Wellness Lantern

Comparing Sertraline and Escitalopram

Both are SSRIs prescribed for depression and anxiety, but they differ in approved uses, available forms and the interactions worth flagging to a prescriber.

Table of contents
Featured image for "Comparing Sertraline and Escitalopram"

Sertraline (Zoloft) and escitalopram (Lexapro) are both selective serotonin reuptake inhibitors, or SSRIs — a group of antidepressants that work by increasing the amount of serotonin, a natural substance in the brain that helps maintain mental balance (National Library of Medicine (MedlinePlus), undated; MedlinePlus Connect, undated). Because the mechanism is shared, the practical differences between them tend to be about approved uses, available forms, interaction warnings and how a particular person tolerates them.

This guide sets the two side by side so you can follow the conversation with your prescriber. It does not include doses — the strength, timing and any change to either medicine belong to the person who prescribes it.

Side-by-Side Comparison

FeatureSertraline (Zoloft)Escitalopram (Lexapro)
Drug classSelective serotonin reuptake inhibitor (SSRI); blocks reabsorption of serotonin at the nerve ending, increasing the amount available in the brain (MedlinePlus, undated)Selective serotonin reuptake inhibitor (SSRI); same reuptake-blocking action on serotonin (MedlinePlus Connect, undated)
How it's takenBy mouth, as a tablet or as a concentrate (liquid) (MedlinePlus, undated)By mouth; the capsule product described in the FDA label comes in a single strength, so a gradual reduction requires a different escitalopram product (U.S. Food and Drug Administration, 2025)
How oftenOnce daily, in the morning or the evening; for premenstrual dysphoric disorder, once a day either every day of the month or on certain days of the month (MedlinePlus, undated)Usually once a day, with timing set by the prescriber
Common side effectsNausea, diarrhea, heartburn, loss of appetite, uncontrollable shaking of part of the body, sexual problems, excessive sweating (MedlinePlus, undated)In the capsule label's adverse reaction table, dry mouth was reported in 6% of escitalopram-treated patients versus 5% on placebo, and increased sweating in 5% versus 2% on placebo (U.S. Food and Drug Administration, 2025)
One notable differenceAvailable as a liquid concentrate, which matters when swallowing tablets is difficult; also has a labeled month-pattern use for premenstrual dysphoric disorder (MedlinePlus, undated)The capsule label names specific contraindications: a monoamine oxidase inhibitor (MAOI) taken at the same time or within 14 days of stopping one, and pimozide — both because of how they combine with serotonin and cardiac effects (U.S. Food and Drug Administration, 2025)

When One Might Be Chosen Over the Other

Prescribers weigh several things at once, and the reasoning below is illustrative, not a rule.

If a person has difficulty swallowing tablets, or needs a form that can be measured out, a doctor may consider that sertraline is supplied as a concentrate (liquid) as well as a tablet (MedlinePlus, undated). If a person's symptoms follow a monthly pattern, a doctor may take into account that sertraline has a labeled dosing pattern for premenstrual dysphoric disorder, taken either every day of the month or on certain days (MedlinePlus, undated).

If a person is an adolescent, a doctor may look at what each product's label covers: escitalopram capsules are indicated for major depressive disorder in adults younger than 65 and in pediatric patients 12 years of age and older (U.S. Food and Drug Administration, 2025). Separately, sertraline may decrease appetite and cause weight loss in children, and parents are advised to talk to the child's doctor about concerns regarding growth or weight (MedlinePlus, undated). Either way, medications in this class may increase the risk of suicidal thoughts and actions in children, teenagers and young adults under 24, with the risk more likely in the first few months of treatment and when the dose is increased (MedlinePlus, undated) — which is why close follow-up is part of the plan.

If a person takes a monoamine oxidase inhibitor, has taken one within the past 14 days, or takes pimozide, the escitalopram capsule label treats those combinations as contraindicated (U.S. Food and Drug Administration, 2025). If a person takes NSAIDs, aspirin, other antiplatelet drugs, warfarin or other anticoagulants, the same label notes an increased bleeding risk — serotonin is involved in platelet function, so blocking its reuptake can add to the effect of medicines that already reduce clotting (U.S. Food and Drug Administration, 2025). Bring your full medicine and supplement list to the appointment rather than deciding for yourself what interacts.

Serotonin syndrome most often occurs when two or more medicines that affect serotonin levels are taken together; both escitalopram and sertraline are listed among SSRIs that can contribute (MedlinePlus Medical Encyclopedia, undated). Neither drug is exempt from that consideration.

Side Effects to Compare

  • Both drugs — increased sweating. Reported with sertraline (MedlinePlus, undated) and recorded in the escitalopram capsule label's adverse reaction table at 5% versus 2% on placebo (U.S. Food and Drug Administration, 2025).
  • Both drugs — sexual side effects. With sertraline these include decreased sex drive, difficulty getting or keeping an erection, delayed or absent ejaculation, and delayed or absent orgasm (MedlinePlus, undated). Report these rather than stopping the medicine on your own.
  • Sertraline — digestive effects. Nausea, diarrhea, heartburn and loss of appetite are listed (MedlinePlus, undated).
  • Escitalopram — dry mouth. Reported in 6% of treated patients versus 5% on placebo in the capsule label (U.S. Food and Drug Administration, 2025).
  • Sertraline — uncontrollable shaking of a part of the body (MedlinePlus, undated). Tell your doctor if this appears or worsens.
  • Sertraline — drowsiness. Do not drive or operate machinery until you know how it affects you (MedlinePlus, undated).
  • Both drugs — alcohol. Alcohol can make sertraline's side effects worse; ask your doctor about safe use of alcoholic beverages while taking either medicine (MedlinePlus, undated).
  • Both drugs — low sodium, bleeding, heart rhythm changes and serotonin syndrome are listed among escitalopram's possible effects (Cleveland Clinic, undated), and serotonin syndrome is associated with SSRIs including sertraline (MedlinePlus Medical Encyclopedia, undated). Call your doctor promptly about unusual bruising or bleeding, confusion or marked weakness. Get emergency care for agitation with fever, muscle stiffness or a racing heartbeat, or for fainting.
  • Sertraline — angle-closure glaucoma, in which fluid is suddenly blocked from leaving the eye, raising eye pressure quickly and possibly leading to vision loss (MedlinePlus, undated). Sudden eye pain or change in vision is also listed for escitalopram (Cleveland Clinic, undated). Treat sudden eye pain or vision change as a reason to seek emergency care.
  • Both drugs — allergic reactions. Rash, itching, hives and swelling of the face, lips, tongue or throat are listed for escitalopram (Cleveland Clinic, undated). Swelling of the face, lips, tongue or throat, or trouble breathing, is an emergency.
  • Both drugs — new or worsening thoughts of suicide or self-harm (MedlinePlus, undated; Cleveland Clinic, undated). Seek emergency care for thoughts of acting on self-harm; contact your prescriber the same day for new or worsening thoughts without immediate danger.

Serious side effects can be reported by you or your doctor to the FDA's MedWatch Adverse Event Reporting program online or by phone at 1-800-332-1088 (MedlinePlus, undated).

Frequently asked questions

Can I switch from sertraline to escitalopram, or the other way round?

Switching between SSRIs is something prescribers do, but only under a doctor's guidance — do not stop, start or overlap either medicine without talking to your doctor or pharmacist first. The escitalopram capsule label instructs that the dosage be reduced gradually rather than stopped abruptly whenever possible, and notes that because that capsule product comes in only one strength, a gradual reduction requires using another escitalopram product (U.S. Food and Drug Administration, 2025). Ask your prescriber how the changeover will be timed and what to watch for while it happens.

How long before I can tell whether the new medicine is helping?

It may take a few weeks or longer before the full benefit of sertraline is felt, and the medication should be continued even if you feel well, unless your doctor tells you otherwise (National Library of Medicine (MedlinePlus), undated). Ask your prescriber what timeline they expect for your situation and when they want to see you again. If you feel worse at any point, contact them rather than waiting for the next appointment.

What should I do if I miss a dose during a switch?

For sertraline, the guidance is to take the missed dose as soon as you remember, but to skip it and resume the regular schedule if it is almost time for the next dose — and not to take a double dose (National Library of Medicine (MedlinePlus), undated). If you are mid-switch or taking escitalopram, ask your pharmacist what applies to your specific product, because the instruction can differ by form.

If one caused side effects, will the other cause the same ones?

Not necessarily. The two share a mechanism, so overlapping effects such as increased sweating and sexual side effects are possible with either, but people tolerate them differently and the labeled side effect lists are not identical (National Library of Medicine (MedlinePlus), undated; U.S. Food and Drug Administration, 2025). Describe exactly what you experienced and when to your prescriber — it is information for them to interpret, not a conclusion to draw yourself — and do not change what you take without speaking to them or your pharmacist first.

Sources

  1. National Library of Medicine (MedlinePlus)Sertraline: MedlinePlus Drug Information
  2. National Library of Medicine (MedlinePlus Connect, sourced from MedlinePlus drug information)Escitalopram (MedlinePlus Connect summary)

Written by

Marguerite Okafor-Lind

Marguerite sets the tone for Wellnesslantern, chasing stories where everyday habits meet hard questions about long-term health. She's drawn to nuance over trends, and prefers a well-placed caveat to a bold claim. Readers know her for asking 'compared to what?' in every draft.