A method for increasing cardiotonic contractility in humans or other animals using a class of benzodiazinone-pyridazinone and hydroxy-pyrazolyl compounds and pharmaceutical compositions including the same.
This is a division of co-pending application Ser. No. 063,481, filed on Jun. 17, 1987, now U.S. Pat. No. 4,785,101, which is a division of application Ser. No. 800,986, filed on Nov. 22, 1985, now U.S. Pat. No. 4,725,686.
The present invention relates to pharmaceutical compositions of levosimendan comprising alginic acid for improving the stability of levosimendan in the compositions. Levosimendan is useful in the treatment of congestive heart failure.
The invention relates to compounds of formula (I) ##STR00001## wherein R.sup.1, R.sup.2 and m are as defined in the description, their use as medicament, pharmaceutical compositions containing them and a process for their preparation.