According to the present invention there is provided an immediate release pharmaceutical formulation comprising, as active ingredient, a compound of formula (I): wherein R1 represents C1-2 alkyl substituted by one or more fluoro substituents; R2 represents hydrogen, hydroxy, methoxy or ethoxy; and n represents 0, 1 or 2; or a pharmaceutically acceptable salt thereof; and a pharmaceutically acceptable diluent or carrier; provided that when the active ingredient is other than in the form of a salt the formulation does not solely contain: a solution of one active ingredient and water, a solution of one active ingredient and dimethylsulphoxide; or a solution of one active ingredient in a mixture of ethanol:PEG 660 12-hydroxy stearate:water 5:5:90; such formulations being of use for the treatment of a cardiovascular disorder.