injections are intravenously administered singly or as a mixture with a general infusion liquid such as liquid glucose or an amino acid liquid further as necessary the injections are singly administered intra arterially intramuscularly intradermally subcutaneously or intraperitoneally the suppositories are intrarectally administered the amount of the compound of the present invention or a salt thereof to be incorporated into each of the above dosage unit form depends on the symptoms of the target patient or depends on the drug form however the amount per dosage unit form is generally preferably about 0 005 to 1 000 mg more preferably 1 to 800 mg further preferably 5 to 500 mg for oral agents about 0 001 to 500 mg more preferably 0 02 to 400 mg further preferably 1 to 250 mg for injections and about 0 01 to 1 000 mg more preferably 1 to 800 mg further preferably 5 to 500 mg for suppositories additionally the daily dose for an adult of the drug to be administered with the above dosage form is generally about 0 005 to 5 000 mg preferably 0 01 to 2 000 mg more preferably 10 to 1600 mg further preferably 20 to 800 mg although such doses depend on the symptom body weight age gender etc of the patient for each day the daily dose is preferably taken at one time.