Lexapro vs. Zoloft: How These Two SSRIs Differ

What's the difference between Lexapro and Zoloft?

Lexapro (escitalopram) and Zoloft (sertraline) are both SSRIs — selective serotonin reuptake inhibitors — and they treat overlapping conditions, but they are not interchangeable. The clearest differences sit on their FDA labels: Lexapro is approved for major depression and generalized anxiety disorder, while Zoloft is approved for depression plus OCD, panic disorder, PTSD, social anxiety disorder and PMDD. The ages each is approved for in children and teens differ too, and each has its own pattern of common side effects. Neither one is "better" — a prescriber chooses based on your diagnosis, your history, what has worked for you (or a close relative) before, your other medications, and which side effects matter most to you.

Is Lexapro the same kind of medication as Zoloft?

Yes — same class. Lexapro is the brand name for escitalopram; Zoloft is the brand name for sertraline. Per their FDA labels, both are selective serotonin reuptake inhibitors (Lexapro, Zoloft). SSRIs act on serotonin, a chemical messenger involved in mood, and they are among the most commonly prescribed medications for depression and anxiety.

Still, two medications can share a class without being the same experience. The molecules are different, the labels list different approved uses and ages, and people often respond differently to one than the other. Someone who had a rough time on one SSRI may do well on another — which is a big part of why this comparison is a map of the differences, not a ranking.

What is each one FDA-approved to treat?

The approved uses are where Lexapro and Zoloft differ most clearly.

According to the Lexapro label on DailyMed, Lexapro (escitalopram) is approved to treat major depressive disorder in adults and adolescents ages 12 and up, and generalized anxiety disorder in adults and in children ages 7 and up.

Zoloft's list of adult approvals runs longer. Its label covers major depressive disorder, obsessive-compulsive disorder, panic disorder, post-traumatic stress disorder, social anxiety disorder and premenstrual dysphoric disorder. In patients under 18, Zoloft carries just one FDA approval: OCD, for ages 6 to 17. Prescribing it to children and teens for depression, anxiety or anything else is off-label — a call prescribers can make when they judge it appropriate, and one worth asking about. If you want to read more, the FDA offers a plain-language explanation of what off-label use of an approved drug means.

A longer list of approvals does not mean a stronger medication. It mostly reflects which conditions were formally studied and brought to the FDA for that drug. In practice, a prescriber treating depression or anxiety may consider either one, while someone whose main concern is OCD or PTSD after trauma may hear Zoloft discussed first, because it carries those specific approvals on its label.

What about side effects?

The two medications work in similar ways, so their side effects overlap. Both labels list nausea, sleep changes (trouble sleeping for some people, sleepiness for others), increased sweating, fatigue and sexual side effects — such as lowered desire or delayed orgasm — among the most commonly reported reactions (Lexapro; Zoloft). Zoloft's label also lists diarrhea and indigestion among its most common reactions.

Some people find early side effects fade over the first weeks; others don't. Either way, don't tough one out silently — tell your prescriber, because a side effect you can't live with is exactly the kind of information that shapes the next decision. Appetite and weight can also shift on either medication; we've written separately about how psychiatric medications can affect weight and what to do if that worries you.

How long does each one stay in the body?

A medication's half-life is the time it takes for the amount in your body to drop by half. Per the pharmacology sections of their labels, escitalopram's half-life is about 27 to 32 hours and sertraline's is about 26 hours — in both cases, roughly a day (Lexapro; Zoloft).

Because the two numbers are so close, half-life is rarely the deciding factor between these particular medications. It still matters to you as a patient: a half-life of about a day means the medication leaves the body gradually over several days rather than all at once, and it is one reason stopping abruptly can cause uncomfortable symptoms. If a dose gets missed or you're thinking about stopping, call your prescriber rather than improvising — never stop, start or change either medication on your own.

Which drug interactions should I bring up with my prescriber?

Three groups come straight from both labels and are worth raising at every visit:

• MAOIs (monoamine oxidase inhibitors). Both labels say these must not be combined with Lexapro or Zoloft. If you have taken an MAOI recently, your prescriber needs to know before either SSRI is started.
• Other medicines that affect serotonin. Combining serotonergic drugs raises the risk of serotonin syndrome, a potentially serious reaction. Both labels flag other antidepressants, certain migraine medicines (triptans), certain pain medicines, and the supplement St. John's wort, among others.
• NSAIDs, aspirin and blood thinners. Both labels warn that SSRIs taken with these can increase the risk of bleeding.

The practical move is simple: bring a full list of everything you take — prescriptions, over-the-counter medicines and supplements — so your prescriber and pharmacist can check it against either medication (Lexapro label; Zoloft label).

What does the boxed warning on both labels mean?

Both medications carry the FDA's most serious warning, and it reads essentially the same on each label. Lexapro (escitalopram) and Zoloft (sertraline) and other antidepressant medicines may increase suicidal thoughts or actions in some children, teenagers and young adults (24 years of age and younger), especially within the first few months of treatment or when the dose is changed. Watch closely for new or sudden changes in mood, behavior, thoughts or feelings, and call your prescriber right away if you notice them.

This warning is a reason for close follow-up early in treatment, not a reason to avoid treatment — untreated depression carries its own serious risks, and that trade-off is exactly what your prescriber weighs with you.

If you or someone you know is thinking about suicide or is in crisis, call or text 988, or chat at 988lifeline.org, to reach the 988 Suicide & Crisis Lifeline. It's free, confidential and available 24/7. If someone is in immediate danger, call 911.

How does a prescriber choose between Lexapro and Zoloft?

There is no scoreboard where one medication wins. Instead, a prescriber looks at the whole picture:

• Your diagnosis. If the main concern matches one of Zoloft's specific approvals — OCD, panic disorder, PTSD, social anxiety disorder or PMDD — that label history may weigh in its favor. For generalized anxiety or depression, either may be on the table.
• Your past response. If you have taken one of these before and it helped — or caused side effects you couldn't tolerate — that history usually matters more than anything on paper. A strong response in a parent or sibling can also inform the choice.
• Your other medications. The interaction lists above, plus everything else you take, can tip the decision one way or the other.
• Your age. For patients under 18, the approvals differ sharply, as described above, and your prescriber should tell you plainly when a use would be off-label.
• Your side-effect priorities. If sleep, stomach upset or sexual side effects are a particular worry for you, say so — it genuinely changes the conversation.
• Pregnancy or plans for pregnancy. Raise this early; it's a factor prescribers weigh carefully with you.

What should I ask at my appointment?

A short list of questions keeps the visit focused and makes sure you leave understanding the plan:

• Why this medication for me, rather than the other one?
• Is it FDA-approved for my condition and my age — and if not, why do you think off-label use makes sense here?
• Which side effects should I expect early, and which ones mean I should call you right away?
• How will we know it's working, and when should we expect to see change? (We've covered how long antidepressants usually take to work in detail.)
• What should I avoid combining with it, including over-the-counter medicines and supplements?
• If I ever want to stop, what's the safe way to do that?

If cost is on your mind before the visit, you can review our coverage and payment information ahead of time so those questions make it onto your list too.

If you're already taking Lexapro or Zoloft and you're not sure it's the right fit — side effects linger, or you're not feeling better — that question deserves a real conversation, not a guess. You can talk it through with a psychiatric provider at MindVibe: get started with booking when you're ready.

Frequently asked questions

Is Lexapro or Zoloft better for anxiety?

Neither is better across the board. Zoloft is FDA-approved for social anxiety disorder, panic disorder and PTSD, while Lexapro is approved for generalized anxiety disorder, so the specific type of anxiety you're dealing with shapes which one a prescriber discusses first. Your history, other medications and side-effect concerns matter just as much as the label.

Can teenagers take Lexapro or Zoloft?

Lexapro is FDA-approved for depression in ages 12 and up and for generalized anxiety disorder in ages 7 and up. For people under 18, Zoloft is FDA-approved only to treat OCD, in ages 6 to 17; using it for depression or anxiety in teens is off-label, which prescribers may still choose when they judge it appropriate. Either way, ask the prescriber directly whether the use is on-label for your teen's age and condition.

Can I switch from Zoloft to Lexapro on my own?

No. Stopping abruptly can cause uncomfortable symptoms, and switching safely between medications takes a plan. If you want to change, say so — prescribers have this conversation all the time and can map out the steps with you.

How long do Lexapro and Zoloft take to work?

For most people, benefits build gradually over several weeks, and side effects often show up before improvement does. That early stretch is when staying in touch with your prescriber matters most — both to manage side effects and to judge whether the medication is on track.

Do Lexapro and Zoloft cause weight gain?

Both medications can affect appetite and weight, and the direction and size of the change varies from person to person. If weight is a concern for you, raise it before starting and track it with your prescriber afterward — it's a legitimate factor in choosing and adjusting treatment.

Are Lexapro and Zoloft addictive?

No — neither is a controlled substance, and they do not cause cravings the way addictive drugs do. But stopping either one suddenly can cause uncomfortable symptoms, which is different from addiction. When it's time to stop, your prescriber will usually reduce the medication gradually.

This article is for educational purposes only and is not medical advice. It does not diagnose any condition or replace an evaluation by a licensed clinician. Always talk with your prescriber before starting, stopping or changing any medication.