About 11.4% of U.S. adults used an antidepressant in the past 30 days, according to CDC survey data collected from August 2021 to August 2023. If you’re considering medication for depression, you’re probably wondering which options work best and how they differ.
This guide covers the 10 of the most commonly prescribed antidepressants in the United States. We’ll explain how each works and what to expect.
This article is for informational purposes only and does not replace professional medical advice. Always consult your doctor or psychiatrist before starting, stopping, or changing any medication.
How Antidepressants Work
Depression involves disruptions in brain chemicals called neurotransmitters - particularly serotonin, norepinephrine, and dopamine. These chemicals help regulate mood, sleep, appetite, and energy. The relationship is complex: it’s not as simple as “low serotonin = depression,” but medications that adjust these neurotransmitter systems consistently help relieve symptoms. Antidepressants adjust these neurotransmitter levels. Most take about 4 to 8 weeks to work fully. Researchers believe part of the reason is that antidepressants trigger gradual changes in how brain cells communicate, not just a quick change in brain chemicals.
The 10 Most Prescribed Depression Medications
1. Sertraline (Zoloft)
Class: SSRI Sertraline blocks serotonin reuptake, keeping more of this mood-regulating chemical available in your brain. It’s commonly prescribed antidepressant in America because it works well with relatively mild side effects. Doctors use it for depression, anxiety, OCD, PTSD, and panic disorder.
2. Bupropion (Wellbutrin)
Class: Atypical (NDRI) Unlike most antidepressants, bupropion affects dopamine and norepinephrine instead of serotonin. This makes it particularly helpful if you’re dealing with fatigue, low motivation, or lack of energy. It rarely causes weight gain or sexual side effects – common complaints with SSRIs. Bupropion is not right for everyone. It can raise the risk of seizures, so it is not used in people who have a seizure disorder or an eating disorder such as bulimia or anorexia, or in people who are suddenly stopping alcohol, benzodiazepines or certain other sedatives. If you drink heavily or are going through withdrawal, tell your doctor before starting it.
3. Escitalopram (Lexapro)
Class: SSRI Escitalopram is the S-enantiomer of citalopram - the specific molecular form responsible for citalopram’s antidepressant effects, isolated from its less active mirror image. This more targeted composition may contribute to its favorable side-effect profile. Doctors often prescribe it first for depression and generalized anxiety disorder. Most patients tolerate it well.
4. Trazodone (formerly Desyrel)
Class: Atypical (SARI) While FDA-approved for depression, trazodone is commonly prescribed off-label for sleep problems. At low doses, it helps with insomnia. Higher doses treat depression. If your depression includes severe sleep disturbances, trazodone may help with both at once.
5. Fluoxetine (Prozac)
Class: SSRI Prozac was the first SSRI approved in the U.S. (FDA approval: December 1987) and remains widely used. Its unusually long half-life - the time it takes your body to clear half the drug - means missing a dose is less disruptive than with other SSRIs. It treats depression, OCD, panic disorder, and bulimia.
6. Duloxetine (Cymbalta)
Class: SNRI Duloxetine affects both serotonin and norepinephrine. This dual action helps with depression, especially when paired with chronic pain conditions like fibromyalgia or diabetic nerve pain. If you have both depression and pain, this might be a strong option.
7. Citalopram (Celexa)
Class: SSRI Citalopram is similar to escitalopram but includes both active and inactive enantiomers. It’s effective for major depression and often prescribed as a first-line treatment.
8. Mirtazapine (Remeron)
Class: Atypical Mirtazapine works differently from SSRIs. It boosts serotonin and norepinephrine through a unique mechanism involving receptor blocking. It’s useful if you haven’t responded to SSRIs or if depression has severely reduced your appetite and disrupted your sleep. Warning: It often increases appetite and causes drowsiness.
9. Venlafaxine (Effexor XR)
Class: SNRI Venlafaxine blocks reuptake of both serotonin and norepinephrine. At lower doses, it mainly affects serotonin. Higher doses engage norepinephrine too.
10. Paroxetine (Paxil)
Class: SSRI Paroxetine treats depression, anxiety disorders, OCD, and PTSD. It has a shorter half-life than most SSRIs and is more likely than others to cause discontinuation symptoms if suddenly stopped. Downside: Higher risk of withdrawal symptoms if stopped suddenly. Your doctor will taper you off gradually. Paroxetine use in early pregnancy has been linked to a higher risk of certain heart defects. If you are pregnant or planning a pregnancy, talk with your doctor about your options.
Newer Depression Treatments
Several antidepressants have been approved in recent years. Auvelity (dextromethorphan and bupropion), approved in 2022, can start working within about a week for some people. Zurzuvae (zuranolone), approved in 2023, is a 14-day pill treatment for postpartum depression. Exxua (gepirone), approved in 2023, acts on serotonin receptors in a different way than SSRIs. Spravato (esketamine), a nasal spray given in a certified clinic, has been approved for treatment-resistant depression since 2019 and, as of January 2025, can be used on its own rather than only alongside an oral antidepressant.
How Do the Different Antidepressant Classes Work?
SSRIs (Selective Serotonin Reuptake Inhibitors)
SSRIs prevent nerve cells from reabsorbing serotonin after it’s released, leaving more of it available in the gaps between neurons where it regulates mood. They’re the most commonly prescribed antidepressants because they’re effective for most people and cause fewer side effects than older options like tricyclics or MAOIs. Examples from our list: Sertraline, escitalopram, fluoxetine, citalopram, paroxetine
SNRIs (Serotonin-Norepinephrine Reuptake Inhibitors)
These affect both serotonin and norepinephrine - helpful for energy, focus, and alertness alongside mood. Good for depression with significant fatigue or when paired with chronic pain. Examples from our list: Duloxetine, venlafaxine
Atypical Antidepressants
These work through various mechanisms that don’t fit the SSRI/SNRI mold. Bupropion targets dopamine. Trazodone acts on serotonin receptors differently. Mirtazapine blocks certain receptors to boost multiple neurotransmitters. Examples from our list: Bupropion, trazodone, mirtazapine
Timeline: When Will I Feel Better?
Weeks 1–2: You might notice slight improvements in sleep or energy. Weeks 4–8: Full therapeutic effects typically emerge. Mood stabilizes, and symptoms significantly improve. Why the wait? Antidepressants don’t just boost neurotransmitters temporarily. Research suggests they may encourage changes in brain areas involved in mood, such as the hippocampus and prefrontal cortex, and those changes take time.
Side Effects You Might Experience
Common with SSRIs and SNRIs:
- Nausea (usually temporary)
- Headaches
- Sleep changes (insomnia or drowsiness)
- Sexual problems (reduced desire, difficulty with arousal or orgasm)
- Dry mouth
- Digestive issues
Many side effects, particularly nausea, headaches, and sleep changes, tend to fade within the first 2–4 weeks as your body adjusts. However, sexual side effects often persist for as long as you take the medication. If side effects don’t improve, talk to your doctor about alternatives. When to call your doctor immediately:
- Severe agitation or anxiety
- Unusual behavior changes
- Symptoms that make daily life impossible
If you are having thoughts of suicide or self-harm, call or text 988 to reach the Suicide & Crisis Lifeline any time, day or night. If you or someone else is in immediate danger, call 911.
Finding What Works for You
No single antidepressant works best for everyone. Your doctor considers:
- Your symptoms
- Other health conditions
- What you’re already taking
- Family history
- Past experience
Antidepressant Comparison at a Glance
| Medication | Class | Best For | Key Side Effects | Notable Feature |
| Sertraline (Zoloft) | SSRI | Depression, anxiety, OCD, PTSD | Nausea, sexual dysfunction | Most prescribed; well-tolerated |
| Bupropion (Wellbutrin) | NDRI | Fatigue, low motivation | Insomnia, dry mouth | Low sexual side effects; less likely to cause weight gain |
| Escitalopram (Lexapro) | SSRI | Depression, generalized anxiety | Nausea, headache | Highly targeted; good tolerability |
| Trazodone (Desyrel) | SARI | Depression with insomnia | Drowsiness, dizziness | Dual sleep/mood benefit |
| Fluoxetine (Prozac) | SSRI | Depression, OCD, bulimia | Insomnia, nausea | Long half-life; fewer withdrawal issues |
| Duloxetine (Cymbalta) | SNRI | Depression with chronic pain | Nausea, fatigue, dizziness | Treats pain and depression together |
| Citalopram (Celexa) | SSRI | Major depression | Nausea, sexual dysfunction | Max 40mg; 20mg for adults over 60 |
| Mirtazapine (Remeron) | Atypical | Depression with appetite/sleep loss | Weight gain, drowsiness | Appetite stimulation; sedating |
| Venlafaxine (Effexor) | SNRI | Depression with fatigue | Nausea, blood pressure increase | Dose-dependent dual mechanism |
| Paroxetine (Paxil) | SSRI | Depression, anxiety, PTSD | Weight gain, sexual dysfunction | Short half-life; taper carefully |
How Discover Recovery Treats Depression
Depression rarely exists in isolation. Many of our patients arrive with co-occurring substance use disorders, anxiety, PTSD, or chronic pain - which is why our approach centers on dual diagnosis care that treats the whole picture, not just one piece of it. Medication management by board-certified providers. Our psychiatrists evaluate your specific symptoms, medical history, co-occurring conditions, and prior medication trials before recommending a treatment plan. We prescribe and monitor every medication class discussed in this article - SSRIs, SNRIs, and atypical antidepressants - and adjust based on your individual response. If a first medication doesn’t work, we have the clinical infrastructure to move through alternatives systematically rather than starting over. Evidence-based therapy integrated with medication. Studies show antidepressants combined with therapy produce better outcomes than either alone. Our clinical team pairs medication management with cognitive behavioral therapy (CBT) for restructuring negative thought patterns, dialectical behavior therapy (DBT) for emotional regulation and distress tolerance, and EMDR for depression rooted in trauma. We also offer TMS (transcranial magnetic stimulation) for treatment-resistant depression when medications alone aren’t enough. Structured support across levels of care. Depending on severity, patients may begin in residential treatment, step down to partial hospitalization (PHP) or intensive outpatient (IOP), and transition to aftercare - maintaining continuity of medication management and therapeutic relationships throughout. That consistency matters when your provider is fine-tuning antidepressant dosing over the weeks it takes to reach full effect. If depression, with or without substance use, is affecting your ability to function, call us at 866.719.2173 or verify your insurance to start the conversation.
