The invention provides a compressed pharmaceutical composition comprising - polyethylene glycol of molecular weight from 2000 to 4500, wherein the polyethylene glycol makes up from 80 to 99.5% by weight of the composition, and - one or more electrolytes. The compressed pharmaceutical composition of the invention comprising polyethylene glycol has been found to have a more agreeable taste and a more agreeable mouthfeel than previously proposed liquid or dry powder or granular compositions.