Depression is treated with psychotherapy, medication, or a combination of both, and most people improve significantly with the right approach. The best option depends on the severity of your symptoms, your personal preferences, and how your body responds. For moderate to severe depression, combining therapy and medication tends to produce the strongest results.
Psychotherapy
Talk therapy is one of the most effective treatments for depression, and two approaches have the strongest evidence behind them: cognitive behavioral therapy (CBT) and interpersonal therapy (IPT). CBT focuses on identifying and changing negative thought patterns that fuel depression. You learn to catch distorted thinking, like catastrophizing or all-or-nothing reasoning, and replace it with more realistic interpretations. IPT takes a different angle, focusing on relationship conflicts, life transitions, and social isolation that may be driving your symptoms.
Both produce similar outcomes. A randomized trial found that depression scores dropped significantly with either approach, with a large effect size of 1.45, meaning the average person improved substantially. Notably, telehealth delivery worked just as well as in-person sessions, so remote therapy is a legitimate option if access is an issue.
Therapy typically involves weekly sessions over 12 to 20 weeks, though brief versions (8 sessions or fewer) also show clear benefits. Some people notice shifts within the first few weeks, while deeper changes in thinking and coping patterns develop over months. The skills you learn in therapy tend to have lasting protective effects against relapse, which is one advantage over medication alone.
Antidepressant Medication
Antidepressants work by adjusting brain chemicals involved in mood regulation. The most commonly prescribed are SSRIs, which raise serotonin levels, and SNRIs, which raise both serotonin and norepinephrine to improve mood, stress response, and alertness. A third category, atypical antidepressants, works through various other pathways. Your doctor will typically start with an SSRI because they tend to have the most manageable side effect profile.
The hardest part of antidepressants is the timeline. You might notice small changes in the first week or two, things like improved sleep or slightly more energy, but the full mood-lifting effect takes several weeks to develop. This waiting period is one of the most common reasons people stop taking their medication too early. If one medication doesn’t help after six to eight weeks at the right dose, switching to a different one or adding a second medication is standard practice.
Side effects vary by drug class but commonly include drowsiness, dry mouth, nausea, headache, weight gain, sexual difficulties, dizziness, and sleep changes. Many of these are worst in the first couple of weeks and then ease off. If side effects are intolerable, a different medication in the same class or a switch to a different class often helps. Stopping antidepressants abruptly can cause withdrawal-like symptoms, so tapering down gradually with your prescriber’s guidance is important.
How Long Treatment Lasts
Most guidelines recommend continuing antidepressants for at least six to nine months after your symptoms resolve. For people with recurrent episodes, longer-term or even indefinite treatment may be appropriate. The reason is straightforward: depression has a high relapse rate, and stopping medication shortly after feeling better significantly increases the risk of symptoms returning.
Therapy follows a similar logic. Even after your mood has stabilized, a few additional sessions focused on relapse prevention can help you recognize early warning signs and respond before a full episode develops.
Exercise as Treatment
Exercise is not just a lifestyle recommendation. A large network meta-analysis published in the BMJ found that physical activity produces moderate reductions in depression across multiple forms: walking or jogging, yoga, strength training, mixed aerobic exercise, and tai chi all showed meaningful effects. Walking and jogging had the largest effect, followed closely by yoga and strength training.
Intensity matters. Vigorous exercise like running or interval training produced stronger benefits than lighter activities, though even light exercise like walking or gentle yoga still had clinically meaningful effects. Interestingly, shorter programs (around 10 weeks) worked somewhat better than longer ones, and the benefits held regardless of how many days per week people exercised. This means even two or three sessions a week can make a real difference, and you don’t need to commit to a marathon training plan to see results.
Exercise works best as an add-on to therapy or medication rather than a replacement, particularly for moderate to severe depression. For mild depression, it may be sufficient on its own.
When Standard Treatments Don’t Work
Treatment-resistant depression is formally defined as depression that hasn’t improved after trying at least two different antidepressants, each at an adequate dose for at least six to eight weeks. Roughly one-third of people with depression don’t respond fully to initial treatments, so this is more common than many people expect.
Electroconvulsive therapy (ECT) is one of the most established options for treatment-resistant cases. It involves brief electrical stimulation of the brain under general anesthesia, typically three times a week for about four weeks (12 sessions total). Response rates in community settings are around 54%, with about 31% achieving full remission. ECT has a reputation that doesn’t match the modern experience: the procedure itself takes minutes, you’re asleep the entire time, and the most common side effect is temporary memory difficulty around the time of treatment.
Esketamine, a nasal spray derived from ketamine, was approved by the FDA for treatment-resistant depression and is also used for people with major depression who have acute suicidal thoughts. Unlike traditional antidepressants that take weeks to work, esketamine can produce noticeable mood improvement within hours to days. During the induction phase, you receive treatment twice a week for four weeks, then taper to once weekly or every two weeks. Each session happens in a medical office because the medication can cause temporary sedation, dissociation (a feeling of being detached from your surroundings), and blood pressure changes. You’re monitored for at least two hours after each dose before going home.
Combining Approaches
For most people with moderate to severe depression, a combination of psychotherapy and medication outperforms either one alone. The medication helps stabilize brain chemistry enough for you to engage more effectively in therapy, while therapy gives you tools to address the thought patterns, behaviors, and life circumstances that medication alone can’t fix.
There’s no single correct sequence. Some people start with therapy and add medication if progress stalls. Others begin medication first and add therapy once they have enough energy and focus to participate. If your depression is mild, starting with therapy or structured exercise alone is reasonable. If symptoms are severe, starting with medication and therapy simultaneously gives you the best chance of a faster recovery.
Finding the right treatment often involves some trial and adjustment. About half of people respond well to their first antidepressant, and most of the rest find relief with a second or third option. The same applies to therapy: if one approach doesn’t click, a different modality or a different therapist can make a significant difference. The key factor in outcomes is staying with treatment long enough for it to work rather than cycling through options too quickly.