pharmacotherapeutic

As a noun pharmacology

is (medicine) the science that studies the effects of chemical compounds on living animals, especially the science of the manufacture, use and effects of medicinal drugs.

As an adjective pharmacotherapeutic is

of or pertaining to pharmacotherapy.

As a noun pharmacotherapy

is (medicine) the use of pharmaceuticals to treat disease.

As an adjective pharmacotherapeutic is

of or pertaining to pharmacotherapy.

Pharmacotherapeutic is a coordinate term of chemotherapeutic.

As adjectives the difference between pharmacotherapeutic and chemotherapeutic

is that pharmacotherapeutic is of or pertaining to pharmacotherapy while chemotherapeutic is (medicine|oncology) of or having to do with chemotherapy.

As a noun chemotherapeutic is

(medicine|oncology) a chemical agent used in chemotherapy.