<prompt> Diuretic causing gynaecomastia is -LubiprostoneSpironolactoneCimetidineChlorthalidone  <response>: Ans. is b i.e., Spironolactone Drugs causing gynecomastia Calcium channel antagonist Isoniazide Reserpine Clomiphene Ketoconazole Digitalis Methyldopa Estrogens Testosterone Flutamide Phenytoin Cimetidine Ethionamide Griseofulvin Goserelin Griseofulvin Spironolactone Cyprotenrone acetate Note: Cimetidine also causes gynaecomastia, but it is not a diuretic. 