<prompt> Drugs acting on dopamine receptors are all exceptDopamineFenoldopamDobutamineHaloperidol  <response>: -Dopamine It stimulates 3 receptors Receptors Dose of Dopamine for stimulation D1 2 mgKgmin b1 2-10 mgKgmin a1 10 mgKgmin -Fenoldopam is dopamine agonist -D1 Used in hypeensive emergency -Dobutamine Does not act on dopamine receptors Mainly act on beta 1 Used in CHF -Haloperidol - typical antipsychotic with D2 blocking action 