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Antidepressant treatment tachyphylaxis (ADT tachyphylaxis), also known as Prozac poop-out, is a medical condition in which progressive or acute tolerance effects are seen following chronic administration of a drug. [1] It occurs more often with Selective serotonin reuptake inhibitors (SSRIs), which are the most commonly prescribed antidepressants.
Some people may need antidepressants for a relatively short period (like while grieving the loss of a loved one), or they might need medication long-term, if the depression is chronic.
Urine (43–65% after 24 hours) Its high degree of lipophilicity (fat solubility) allows it to be detected in the urine for up to 18 months. [ 5 ] [ 57 ] Less than 1% of the unchanged drug is excreted via the kidneys in the urine, in which 20–70% is excreted as conjugated or unconjugated metabolites, whereas 5–6% is excreted in feces.
Bupropion, formerly called amfebutamone, [16] and sold under the brand name Wellbutrin among others, is an atypical antidepressant that is US FDA-approved to treat major depressive disorder, seasonal affective disorder and to support smoking cessation.
SSRIs are modern antidepressants often used as a first-line treatment for major depressive disorder. Common SSRIs include Prozac (fluoxetine), Zoloft (sertraline) and Lexapro (escitalopram).
The pharmacology of antidepressants is not entirely clear.. The earliest and probably most widely accepted scientific theory of antidepressant action is the monoamine hypothesis (which can be traced back to the 1950s), which states that depression is due to an imbalance (most often a deficiency) of the monoamine neurotransmitters (namely serotonin, norepinephrine and dopamine). [1]
The symptoms and the treatment of an overdose are generally the same as for the other tricyclic antidepressants, including anticholinergic effects, serotonin syndrome and adverse cardiac effects. TCAs, particularly nortriptyline, have a relatively narrow therapeutic index , which increase the chance of an overdose (both accidental and intentional).
Mirtazapine, sold under the brand name Remeron among others, is an atypical tetracyclic antidepressant, and as such is used primarily to treat depression. [11] [12] Its effects may take up to four weeks but can also manifest as early as one to two weeks.
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