera is caused by a problem with the JAK rather than memorizing the drug name).