<prompt> Mechanism of MianserinInhibitis α - adrenergic, H1 some type of 5 - HT receptorsInhibits α - adrenergic, H2 some type of 5-HT receptorsInhibitis β - adrenergic, H1 some type of 5 - HT receptorsInhibits α adrenergic H1 receptors.  <response>: Mianserin is an atypical antidepressant that acts by inhibiting α - adrenergic, H1 certain serotonin receptors. 