Most people should stay on Lexapro for at least 6 months after their symptoms improve, not 6 months from when they started taking it. That distinction matters because it can take 4 to 8 weeks for the medication to reach its full effect, meaning the minimum total treatment time is closer to 8 or 9 months. Beyond that baseline, the right duration depends on why you’re taking it, how many episodes you’ve had, and how your body responds.
The 6-Month Minimum After Remission
Clinical guidelines recommend continuing antidepressant treatment for at least 6 months after symptoms have gone into remission. This is the continuation phase, and its purpose is to prevent relapse. Depression has a high rate of returning if medication is stopped too soon after feeling better, and many people make the mistake of interpreting “feeling normal again” as a sign they no longer need the drug. In reality, feeling normal is the medication working.
During this phase, your prescriber should be checking in regularly to assess whether symptoms are staying in remission and whether side effects are manageable. If everything looks stable at the end of that window, tapering off becomes a reasonable conversation for people experiencing a first episode of depression.
When Longer Treatment Makes Sense
Six months is the floor, not the ceiling. If you’ve had two or more depressive episodes in your lifetime, most guidelines recommend staying on maintenance treatment for significantly longer, potentially years or indefinitely. The more episodes you’ve had, the higher your risk of another one, and each recurrence tends to come faster than the last.
Other factors that push toward longer treatment include severe episodes (hospitalization, suicidal thoughts), ongoing life stressors that increase vulnerability, other mental health conditions alongside depression, and episodes that were difficult to get under control in the first place. The general principle is that the dose that got you into remission is the dose you should stay on during maintenance. Lowering it “just because things are going well” can invite a return of symptoms.
Anxiety Disorders
If you’re taking Lexapro for generalized anxiety disorder rather than depression, the timeline looks different. Anxiety treatment is typically considered long-term from the start. There’s no standard 6-month-and-reassess window the way there is with a first depressive episode. If Lexapro is effectively managing your anxiety, the expectation is usually that you’ll continue taking it for an extended period, with periodic check-ins to evaluate whether it’s still the right fit.
Can Lexapro Stop Working Over Time?
For some people, yes. An antidepressant that worked well for months or years can gradually lose its effectiveness, a phenomenon sometimes called antidepressant tolerance or “poop-out.” Researchers at the Mayo Clinic note that the cause isn’t well understood, and there’s no way to predict who it will happen to. If you notice your symptoms creeping back despite consistent use, that’s worth bringing up with your prescriber. Options include adjusting the dose, adding a second medication, or switching to a different antidepressant altogether.
Side Effects on Long-Term Use
The most common side effects of Lexapro, including nausea, fatigue, sleep changes, increased sweating, and sexual side effects like reduced sex drive or difficulty reaching orgasm, tend to show up early and sometimes fade over the first few weeks. But sexual side effects in particular can persist for as long as you take the medication, and they’re one of the most common reasons people want to stop.
Weight gain is another concern that tends to accumulate gradually over months rather than appearing right away. While the FDA prescribing data doesn’t list dramatic weight changes as a top-tier side effect, many long-term users report slow, steady increases that are hard to reverse while still on the medication. If you’re noticing physical changes that bother you after a year or more, that’s a legitimate reason to reassess the risk-benefit balance with your prescriber rather than something to quietly tolerate.
What Happens When You Stop
Lexapro carries a moderate risk of discontinuation syndrome, meaning your body can react when the drug leaves your system. Symptoms typically start within 2 to 4 days of stopping and can include dizziness, nausea, headaches, fatigue, irritability, and a distinctive sensation often described as “brain zaps,” a brief electrical or buzzing feeling in the head. Vivid or disturbing dreams are also common.
Most people who experience these symptoms find them mild and resolve within a few weeks. But the range is wide. One study found that about 7% of people still had discontinuation symptoms at the 2-month mark, 6% at one year, and 2% beyond three years. These aren’t common outcomes, but they’re worth knowing about before you make a plan.
How Tapering Works
The single most important rule for stopping Lexapro is to never quit abruptly. A gradual taper, where your dose is reduced in small steps over weeks or months, dramatically lowers the chance of discontinuation symptoms. How long the taper takes depends on your current dose, how long you’ve been on the medication, and whether you’ve had withdrawal issues with antidepressants before.
Someone on a low dose for under a year might taper over 4 to 6 weeks. Someone on a higher dose for several years might need a much slower reduction, sometimes stretching over several months with very small dose decreases at each step. Your prescriber will create a schedule tailored to your situation. If at any point during the taper you feel a significant return of your original symptoms, that’s a signal to pause, go back up to the previous dose, and reassess whether stopping is the right move at this time.
There’s no shame in restarting or staying on longer than you planned. The goal isn’t to get off the medication as fast as possible. It’s to find the approach that keeps you stable with the fewest tradeoffs.