The strength of Adderall IR (immediate-release) and Adderall XR (extended-release) is not directly comparable in a simple manner like mg-to-mg because they work differently in the body due to their different release mechanisms.
Adderall IR releases the medication all at once when you take the pill, leading to an immediate and intense effect that lasts for a shorter duration (typically around 4-6 hours). On the other hand, Adderall XR is designed to release the medication gradually over an extended period (around 10-12 hours), providing a more sustained and milder effect.
When comparing the dosages of Adderall IR and Adderall XR, a general guideline is that the extended-release version (Adderall XR) tends to have approximately double the duration of action as the immediate-release version (Adderall IR). For example, if you take 15mg of Adderall IR, you might expect its effects to last around 4-6 hours. To achieve a similar duration of action, you might need to take around 30mg of Adderall XR. However, this is a rough estimation, and individual responses may vary.
It's essential to understand that the appropriate dosage of stimulant medications like Adderall should always be determined and prescribed by a qualified healthcare professional based on a thorough evaluation of the individual's medical history, symptoms, and response to the medication. They will be able to tailor the treatment plan to suit the patient's specific needs while considering potential side effects and other factors that may impact the choice between Adderall IR and Adderall XR.