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Tricyclic antidepressants (TCAs) are a class of medications that are used primarily as antidepressants. TCAs were discovered in the early 1950s and were marketed later in the decade. [ 1 ] They are named after their chemical structure , which contains three rings of atoms .
A drug test (also often toxicology screen or tox screen) is a technical analysis of a biological specimen, ... cannabis, barbiturates and tricyclic antidepressants. ...
TCA overdose may occur by accident or purposefully in an attempt to cause death. [2] The toxic dose depends on the specific TCA. [2] Most are non-toxic at less than 5 mg/kg except for desipramine, nortriptyline, and trimipramine, which are generally non-toxic at less than 2.5 mg/kg. [5] [2] In small children one or two pills can be fatal. [6]
Drugs that contain four rings not all fused together but are sometimes still classified as TeCAs include: Amoxapine (Asendin) – often classified as a TCA and grouped with the secondary amines Quetiapine (Seroquel) - an atypical antipsychotic sometimes used as an adjunct antidepressant
Desipramine, sold under the brand name Norpramin among others, is a tricyclic antidepressant (TCA) used in the treatment of depression. [8] It acts as a relatively selective norepinephrine reuptake inhibitor, though it does also have other activities such as weak serotonin reuptake inhibitory, α 1-blocking, antihistamine, and anticholinergic effects.
The therapeutic effects of protriptyline, like other antidepressants, appear slowly. Maximum benefit is often not evident for at least two weeks after starting the drug. [7] Protriptyline is a TCA. [5] It was thought that TCAs work by inhibiting the reuptake of the neurotransmitters norepinephrine and serotonin by neurons. [5]
Enzyme multiplied immunoassay technique (EMIT) is a common method for qualitative and quantitative determination of therapeutic and recreational drugs and certain proteins in serum and urine. [1] It is an immunoassay in which a drug or metabolite in the sample competes with a drug/metabolite labelled with an enzyme, to bind to an antibody. The ...
Reagent testing is one of the processes used to identify substances contained within a pill, usually illicit substances. With the increased prevalence of drugs being available in their pure forms, the terms "drug checking" or "pill testing" [1] may also be used, although these terms usually refer to testing with a wider variety of techniques covered by drug checking.
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