- - tetracyclic a. a class of antidepressants similar to the tricyclic antidepressants and also related to the phenothiazine antipsychotics; e.g., maprotiline.- triazolopyridine a. a class of antidepressants structurally and pharmacologically unrelated to other antidepressants; clinical effectiveness appears to be equivalent to the tricyclic antidepressants, but with less anticholinergic side effect s; e.g., trazodone.- tricyclic a. a chemical group of a. drugs that share a 3-ringed nucleus; e.g., amitriptyline, imipramine, desipramine, and nortriptyline.
* * *an·ti·de·pres·sant .ant-i-di-'pres-ənt, .an-.tī- also an·ti·de·pres·sive -'pres-iv adj used or tending to relieve or prevent psychic depressionantidepressant also antidepressive n an antidepressant drug called also energizer, psychic energizer, psychostimulant compare TRICYCLIC ANTIDEPRESSANT
* * *n.a drug that alleviates the symptoms of depression. The most widely prescribed antidepressants are a group of drugs with a basic chemical structure of three benzene rings, called tricyclic antidepressants, which include amitriptyline, doxepin, and imipramine. These drugs are useful in treating a variety of different depressive symptoms. Side-effects commonly include dry mouth, blurred vision, constipation, drowsiness, and difficulty in urination. Other antidepressants include the MAO inhibitor, which have more severe side-effects, and the serotonin-specific reuptake inhibitors (see SSRI), e.g. fluoxetine and fluvoxamine, which generally have less sedative effects than the tricyclic anti-depressants.
* * *an·ti·de·pres·sant (an″te-) (an″ti-de-presґənt) 1. preventing or relieving depression; stimulating the mood of a depressed patient. 2. an agent that prevents or relieves depression.
Medical dictionary. 2011.