The invention relates to a system for the oral administration of a solid to dementia sufferers comprising at least two devices, in which each device comprises an optionally transparent hollow article with a liquid inlet end and a liquid outlet end, wherein a solid and a liquid-permeable, optionally displaceable retention means are arranged in the interior of the hollow article in such a manner that the retention means prevents the solid from escaping from the interior of the hollow article via the liquid inlet end.