Mild to moderate essential ความดันโลิตสูง Initially 1 mg once daily,
may be increased to 2, 4, 8 or max of 16 mg once daily according to individual response at intervals of 1-2 wk. BPH with or without HTN Same as in HTN with max 8 mg once daily. Recommended dose for both indications: 2-4 mg once daily.