Coadministration is a term that describes the process of simultaneously administering two or more drugs to a patient. However, there are a variety of synonyms that can also be used to describe this process. These include combination therapy, concurrent administration, joint administration, simultaneous medication, and concomitant therapy. Additionally, there are several related phrases that can also be used to describe the process of co-administration, such as combination drug therapy, multi-therapy, and drug cocktails. These synonyms and related phrases can be useful when discussing the treatment options available to patients, and can help healthcare providers to communicate more effectively with each other and with their patients.