Combination therapy or
polytherapy is
therapy that uses more than one
medication or modality (versus
monotherapy, which is any therapy taken alone). Typically, these terms refer to using multiple therapies to treat a
single disease, and often all the therapies are pharmaceutical (although it can also involve non-medical therapy, such as the combination of medications and
talk therapy to treat depression). 'Pharmaceutical' combination therapy may be achieved by prescribing/administering separate drugs, or, where available,
dosage forms that contain more than one
active ingredient (such as fixed-dose combinations).