Extended-Release Medications

These medication dosage forms are called extended-release, sustained release, long-acting, or controlled release. Although the exact meaning of these terms differ in some respects, each of these terms implies a gradual release of medication over a long period time.

CD	Controlled-diffusion
CR	Controlled-release, continuous-release
CRT	Controlled-release tablet
LA	Long-acting
SA	Sustained-action
SR	Sustained-release, slow-relaese
TD	Time-delay
TR	Time-release
XL	Extra-long
XR	Extended-release