Propylhexedrine is an alpha-adrenergic agonist often used in nasal decongestant inhalers. It is used to give temporary relief for nasal congestion from colds, allergic rhinitis, or allergies. (en)
Propylhexidrine causes the norepinephrine, dopamine, and serotonin (5HT) transporters to reverse their direction of flow. This inversion leads to a release of these transmitters from the vesicles to the cytoplasm and from the cytoplasm to the synapse. It also antagonizes the action of VMAT2, causing the release of more neurotransmitters. (en)