Varies: Some adhd pts have difficulty organizing themselves to go to sleep. These patients benefit from a small dose of stimulant at bedtime. Many times taking it at bedtime will affect sleep or sleep persistence. This is something to discuss with your doctor.
Answered 4/14/2016
5.8k views
Ritalin (methylphenidate): If high dose or if you took another dose earlier in the day, insomnia is likely. Advice not to take stimulants later than 4 P.M., unless you work evenings & sleep in daytime.
Answered 9/28/2016
5.7k views
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