The length of the oral supplementation period was also discussed and the CHMP concluded that 3 weeks is the most appropriate length, leading neither to an overdose at the end of the oral supplementation period in those patients who have a relatively early release, nor to clinically relevant ‘ underdosing’ in patients for whom the main release starts from 4 weeks onwards only, given the relatively long half-life of the active moiety following oral risperidone.