Sertraline facts, myths, and online claims
Sertraline is an SSRI antidepressant sold as Zoloft and widely as a generic. It raises the amount of serotonin available in the brain. It is approved for major depression, obsessive-compulsive disorder, panic disorder, post-traumatic stress disorder, social anxiety disorder, and premenstrual dysphoric disorder. It comes as a tablet or an oral concentrate that is diluted before use, and is usually taken once a day, in the morning or evening, with or without food.
Below: what the FDA label and NIH sources establish, what people say about Sertraline in public forums set next to the evidence, the misconceptions that come up most, and the questions people ask. Every line links to where it came from.
Established facts (7)
Zoloft is approved for major depressive disorder, obsessive-compulsive disorder (including children aged 6 and older), panic disorder, post-traumatic stress disorder, social anxiety disorder, and premenstrual dysphoric disorder.
It is taken once daily. Tablets come in 25 mg, 50 mg, and 100 mg strengths, and the 20 mg/mL oral solution contains 12% alcohol and is diluted before use. Food causes only a small increase in blood levels.
In adult trials the side effects seen most often, compared with placebo, were nausea (26% vs 12%), diarrhea or loose stools (20% vs 10%), tremor (9% vs 2%), ejaculation failure (8% vs 1%), and decreased libido (6% vs 2%).
The label carries a boxed warning: antidepressants increased the risk of suicidal thoughts and behavior in children, teenagers, and young adults under 24, especially during the first few months of treatment and after dose changes.
Sertraline is not a controlled substance. In abuse liability studies it did not produce euphoria or drug liking. Its average elimination half-life is about 26 hours.
Stopping suddenly can bring on nausea, sweating, low mood, irritability, dizziness, and sensory disturbances. The label recommends a gradual reduction in dose rather than abrupt cessation.
Sertraline works mainly by blocking serotonin reuptake at the presynaptic neuron. It has little effect on norepinephrine, though it has somewhat more dopaminergic activity than other SSRIs.
What people say online (3)
Claims collected from public forums and review sites, quoted the way people put them. They are listed so the evidence can sit next to them, not because they are true. Status reflects what the cited studies and labels show as of 2026-09-07.
- Partly supported
"Zoloft makes you gain weight."
Weight gain is a listed possible side effect, but in a cohort of 183,118 US patients sertraline had among the smallest six-month weight changes of eight common antidepressants. Escitalopram, paroxetine, and duloxetine were linked to more gain; only bupropion was linked to less.
Seen on WebMD reviews, Drugs.com reviewsEvidence PubMed (Annals of Internal Medicine, 2024), NHS - Partly supported
"It works for a while and then stops working."
Loss of response during ongoing treatment is real and has a name, antidepressant tachyphylaxis. A review of continuation studies found most relapses occurred in people who were placebo responders rather than true drug responders, suggesting true loss of drug effect is less common than believed.
- Partly supported
"You can drink on sertraline, it just flushes the medicine out sooner."
In healthy volunteers, sertraline did not increase the mental or motor effects of alcohol. Still, MedlinePlus notes alcohol can make sertraline side effects worse, and the NHS says it can stop the medicine working properly. Nothing supports the idea that alcohol flushes it out; the half-life is about 26 hours.
Common misconceptions (4)
Myth Sertraline is addictive, so it must be a controlled substance.
Reality Sertraline is not a controlled substance, and abuse studies found no euphoria or drug liking. The discontinuation symptoms some people describe as withdrawal are a separate effect of stopping a serotonergic drug abruptly, not a sign of addiction.
Myth It works right away, like an as-needed anxiety pill.
Reality Sertraline is taken every day, and it may take a few weeks or longer before the full benefit is felt. It is not designed to be taken only when symptoms appear.
Myth Once you feel better it is fine to quit suddenly.
Reality Sudden discontinuation is linked to nausea, sweating, mood changes, anxiety, dizziness, and sleep problems. MedlinePlus and the FDA label both describe a gradual dose reduction rather than abrupt cessation.
Myth Zoloft is only a depression drug.
Reality Depression is one of six approved uses. The label also covers obsessive-compulsive disorder, panic disorder, post-traumatic stress disorder, social anxiety disorder, and premenstrual dysphoric disorder.
Questions people ask (7)
- How long does sertraline take to work?
- MedlinePlus says it may take a few weeks or longer before the full benefit is felt. Early side effects such as nausea often appear before the mood benefit does, which is why the first weeks can feel discouraging.
- Is sertraline a controlled substance?
- No. The FDA label states that Zoloft contains sertraline, which is not a controlled substance, and that it did not produce euphoria or drug liking in abuse liability studies.
- What are the most common side effects of sertraline?
- In adult trials the most common were nausea, diarrhea, tremor, indigestion, decreased appetite, sweating, ejaculation failure, and decreased libido. The label also warns that SSRIs can cause sexual dysfunction in both sexes.
- Is sertraline taken with food, and in the morning or at night?
- It is taken once a day, in the morning or the evening, at about the same time each day. Food causes only a small increase in blood levels, so it can be taken with or without a meal.
- What happens if a dose of sertraline is missed?
- MedlinePlus describes taking the missed dose as soon as it is remembered, unless it is almost time for the next dose, in which case the missed dose is skipped. Doubling up is not part of the instructions.
- Does sertraline cause weight gain?
- The NHS lists putting on weight among possible side effects. A large US cohort study found sertraline produced less six-month weight gain than escitalopram, paroxetine, or duloxetine, and about the same as fluoxetine.
- Can sertraline be used during pregnancy?
- The NHS says sertraline can be used during pregnancy if needed, and that the lowest effective dose is usually prescribed. The decision weighs the effects of untreated depression or anxiety against the medicine.
Not medical advice. This page summarizes public sources and public opinion about Sertraline. It cannot see your dose, your other medicines, or your history. A pharmacist or prescriber can.