Sertraline
Sertraline is a selective serotonin reuptake inhibitor (SSRI) used primarily in the treatment of depression, anxiety disorders, and related psychiatric conditions. It is also used off-label in some somatic conditions like tinnitus or premature ejaculation.
Classification
- Drug class: Antidepressant – SSRI
- ATC code: N06AB06
Mechanism of Action
- Selectively inhibits the presynaptic reuptake of serotonin (5-HT) in the central nervous system.
- Increases extracellular serotonin levels → enhances serotonergic neurotransmission.
- Minimal effect on norepinephrine and dopamine reuptake.
Indications
- Major depressive disorder (MDD)
- Obsessive-compulsive disorder (OCD) – including pediatric patients
- Panic disorder
- Social anxiety disorder
- Post-traumatic stress disorder (PTSD)
- Premenstrual dysphoric disorder (PMDD)
- Off-label: tinnitus-related anxiety or distress
Dosage (Adults)
- Starting dose: 50 mg/day
- Titration: Increase by 50 mg every few weeks if tolerated
- Maximum: 200 mg/day
- Takes 2–4 weeks to observe therapeutic effect
Adverse Effects
- Common: Nausea, insomnia, headache, diarrhea, sexual dysfunction, dry mouth
- Less common: Anxiety, tremor, sweating, weight changes
- Serious: Suicidality in young adults, serotonin syndrome, hyponatremia (SIADH), QT prolongation (rare)
Contraindications
- Concomitant use with MAO inhibitors (risk of serotonin syndrome)
- Known hypersensitivity to sertraline
- Use with pimozide (QT risk)
Warnings and Precautions
- Monitor for suicidal ideation (especially in adolescents and young adults)
- Taper gradually when discontinuing to avoid withdrawal symptoms (e.g., dizziness, irritability, paresthesias)
- Caution in hepatic impairment – dose adjustment may be needed
Drug Interactions
- Serotonergic drugs: Risk of serotonin syndrome
- NSAIDs, anticoagulants: Increased bleeding risk
- CYP2D6 inhibitors/inducers: May affect metabolism
Clinical Notes
- Better tolerated than older antidepressants (e.g., TCAs, MAOIs)
- Often preferred in patients with comorbid anxiety
- Does not cause sedation or weight gain as frequently as some other SSRIs
Synonyms and Brand Names
- Brand names: Zoloft®, Serlain®, Altruline®
- Generic name: Sertraline hydrochloride