Table 1.

Washout periods

Drug	Washout (days)
Methylphenidate	1
Amphetamine derivatives	3–5
Lisdexamfetamine dimesylate	2–3
Atomoxetine	1
Clonidine	3
Guanfacine	3–4
Bupropion	2–4
Modafinil	3–4