Abstract: Novel pharmaceutical dosage forms provide for pulsatile delivery of d-threo-methylphenidate and a second CNS stimulant, i.e., release encapsulated drug in spaced apart “pulses.” The second CNS stimulant may be an analeptic agent or a psychostimulant, with analeptic agents preferred. The dosage forms may comprise capsules housing compressed tablets or drug-containing beads or particles, or may comprise a tablet with the first, second and optionally third dosage units each representing an integral and discrete segment thereof. Methods of treatment using the pharmaceutical dosage forms are provided as well.