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  • Neurotransmitter Regulation

Antidepressant drugs work by regulating the levels of neurotransmitters, such as serotonin and norepinephrine, which play a key role in mood regulation.

These medications aim to relieve symptoms such as persistent sadness, loss of interest, and changes in sleep and appetite patterns.

  • Alleviation of Symptoms

Antidepressants may take several weeks to exert their full effect, requiring consistent and patient use under the guidance of a healthcare professional.

  • Not Instant Relief

Antidepressants are medications designed to alleviate symptoms of depression and other mood disorders by influencing neurotransmitter levels in the brain.

What is an Antidepressant?

Antidepressants drugs are primarily used to treat various mental health conditions, including

What Are Antidepressants Used For?

Major Depressive Disorder (MDD)
Generalized Anxiety Disorder (GAD)
Panic Disorder
Obsessive-Compulsive Disorder (OCD)
Social Anxiety Disorder (SAD)
Post-Traumatic Stress Disorder (PTSD)
Chronic Pain
Bipolar Disorder
Premenstrual Dysphoric Disorder (PMDD)
Eating Disorders (e.g., Bulimia Nervosa)
Attention-Deficit/Hyperactivity Disorder (ADHD)
Sleep Disorders (e.g., Insomnia)

Lists of Antidepressants

Selective Serotonin Reuptake Inhibitors (SSRIs)
Selective Serotonin Reuptake Inhibitors (SSRIs)
Serotonin-Norepinephrine Reuptake Inhibitors (SNRIs)
Serotonin-Norepinephrine Reuptake Inhibitors (SNRIs)
Tricyclic Antidepressants
Tricyclic Antidepressants
Monoamine Oxidase Inhibitors (MAOIs)
Monoamine Oxidase Inhibitors (MAOIs)
Atypical Antidepressants
Atypical Antidepressants

Fluoxetine (Prozac), Paroxetine (Paxil), Sertraline (Zoloft), Citalopram (Celexa), and Escitalopram (Lexapro).

  • Potential sexual dysfunction.

  • Initial worsening of anxiety.

  • Withdrawal symptoms if suddenly stopped.

  • Relatively safe even if taken in an overdose.

  • Less sedating than older antidepressant drugs.

  • Fewer side effects.

Mechanism of Action

SSRIs inhibit serotonin reuptake pumps, amplifying the serotonin signal in neural synapses.

Depression, panic disorders, OCD, PTSD, social anxiety disorder, and premenstrual dysphoric disorder.


Selective Serotonin Reuptake Inhibitors (SSRIs)

Mechanism of Action

Blocks the reuptake of both serotonin and norepinephrine, elevating their amounts.


Depression, anxiety disorders, chronic pain, and fibromyalgia.

Norepinephrine Reuptake Inhibitors (SNRIs)

  • Possible elevated blood pressure.

  • Increased heart rate.

  • Withdrawal symptoms.

  • Treats a broad spectrum of depressive and anxiety symptoms.

  • Some SNRIs are indicated for pain syndromes.