The invention relates to novel uses of imidazo[1,2,4]triazinones for producing a medicament for the treatment and/or prophylaxis of coronary cardiopathy, heart failure, pulmonary hypertension, bladder complaints, prostatic hyperplasia, nitrate-induced tolerance, or diseases of the eye, such as glaucoma, for the treatment or prophylaxis of central, retinal or posterior ciliary artery occlusion, central retinal vein occlusion, optical neuropathy, such as anterior ischaemic optical neuropathy and glaucomatous optical neuropathy, in addition to macular degeneration, diabetes, in particular diabetic gastroparesis, for the treatment of dysperistalsis of the stomach and oesophagus, female infertility, premature contractions, pre-eclampsia, alopecia, psoriasis associated with renal syndrome, cystic fibrosis, cancer and for improving cognition, powers of concentration, learning skills or hypermnesia, in particular if the disorder is a symptom of dementia.