Low blood pressure In newborn babies it continues to be the preferred treatment for very low blood pressure. In children epinephrine or norepinephrine is generally preferred while in adults norepinephrine is generally preferred for very low blood pressure. In those with low blood volume, this should be corrected with intravenous fluids before<unk> is considered. Kidney function Low-dosage<unk> has been routinely used for the treatment and prevention of acute kidney injury. However, since 1999 a number of reviews have concluded that doses at such low levels are not effective and may sometimes be harmful. Administration Since the half-life of<unk> in plasma is short—approximately one minute in adults, two minutes in newborn babies and up to five minutes in preterm babies—it is usually given as a continuous intravenous drip rather than a single injection. Other A fluorinated form of L-DOPA known as fluorodopa is available for use in positron emission tomography to assess the function of the nigrostriatal pathway.
Dopamine 
Octopamine
Norepinephrine
Norepinephrine 
Catecholamine
Synephrine
Beta-Endorphin
Prolactin-releasing peptide