Are you thinking of starting antidepressants? Many people are curious about how long it will take for the medicine to “kick in” and for them to start feeling better. However, the answer, unfortunately, isn’t straightforward.
For some people, antidepressants may offer relatively rapid relief from depression symptoms in just a few hours. For others, they may need to wait several weeks before they start feeling the mood-enhancing effects. It’s important to remember that everyone’s experience with antidepressant medication is different, so don’t get discouraged if you don’t feel results right away, as you simply may have a more delayed reaction compared to others.
Here’s everything you need to know about how long antidepressants take to alleviate depression symptoms.
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What Are Antidepressants?
Antidepressants are a type of psychiatric medication used to treat depression, anxiety disorders, and various other mood disorders. They work by correcting imbalances of certain brain chemicals, such as serotonin and norepinephrine, which play an important role in regulating mood.
Antidepressants are often taken in the form of pills, but there are also other forms of depression treatment that are effective. For example, some people may benefit from transcranial magnetic stimulation (TMS) therapy for depression — a non-medication antidepressant therapy — or ketamine therapy, which is available as an IV drip or the nasal spray, Spravato.
What kinds of antidepressant medications are there?
There are many different types of antidepressant medications, with the most common being selective serotonin reuptake inhibitors (SSRIs). Other types of antidepressant medications include:
- Serotonin and norepinephrine reuptake inhibitors (SNRIs).
- Tricyclic antidepressants (TCAs).
- Monoamine oxidase inhibitors (MAOIs).
There is no single antidepressant that is better than another. Rather, finding the right antidepressant is often a process of trial and error, and it may be necessary to try several antidepressants or doses before experiencing maximum benefit.
Related: Best Antidepressant for Teens
How Do Antidepressant Medications Work?
Antidepressants work by balancing chemicals in your brain called neurotransmitters, which help regulate your mood and emotions. When these chemicals are out of balance, you may experience depression, anxiety, or other mental health conditions. Antidepressants block the reabsorption of these neurotransmitters into your brain cells so they can continue to impact your mood and emotions positively.
How fast do antidepressants work?
Typically, antidepressants have a “ramp up” period of 4 to 6 weeks to experience their full effect. However, just like there are different types of antidepressants, there are also different timelines for how long they take to work. How long it will take for you to experience the benefits of a medication depends largely on your unique body chemistry, the antidepressant type and dose, your depression diagnosis, and the severity of your symptoms.
Everybody’s experience with antidepressants and the time it takes to feel the onset of effects can differ, and some people may not start to experience the full benefits of the medication until after several weeks or months. According to the American Psychiatric Association (APA), on average, antidepressants begin working after 4 to 6 weeks.1 It’s important to be patient and to continue taking the medication as prescribed, even if it doesn’t seem to be working right away.
If after a few weeks your antidepressant isn’t working or if your symptoms are progressively worsening, consult your psychiatrist. They may want to adjust your dose or try a different type of antidepressant altogether.
Related: How To Feel Better Faster With Fast-Acting Antidepressants
What Are the Benefits of Antidepressants?
While the timeline for how long it takes antidepressants to work may vary, there are many potential benefits of taking these medications. Antidepressants can help to improve mood, energy levels, sleep, and appetite. They can also help to reduce feelings of anxiety and stress, and in some cases, antidepressants can even help relieve suicidal thoughts.
Like with most medications, there can be potential risks and side effects associated with taking antidepressants, so be sure to talk to your doctor about whether antidepressants are right for you.
Related: Can Antidepressants Make Me Fall Out of Love?
What Are the Possible Side Effects of Antidepressants?
The most common side effects of antidepressants include:
- Nausea.
- Dizziness.
- Drowsiness.
- Dry mouth.
- Sexual side effects.
- Weight gain or loss.
Some people may also experience more serious side effects, such as:
- Increased anxiety or agitation.
- Headaches.
- Trouble sleeping.
- Changes in heart rate or blood pressure.
Despite the potential side effects, many people find that the benefits of using antidepressants outweigh the risks — an assessment that can ultimately be informed by a mental health professional. Additionally, there are a number of ways to manage the side effects of antidepressants. If you’re experiencing side effects from your medication, your doctor may be able to adjust your dose or switch you to a different medication.
The black box warning on antidepressants
The FDA requires antidepressants to feature a black box warning, which alerts patients of the most dangerous potential side effects. For antidepressants, this includes an increased risk of suicidal thoughts or behaviors, particularly affecting those 25 years and younger during the initial treatment period. If you experience worsening depression symptoms or increased severity of suicidal thoughts, contact your mental health provider immediately.
Related: What Are the Phases of SSRI Withdrawal?
Considerations Before Starting Antidepressants
When it comes to treating depression, there is no one-size-fits-all approach. Antidepressants can be life-changing for some, but they don’t work for everyone. In general, the benefits of adequately treating depression symptoms — whether that’s with an oral antidepressant or an alternative depression treatment like TMS therapy — outweigh the potential risks.
It’s important to know that you can still consider antidepressant medication if:
- You have mild depression: For any severity of depression, first-line treatments like talk therapy and behavioral modifications are generally the best place to start. However, if symptoms persist, then antidepressant medication is a safe, effective option.
- You’re trying to get pregnant: If you are trying to conceive, you should talk to your doctor about your current medications, including antidepressants. Some antidepressant medications are teratogenic — considered harmful to the developing fetus. However, it’s important to discuss your specific health needs with your provider before making changes to your treatment.
- You’re pregnant or breastfeeding: In California, 1 in 5 women suffers from perinatal depression or other mood and anxiety disorder.2 While postpartum depression is commonly known for occurring after birth, 50% of perinatal major depressive episodes actually begin prior to delivery. If you’re expecting or breastfeeding, you should talk to your doctor about the risks and benefits of your current medications, as well as your alternative options, like TMS during pregnancy.
- You have a history of substance use: In many cases, substance use co-occurs with depression or another mental health condition, and successful, long-term recovery requires the effective treatment of both. If you’re struggling with depression and have a history of substance use like alcoholism, or if you are actively misusing substances, talk to your doctor about the risks and benefits of antidepressant medication.
If you’re not sure whether you should take antidepressant medication, talk with your psychiatrist. They can help you decide if antidepressant treatment is best for your unique symptoms, health history, and mental health goals.
Related: Lithium for Depression
Will Antidepressants Fix My Depression?
Depression is a chronic illness that can go into remission and never recur. However, some may experience a depression relapse. Currently, there is no cure for depression, but there are several safe and effective treatment options that can help patients achieve full remission. Antidepressants, including SSRIs and other types, can be life-changing, but they don’t work for everyone.
The good news? Oral medications are not the only options for depression treatment. If you’ve tried an oral antidepressant medication and are experiencing lingering symptoms or unwanted side effects, talk to your doctor about available treatment options.
Related: The Newest Antidepressants Offering Hope
How Neuro Wellness Spa Can Help You Find Expert, In-network Psychiatrists in California
At the end of the day, only you and your provider can decide if antidepressants are right for you. It’s important to talk with your psychiatric practitioner about the risks and benefits of taking medication. Be sure to ask about side effects and other treatments that may be available. Medication isn’t right for everyone, but for some people with mental health disorders such as anxiety, depression, ADHD, and OCD, the results can be profound.
At Neuro Wellness Spa, our no-pressure psychiatrists offer in-person and online medication management appointments. In your initial consultation, your psychiatrist will review your symptoms, mental health history, and prescriptions to work alongside you to determine whether medications or a non-pharmaceutical alternative, like TMS therapy or psychotherapy, might work for you. Contact us to get started today.
References
- American Psychiatric Association. (2010). Treating major depressive disorder [Quick Reference Guide]. In A Quick Reference Guide. https://psychiatryonline.org/pb/assets/raw/sitewide/practice_guidelines/guidelines/mdd-guide-1410457165213.pdf
- Moon, J. (2025, October 6). Improving maternal mental health care. California Health Care Foundation. https://www.chcf.org/resource/improving-maternal-mental-health-care/