Tetracyclic antidepressant
A tetracyclic antidepressant is an antidepressant drug from the tetracyclic drug group.The name tetracyclic is derived from the drug's molecular structure which consists of four ring like structures (compare tricyclic antidepressant).
Maprotiline (trade named Ludiomil®) is the only drug from this group widely used as an antidepressant medication.
