Conditions: Schizophrenia
Keywords: Schizophrenia iloperidone switch gradual switch immediate switch
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 501
Healthy volunteers: no

Brief summary:
Evaluate the clinical outcome of two switching strategies to iloperidone treatment in adult subjects with schizophrenia who require a change in their current antipsychotic treatment of risperidone, olanzapine, or aripiprazole due to suboptimal efficacy and/or safety/tolerability reasons.

Detailed description:

Arms:
arm 1: Participants taking risperidone, olanzapine or aripiprazole gradually decreased the dose they were taking: 50% of original dose on Day 1, 25% of original dose after the first week and the total discontinuation of the drug after the second week.

On Day 1 participants began taking iloperidone orally twice a day (bid) in the morning and in the evening beginning at a dose of 1 mg and increasing to 2 mg, 4 mg, 6 mg, 8 mg, 10 mg, and 12 mg bid on consecutive days over a 7-day period to achieve a total dose of 12-24 mg/day for 12 weeks. arm 2: Participants taking risperidone, olanzapine or aripiprazole discontinued the drug immediately.

On Day 1 participants began taking iloperidone orally twice a day (bid) in the morning and in the evening beginning at a dose of 1 mg and increasing to 2 mg, 4 mg, 6 mg, 8 mg, 10 mg, and 12 mg bid on consecutive days over a 7-day period to achieve a total dose of 12-24 mg/day for 12 weeks.

Interventions: intervention 1: iloperidone
Intervention descriptions: intervention 1: Iloperidone tablets supplied at doses of 1 mg, 2 mg, 4 mg, 6 mg, 8 mg, 10 mg and 12 mg to achieve a target dose of 12-24 mg/day for 12 weeks.

Protocol document: