What happens if you take ritalin (methylphenidate) at night? can you still fall asleep.

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.

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.