The invention provides a kind of suspending agent preparation of improvement, it is used to have hydrogen-metered dose inhaler of fluoro-alkane propellant, wherein improves part and is that control adds a spot of water.Opisana je unaprijeđena suspenzija formulacije za uporabu u inhalatorima s odmjerenom dozom koja sadrži hidro-fluoro-alkanski propelent, pri čemu je unaprjeđenje u dodavanju male količine vode.