Our admissions team is available now, 24/7
Psychiatric Medications Guide

Sertraline (Lustral)A widely used antidepressant: what it is prescribed for, what to expect, and how it differs from Cipralex

Reviewed by: Dr. Mahmoud El-Sawy Last updated: October 1, 2026 5 min read
The short answer

Sertraline, whose best-known brand name in Egypt is Lustral, is an antidepressant from the selective serotonin reuptake inhibitor (SSRI) group, prescribed for depression, obsessive-compulsive disorder, panic attacks, post-traumatic stress disorder, and social phobia. It takes several weeks to take effect, and its best-known side effects are nausea, diarrhea, headache, insomnia, and reduced sexual desire. It does not cause addiction, and it is often used during breastfeeding on the doctor's decision.

  • It is dispensed by prescription, and the doctor sets the dose and adjusts it gradually.
  • Avoid grapefruit juice during treatment.
  • It is not stopped suddenly, but reduced over weeks or months.

“I'm on Lustral and my friend is on Cipralex. Whose medication is stronger?” A frequent question, and the answer is that neither is “stronger” in absolute terms. Below is a detailed explanation of sertraline, then a fair comparison between it and Cipralex.

What is sertraline?

Sertraline is an active ingredient from the antidepressants of the selective serotonin reuptake inhibitor group, and its original brand name in Britain and Egypt is Lustral, made by Pfizer, and in the US Zoloft. Many local generics exist in Egypt, with well-known brand names including Modapex, Serlift, Sertral, and Sicerin. It works by slowing serotonin reuptake, so the regulation of mood, fear, and repetitive thoughts gradually improves.

What sertraline is used for

According to the UK's NHS and the StatPearls reference, sertraline is used for:

In an analysis published in The Lancet in 2009 comparing 12 modern antidepressants, sertraline and escitalopram were the best in acceptability and tolerability, and the researchers concluded that sertraline may be a suitable choice for starting treatment of moderate to severe depression, given the balance of its efficacy, tolerability, and cost.

When does sertraline start working?

The doctor often starts with a low dose and then raises it after a week or more to reduce side effects, and may increase it later if improvement is not enough. Side effects appear in the first days, and most ease within about two weeks, while clear improvement takes several weeks. In depression, treatment usually continues for several months or more after improvement.

Side effects of sertraline

  • Headache and nausea, and sometimes vomiting.
  • Diarrhea.
  • Dizziness or drowsiness.
  • Dry mouth.
  • Trouble sleeping.
  • Reduced sexual desire or delayed ejaculation.
  • Weight gain in some people.

Rare serious effects include severe allergic reaction with throat swelling and difficulty breathing, serotonin syndrome, manic episodes, and increased suicidal thoughts at the start of treatment, especially in young people.

The difference between sertraline and Cipralex

A general comparison; the final choice is the doctor's
Sertraline (Lustral)Escitalopram (Cipralex)
GroupSelective serotonin reuptake inhibitorSelective serotonin reuptake inhibitor
Among its usesDepression, OCD, panic, post-traumatic stress, and social phobiaDepression, generalized anxiety, panic, social phobia and obsessive-compulsive disorder
TolerabilityAmong the best tolerated in comparative studiesAmong the best tolerated in comparative studies
Children and teenagersUsed for OCD from age 6Approved in the US for depression in adolescents and for generalized anxiety from age 7
Special noteAvoid grapefruit juiceCaution with heart rhythm disorders
BreastfeedingOften used during breastfeedingSometimes used after consulting the doctor
Infographic: Sertraline or Cipralex? Group, among its uses, tolerability, children and adolescents, special note
A general comparison between sertraline (Lustral) and escitalopram (Cipralex)

The bottom line is that the two medications are close in effectiveness, and the choice between them depends on the dominant symptoms, accompanying illnesses, other medications, and previous experience. If one does not suit you, that does not mean the other will not.

Interactions, pregnancy, and breastfeeding

  • Blood thinners such as warfarin and apixaban, and anti-inflammatory painkillers such as aspirin and ibuprofen: increase the risk of bleeding.
  • MAOI antidepressants, tramadol, and St. John's wort: risk of serotonin syndrome.
  • Grapefruit juice: the UK's NHS advises avoiding it.
  • Alcohol: it may stop the medication from working as it should.

The UK's NHS states that sertraline can often be used during breastfeeding because it passes into milk in small amounts, and that it may be used in pregnancy if needed after discussion with the doctor, which is why it is often mentioned in the treatment of postpartum depression. Caution is needed for anyone with epilepsy, diabetes, heart disease, glaucoma, a bleeding disorder, or a history of mania.

Is sertraline addictive? And how is it stopped?

Sertraline does not cause addiction or euphoria, but the body adapts to it, so stopping it suddenly may cause dizziness, nausea, insomnia, irritability, and sensations like mild electric shocks. So the doctor reduces the dose gradually over weeks or months, and follows up to tell discontinuation symptoms from a return of the illness.

When should you see the doctor?

See your doctor if you do not improve after several weeks, if the side effects are bothersome, or if thoughts of self-harm or excessive energy with little sleep appear. And if anxiety or depression comes together with substance or sedative use, Eradah's dual diagnosis treatment deals with both together, and follow-up can be through outpatient treatment or the psychiatry department depending on the severity of the condition.

Frequently asked questions

Frequently asked questions about sertraline

Didn’t find your answer?

Ask a specialist directly. The reply is confidential and carries no commitment.

Ask on WhatsApp
What is sertraline prescribed for?

Depression, obsessive-compulsive disorder, panic attacks, post-traumatic stress disorder, social phobia, and premenstrual dysphoric disorder.

Is sertraline addictive?

It does not cause addiction or euphoria, but stopping it suddenly may cause temporary discontinuation symptoms, so it is reduced gradually.

Which is better, sertraline or Cipralex?

Both are among the better-tolerated antidepressants and their effectiveness is close, and the doctor chooses according to symptoms, health condition, and other medications.

When does sertraline start working?

Side effects appear first, then improvement begins gradually over several weeks.

Does sertraline cause weight gain?

It may cause weight gain in some people, but it is not a rule for everyone.

Is sertraline safe during breastfeeding?

It is often used during breastfeeding because it passes into milk in small amounts, but the decision is the doctor's.

What is the difference between Lustral and Modapex?

Both contain sertraline, and the difference is the manufacturer. Switching should be done with the knowledge of your doctor or pharmacist.

Need a suitable treatment plan?

Your information is confidential and is not shared with anyone

Call WhatsApp Consultation