Benzo[b]thiophene-2-carboximidamide, 4-fluoro-N-hydroxy-5,6-dimethoxy- is an orally available compound suitable for the treatment of heart failure without inducing nausea, vomiting and restlessness.
15 mg/kg of compound produces 60% increase in left ventricular contractility in anaesthetized cat. An oral dose of compound (25 mg/kg) could produce marked increases in left ventricular contractility (45%) in conscious dog[1].
[1]. EP0482717A1