Depression is treated with a range of approaches, from talk therapy and medication to brain stimulation and lifestyle changes. For mild to moderate depression, therapy or exercise alone can be enough. For moderate to severe cases, combining medication with therapy produces better long-term outcomes than either one on its own. The right treatment depends on how severe your symptoms are, how long you’ve had them, and what you’ve already tried.
Talk Therapy
Two forms of psychotherapy have the strongest evidence for treating depression: cognitive behavioral therapy (CBT) and interpersonal therapy (IPT). Both achieve initial response rates of up to 60%, and they work through different angles.
CBT is built on the idea that depression is driven by patterns of negative thinking. You learn to identify distorted thoughts (“I always fail,” “nothing will ever get better”), challenge them, and replace them with more realistic interpretations. Over time, this shifts your emotional responses and behavior. A typical course runs 12 to 20 sessions.
IPT focuses instead on your relationships. It treats depression as something rooted in interpersonal problems: unresolved grief, conflict with someone close to you, a major life transition, or social isolation. By improving how you navigate those situations, the emotional weight lifts. IPT is also time-limited, usually 12 to 16 sessions.
In head-to-head comparisons, the two therapies perform similarly. One clinical trial found that about 79% of IPT participants and 76% of CBT participants met improvement criteria on a standard depression scale. Neither is clearly better. The best choice often comes down to what resonates with you: if your depression is tied to how you think, CBT is a natural fit. If it’s tied to relationship struggles or life changes, IPT may feel more relevant.
Antidepressant Medication
All currently approved antidepressants work by increasing the availability of certain chemical messengers in the brain, primarily serotonin, norepinephrine, or both. The differences between drug classes come down to which messengers they target and how they do it.
SSRIs are the most commonly prescribed first-line option. They work by blocking the brain’s reabsorption of serotonin, leaving more of it available to transmit signals between nerve cells. They tend to have fewer side effects than older antidepressants, which is why they’re usually tried first. SNRIs work similarly but also boost norepinephrine, which can help with fatigue, concentration problems, and physical pain that sometimes accompanies depression.
Bupropion stands apart from most antidepressants because it acts on dopamine and norepinephrine rather than serotonin. It’s less likely to cause the sexual side effects or weight gain that some people experience with SSRIs, making it a common alternative or add-on. Mirtazapine, another atypical option, tends to be sedating, so it’s sometimes chosen when insomnia is a major symptom.
Older classes like tricyclic antidepressants (TCAs) and MAOIs are effective but come with more side effects and dietary restrictions, so they’re generally reserved for cases where newer medications haven’t worked. Most antidepressants take 4 to 6 weeks to reach full effect, and finding the right one can require some trial and adjustment.
Why Combining Therapy and Medication Works Best
For moderate to severe depression, the combination of psychotherapy and medication consistently outperforms either treatment alone. A meta-analysis across multiple trials found that people receiving combined treatment had a 40% lower risk of relapse, recurrence, or rehospitalization compared to those taking medication alone. That’s a significant margin.
The reason is straightforward: medication addresses the brain chemistry side of depression relatively quickly, while therapy teaches you skills and patterns of thinking that protect you after treatment ends. Interestingly, psychotherapy alone also showed a lower relapse risk than medication alone over the long term, suggesting that the coping strategies learned in therapy have a durable protective effect. Combined treatment didn’t significantly outperform therapy alone on long-term relapse, but it did produce faster initial relief.
Exercise as Treatment
Exercise is not just a wellness recommendation. For non-severe depression, it performs on par with antidepressant medication. A systematic review and network meta-analysis found that exercise reduced depressive symptoms with an effect size that was statistically indistinguishable from antidepressants. The direct comparison between the two showed no meaningful difference.
Both aerobic exercise (running, cycling, swimming) and resistance training have shown benefits. The threshold that most studies use is about 150 minutes per week of moderate-intensity activity, which breaks down to 30 minutes five days a week. The effect appears to be dose-dependent: more consistent exercise produces stronger results. For people with mild to moderate symptoms, regular physical activity can serve as a standalone treatment. For more severe depression, it works well as an add-on to therapy or medication.
Brain Stimulation: TMS
Transcranial magnetic stimulation (TMS) uses magnetic pulses to stimulate nerve cells in areas of the brain involved in mood regulation. It was FDA-cleared for people with major depression who haven’t improved after at least one antidepressant, making it a second-line option for treatment-resistant cases.
A standard course involves at least 25 sessions, typically given daily over several weeks. You sit in a chair, a device is positioned against your scalp, and each session lasts around 20 to 40 minutes. It’s non-invasive and doesn’t require anesthesia. In a real-world study of 89 patients receiving TMS alongside their usual medication, 37% achieved a treatment response (at least 50% improvement in symptoms) by the end of the TMS course, and about 19% reached full remission. Those numbers may sound modest, but these are patients for whom standard medication had already failed.
Electroconvulsive Therapy
ECT remains the most effective treatment available for severe, treatment-resistant depression. It works by delivering brief electrical pulses to the brain under general anesthesia, triggering a controlled seizure that appears to reset certain brain circuits. Despite its reputation, modern ECT is far removed from its historical portrayal.
A large study by the Consortium for Research on Electroconvulsive Therapy involving 311 patients found remission rates between 62% and 79%, depending on the type of depression. Even among patients with severe treatment resistance, remission rates exceeded 50%. ECT is typically used when depression is life-threatening (active suicidal behavior, refusal to eat) or when multiple other treatments have failed. A typical course is 6 to 12 sessions over several weeks. The most common side effect is short-term memory difficulty around the time of treatment, which usually improves in the weeks after the course ends.
Esketamine Nasal Spray
Esketamine is a nasal spray approved for two specific situations: treatment-resistant depression and major depression with active suicidal thoughts or behavior. It works through a different brain pathway than traditional antidepressants, and its effects can begin within hours rather than weeks.
The catch is that it must be administered in a certified medical facility. You spray the medication yourself, but you’re required to stay for at least two hours afterward so healthcare staff can monitor for side effects like dissociation (a feeling of being detached from yourself), drowsiness, or blood pressure changes. For treatment-resistant depression, the schedule starts at twice per week for the first month, drops to once per week for the next month, then tapers to every one or two weeks for maintenance. It’s always used alongside an oral antidepressant, not on its own.
Herbal Supplements: St. John’s Wort
St. John’s wort is the most studied herbal remedy for depression, and evidence supports that it can help with mild to moderate symptoms when taken in appropriate doses for up to 12 weeks. It’s available over the counter in most countries.
The serious concern with St. John’s wort is drug interactions. Taking it alongside an SSRI, SNRI, or other serotonin-affecting medication can cause a dangerous buildup of serotonin, a condition called serotonin syndrome that ranges from mild (agitation, diarrhea) to severe (muscle rigidity, high fever, seizures). It also reduces the effectiveness of bupropion and interacts with migraine medications called triptans. If you’re taking any prescription medication, St. John’s wort is not something to add casually. It also interferes with birth control pills, blood thinners, and several other common drugs.
Choosing the Right Approach
Mild depression often responds well to therapy alone or regular exercise. Moderate depression typically benefits from therapy, medication, or both. Severe or treatment-resistant depression may require more intensive options like TMS, esketamine, or ECT. These aren’t rigid categories, and many people move through different treatments as they learn what works for their particular situation.
The most important practical takeaway from the research is that combination approaches tend to outperform single treatments, and that the skills learned in psychotherapy provide lasting protection against relapse in a way that medication alone does not. Starting with both therapy and medication, when symptoms warrant it, gives you the best odds of recovery and the best odds of staying well.