Adderall XR (Extended Release) is a time released pill. Adderall IR (Imedeate Release), or is also known as Instant Release. Adderall IR - Initial Dose: 10 mg per day orally upon awakening. read more
Adderall IR is manufactured in tablet format, whereas Adderall XR is manufactured in the form of capsules. The capsules of the Adderall XR contain little beads, 50% of which are immediate-release (just like the “IR”) and 50% of which are delayed-release. read more
The effects are usually felt 30 minutes after and last between 4-6 hours. The pros to taking ir adderall is that it works quickly and may have a stronger effect however there is a high chance that the person will have a crash effect when the medication wears off. Xr adderall works by releasing the same dose of medication over a longer period of time. read more