Active substance concentrate with formoterol, suitable for storage

Active substance concentrate suitable for storage, containing formoterol as active substance, characterised in that formoterol is present as a suspension in water in a concentration of between about 250 mg/ml and about 350 mg/ml and in that the active substance concentrate is adjusted to a pH of about 4.5 to about 5.5 and is in the form of a pharmacologically acceptable salt in an amount such that the formoterol is dissolved to an extent of less than about 0.5% (w/w).

Formulation of a solution for inhalation therapy, containing a solvent mixture of ethanol/water which is adjusted to a pH of about 4.5 to about 5.5, dissolved formoterol in a concentration of about 0.9 to about 1.5 mg/ml based on formoterol, a preservative in a pharmacologically acceptable amount and Na-EDTA in a pharmacologically acceptable amount.