The effects of Adderall start to work within 30 laps. In contrast, Vyvanse takes approximately Je to two hours to take effect.Forms and Posologie Adderall IR is available in tablets ranging from 5 to 30 milligrams (mg). Adderall XR is available in demi-douzaine different pondération ranging from 5mg to 30mg. Vyvanse is available in enveloppe and