Stopping antidepressants

When stopping is reasonable

The standard rule of thumb after a first depressive episode is to continue the antidepressant for six to twelve months after symptoms have fully resolved, then reassess. After two episodes, longer maintenance (often two years or more) is commonly recommended. After three or more episodes, indefinite maintenance is the default unless there is a specific reason to stop.

Other factors that argue for staying on longer: the most recent episode was severe, included suicidal thoughts, or had psychotic features; recovery was slow; current life context is stressful (a major move, a new baby, job change, grief); residual symptoms are still present; or there is a strong family history of recurrent depression.

Factors that argue for trying a taper: full remission for at least six months, stable life context, no residual symptoms, no recent episodes, and a clear personal reason to stop (planning pregnancy, side effects, preference). The decision is individual and is made with a prescriber who knows the full picture.

What discontinuation feels like

Antidepressant discontinuation syndrome is a constellation of symptoms that begins within a few days of stopping or reducing an antidepressant. It is not addiction. It is the brain adjusting to a sudden change in medication. The classic mnemonic is FINISH: Flu-like symptoms, Insomnia, Nausea, Imbalance, Sensory disturbances ("brain zaps"), and Hyperarousal (anxiety, agitation, irritability).

Symptoms typically begin within two to four days, peak around one week, and resolve over two to three weeks. Some people have longer or more severe symptoms. The symptoms are real, are temporary, and are managed by slowing the taper.

Brain zaps are the most distinctive symptom. Patients describe brief electrical-shock sensations in the head, often triggered by eye movement. They are not dangerous and resolve as the taper completes.

Which medications are most associated with discontinuation symptoms

The risk and severity of discontinuation symptoms depend largely on a medication's half-life. Shorter-half-life medications produce more pronounced discontinuation.

• Highest risk: Paroxetine (Paxil), venlafaxine (Effexor), desvenlafaxine (Pristiq). Short half-lives, often-pronounced discontinuation symptoms, slow taper required.
• Moderate risk: Sertraline, escitalopram, citalopram, duloxetine, vortioxetine. Standard taper usually adequate.
• Lowest risk: Fluoxetine (Prozac). Long half-life means it self-tapers. Many prescribers stop fluoxetine without a formal taper.
• Other classes: Bupropion has minimal discontinuation effects. Mirtazapine has moderate effects, including sleep disruption.

How to taper

There is no single right schedule. The principles are consistent.

1. Slower is safer. The traditional approach was to halve the dose for two weeks and then stop. Newer evidence supports a slower hyperbolic taper, especially after long-term use, in which the dose is reduced in smaller increments as you approach zero. This reflects how receptor occupancy actually changes with dose.
2. Allow weeks, not days. A reasonable starting plan is to reduce the dose every two to four weeks, watching for symptoms before the next reduction. Long-term users (more than a year) often need months.
3. Use available dose forms. Liquid formulations and pill cutters help with smaller increments. Compounding pharmacies can prepare custom doses for very slow tapers.
4. Pause if symptoms appear. If discontinuation symptoms emerge, hold the current dose for one to two weeks before resuming the taper. If they are severe, return to the prior dose.
5. Track mood, not just side effects. Distinguishing discontinuation symptoms from a return of depression is important. Discontinuation symptoms peak within one to two weeks and resolve. A returning depressive episode tends to build over weeks and includes the original symptoms (low mood, loss of interest, sleep change, hopelessness).

Tapering plans are individual. Talk to the prescriber before changing the dose. Do not stop abruptly.

Discontinuation versus relapse

Distinguishing the two is one of the most common challenges of stopping. A useful mental model:

• Discontinuation symptoms begin within days of a dose change, peak within one to two weeks, and include flu-like symptoms, dizziness, brain zaps, sleep disruption, irritability, and nausea. They resolve as the body adjusts.
• Relapse tends to build more slowly over weeks, includes the original symptoms (low mood, loss of interest, hopelessness, suicidal thoughts), and persists.

If symptoms appear within days of a reduction and feel like the body is "off," they are usually discontinuation. If symptoms appear weeks later and feel like the depression returning, they are usually relapse. When in doubt, contact the prescriber.

What to do if discontinuation is severe

If symptoms are severe enough to interfere with daily function, the standard move is to return to the prior dose, stabilize, and resume the taper at a slower rate. Some people need a longer taper than they expected. That is not failure. It is information about how the taper needs to be paced. A prescriber who knows the medication can build a plan that works.