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Antidepressant Drugs: Overview

Antidepressant Drugs: Overview

Antidepressant drugs are a class of medications primarily used for treating various mood disorders, including major depression, anxiety disorders, and other related conditions. These medicines work by modulating the neurotransmitter balance within the brain, alleviating depressive symptoms. Antidepressants can be broadly categorized into several groups according to their mechanism of action and chemical structure: Selective Serotonin Reuptake Inhibitors (SSRIs), Serotonin-Norepinephrine...

Antidepressant Drugs: Tricyclics, SSRIs, and SNRIs

Antidepressant Drugs: Tricyclics, SSRIs, and SNRIs

Tricyclic Antidepressants (TCAs), including Desipramine (Norpramin), Imipramine (Tofranil), Clomipramine (Anafranil), and Amitriptyline (Elavil), inhibit serotonin and norepinephrine reuptake and also block other receptors. They are used for depression, pain conditions, and insomnia. Common adverse effects include anticholinergic effects, sedation, orthostatic hypotension, and weight gain. They have a narrow therapeutic window and so require plasma-level monitoring. Abrupt discontinuation can...

Antidepressant Drugs: MAOIs and Other Agents

Antidepressant Drugs: MAOIs and Other Agents

Atypical antidepressants, including bupropion (Wellbutrin), mirtazapine (Remeron), nefazodone (Serzone), trazodone (Desyrel), and vilazodone (Viibryd), offer unique mechanisms of action. Bupropion weakly inhibits dopamine and norepinephrine reuptake, aiding depression treatment and smoking cessation, with a low risk of sexual dysfunction. Mirtazapine enhances serotonin and norepinephrine neurotransmission, leading to sedation, increased appetite, and weight gain. As a result, it helps treat...

Drug Therapy

Drug Therapy

The advent of drug therapy has profoundly shaped modern mental health care, providing targeted treatments for a range of psychological disorders. Psychotherapeutic drugs, classified into antianxiety, antidepressant, and antipsychotic medications, address symptoms across anxiety disorders, mood disorders, and schizophrenia. While these medications have transformed patient outcomes, they require careful management due to their potential side effects and limitations.
Antianxiety Medications

Anxiolytic Drugs: Overview

Anxiolytic Drugs: Overview

Anxiolytic drugs are vital in managing anxiety disorders by effectively alleviating symptoms such as excessive fear, tachycardia, and tremors. There are several classes of anxiolytic medications, each with unique mechanisms of action and potential side effects.
Primary Types of Anxiolytic Drugs
1. Benzodiazepines:
Benzodiazepines bind to the GABA-A receptor in the brain, enhancing GABA's interaction. This action reduces neurotransmission, effectively blocking anxiety-associated limbic circuitry.

Anxiolytic Drugs: Benzodiazepines and Buspirone

Anxiolytic Drugs: Benzodiazepines and Buspirone

Benzodiazepines are a class of anxiolytic drugs known for their rapid efficacy and high therapeutic-to-lethal dose ratio, but with a potential risk of drug dependence. These drugs are lipophilic, allowing for rapid absorption after oral administration, eventually reaching the central nervous system (CNS). Once in the CNS, benzodiazepines bind to the allosteric site of the GABAA receptor. This binding enhances the inhibitory effects of the neurotransmitter GABA. By doing so, they prevent...

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Related Experiment Video

Updated: Jun 1, 2026

Network Pharmacology and Validation of the Antidepressant Mechanisms of Qiangzhifang in a Chronic Restraint Stress-induced Depression Rat Model

Network Pharmacology and Validation of the Antidepressant Mechanisms of Qiangzhifang in a Chronic Restraint Stress-induced Depression Rat Model

Published on: June 6, 2025

[Antidepressant drugs].

C Clayton Aguiar¹, Thiago R Castro, André F Carvalho

¹Serviço de Psiquiatria, Universidade de Fortaleza, Brasil.

Acta Medica Portuguesa

|June 16, 2011

Summary

This summary is machine-generated.

Depression significantly impacts quality of life, necessitating effective treatments. This review details antidepressant drugs, their neurobiology, and personalized therapy choices for better patient outcomes.

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The Forced Swim Test as a Model of Depressive-like Behavior

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Network Pharmacology and Validation of the Antidepressant Mechanisms of Qiangzhifang in a Chronic Restraint Stress-induced Depression Rat Model

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The Forced Swim Test as a Model of Depressive-like Behavior

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Published on: March 2, 2015

Area of Science:

Neuroscience
Pharmacology
Psychiatry

Context:

Depression is a major public health issue with significant social and personal consequences.
It affects all age groups, with higher prevalence in women aged 15-29.
Depression can worsen outcomes for other clinical conditions.

Purpose:

To review and describe major antidepressant drugs.
To correlate drug mechanisms with the neurobiology of depression.
To discuss pharmacologic and therapeutic characteristics of antidepressants.

Summary:

Antidepressant drugs are classified by chemical structure or neurotransmitter action.
Understanding drug pharmacokinetics is crucial for effective therapy.
Treatment choice depends on symptoms, patient age, and other medications.

Impact:

Personalized drug selection aims for optimal therapeutic response and symptom reduction.
Good patient adherence and minimal side effects are key treatment goals.
Effective pharmacotherapy can significantly improve the quality of life for patients and their families.