How often should methylphenidate immediate-release be taken?

• A. Twice a day
• B. Once daily
• C. Every 8 hours
• D. Every 12 hours

Answer: (A)

Immediate-release methylphenidate lasts only a few hours, so dosing is typically split to cover daytime activities. A common approach is two doses per day—one in the morning and one around midday—so the medication supports morning and early afternoon functioning and the last dose wears off by bedtime to reduce sleep disturbance. Taking it only once daily leaves afternoon symptoms uncontrolled as the effect wears off. Dosing every 8 hours isn’t the standard pattern for this formulation and can complicate schedules and increase side effects, while dosing every 12 hours would leave a long gap in the afternoon. So, two doses a day best fits the usual IR regimen.