antidepressant

n. medication used to relieve depression, stimulant

An antidepressant, is a psychiatric medication or other substance (nutrient or herb) used for alleviating depression or dysthymia ('milder' depression). Drug groups known as MAOIs, tricyclics and SSRIs are particularly associated with the term. These medications are now amongst the drugs most commonly prescribed by psychiatrists and general practitioners, and their effectiveness and adverse effects are the subject of many studies and competing claims. An example of an herbal remedy that is an antidepressant is St John's Wort. Nutrients that are antidepressants include phenylalanine, tyrosine, tryptophan, 5-Hydroxytryptophan, and choline.
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Antidepressant /an·ti·de·pres·sant/ preventing or relieving depression ; also, an agent that so acts. [more]Antidepressant - Community and Resources

Noun
1. any of a class of drugs used to treat depression; often have undesirable side effects
(synonym) antidepressant drug
(hypernym) medicine, medication, medicament, medicinal drug
(hyponym) monoamine oxidase inhibitor, MAOI

noun & adjective
(drug) used to treat depression