Depression, Alcohol & Cannabis: Do Antidepressants Help?
If you feel depressed and also drink alcohol or use cannabis, it can be difficult to know what to treat first. Is the substance use causing the low mood, is depression driving the use, or are both problems happening together? And would an antidepressant help?
The short answer is that an antidepressant may be appropriate for some people, but it should not be the only treatment considered. A clinician needs to assess your mood symptoms, substance use, physical health, medication interactions, and safety. Depression treatment and support for alcohol or cannabis use can often begin together. You do not have to solve one problem completely before asking for help with the other.
This guide explains what research shows, where the evidence is uncertain, and what to discuss with a healthcare professional before starting medication.
Can alcohol or cannabis cause symptoms of depression?
Yes. Heavy or frequent drinking can disrupt sleep, increase anxiety, reduce energy, and contribute to persistent low mood. Cannabis can also affect sleep, motivation, and mood, particularly with frequent use or during withdrawal. These effects can overlap with symptoms of major depressive disorder.
Clinicians distinguish between substance-induced depressive symptoms and an independent depressive disorder. The distinction is not always clear at the first appointment. A person may have had depression before using substances, developed symptoms while using heavily, or have both conditions at the same time.
A careful assessment considers when symptoms began, how they change with use or withdrawal, previous periods of lower use or abstinence, other health conditions, and any history of depression. Mood sometimes improves after alcohol or cannabis use decreases, but not everyone improves simply by stopping. Clinicians should not dismiss severe or persistent depression as “just the drinking” or “just the cannabis.”
Should you wait until you are sober before treating depression?
Not necessarily. A period of reduced use or abstinence may help clarify the diagnosis when it is medically safe and practical. However, waiting for perfect sobriety can leave serious symptoms untreated, and depression itself may make it harder to change substance use.
Integrated care means addressing mood symptoms and substance use within a coordinated treatment plan, ideally with clinicians who communicate. This can include psychotherapy, practical support for changing substance use, and medication when the expected benefits outweigh the risks. If depression is severe, daily functioning is seriously impaired, or there are suicidal thoughts, assessment should be prompt rather than postponed for a trial of abstinence.
Important alcohol safety note: If you drink heavily or experience withdrawal symptoms, do not suddenly stop without medical advice. Alcohol withdrawal can cause seizures and other life-threatening complications. Ask a clinician whether supervised withdrawal treatment is needed. [1]
Do antidepressants work when someone is still drinking?
Antidepressants can improve symptoms in some people who have depression and alcohol use disorder, but the average benefit in studies is modest and the certainty of evidence is limited. A Cochrane review of 33 studies found low-quality evidence of some reduction in depression severity, with weaker conclusions after accounting for study quality. Antidepressants should not be relied on to treat alcohol use disorder itself. [2]
There is also no universal rule that selective serotonin reuptake inhibitors (SSRIs) are the best option in every person who drinks. Guidance differs. For example, the Canadian alcohol use disorder guideline recommends against routinely prescribing SSRIs to people with alcohol use disorder and co-occurring depression or anxiety, because some people may experience poorer alcohol-related outcomes. Decisions about treating a diagnosed depressive disorder still require individual clinical judgment and consideration of alternatives. [3]
The practical question is not simply “Which antidepressant should I take?” It is “What combination of care addresses the depression, drinking, risks, and goals in my situation?” A prescriber may recommend therapy, medication for alcohol use disorder, an antidepressant when indicated, or a combination.
What treatments help with depression and alcohol use disorder?
Therapy that addresses both problems
Cognitive behavioral therapy (CBT) can help people identify patterns between mood, triggers, thoughts, and drinking. It can also build coping skills for low mood and relapse prevention. A 2021 review of 36 randomized trials found potentially useful benefits for CBT and some medications, while stressing that confidence in many treatment estimates was low. The findings support tailoring care rather than expecting one treatment to work for everyone. [4]
Medication specifically for alcohol use disorder
Evidence-based alcohol use disorder treatments include naltrexone and acamprosate. Naltrexone can reduce the rewarding effects of alcohol and may be started while a person is still drinking in appropriate circumstances. Acamprosate is generally used to help maintain abstinence after drinking stops. These medicines address alcohol use disorder, not depression itself, and require a medical review for suitability. For example, naltrexone must not be used with opioid medicines or opioid use, and kidney function matters when considering acamprosate. [1]
What the sertraline and naltrexone study actually found
One frequently cited 14-week trial studied 170 adults with both major depression and alcohol dependence. Everyone received weekly CBT and was assigned to sertraline, naltrexone, both, or placebo. In that specific study, 53.7% of participants given sertraline plus naltrexone remained abstinent, compared with 27.5% on sertraline alone, 21.3% on naltrexone alone, and 23.1% on placebo. The combination also delayed heavy-drinking relapse. [5]
Those results are encouraging but do not mean the combination is the best choice for every patient. It was one trial in a specific population, and broader guidelines and reviews remain more cautious. A professional should assess the type and severity of depression, drinking pattern, other medicines, and health risks before recommending a treatment.
Do antidepressants help if you use cannabis?
The evidence is weaker for treating cannabis use disorder with medication. A systematic review of 26 trials found that SSRIs did not meaningfully reduce cannabis use or improve treatment retention. There is currently no established, approved medication specifically for cannabis use disorder in the United States. [6]
That does not mean someone using cannabis can never benefit from an antidepressant. If they have an independently diagnosed depressive disorder, a prescriber may still consider medication for the depression. The important distinction is that treating depression with medication is not the same as treating cannabis use disorder. Alcohol, cannabis, and prescribed medicines may also interact or compound side effects, so disclose what you use and how often.
For problematic cannabis use, psychological approaches remain central. These may include motivational enhancement therapy, CBT, contingency management, and other structured behavioral treatments. The right approach depends on a person's needs, goals, and access to care. No single therapy works for everyone.
Where individual and group therapy fit
Therapy is not an optional extra when depression and substance use reinforce each other. In individual sessions, a therapist can explore personal triggers, relationships, routines, trauma-related concerns, and patterns of using alcohol or cannabis to manage difficult feelings. Group therapy can add social support, connection, accountability, and opportunities to practice coping skills with others who understand the experience.
A 2019 meta-analysis covering 33 randomized trials and nearly 4,000 adults found small short-term benefits of group psychotherapy on some substance-use outcomes, as well as improved mental health compared with no treatment. The authors cautioned that effects were not uniform across measures. [7]
When might a clinician consider starting an antidepressant?
An antidepressant may be considered when depression is persistent, clearly predates heavy substance use, occurs during periods without substance use, is significantly impairing daily life, or remains severe while substance-use treatment begins. A clinician will also screen for bipolar symptoms, previous medication responses, other diagnoses, pregnancy-related considerations when relevant, and possible medication or substance interactions.
Medication selection matters. For instance, bupropion can increase seizure risk, which is especially important when alcohol withdrawal is possible. Sedating medicines, some antidepressants, and alcohol or cannabis can also impair alertness or worsen adverse effects. Do not start, stop, combine, or change doses on your own. If you already take an antidepressant, tell your prescriber about your current use rather than abruptly discontinuing the prescription.
How to make a safe treatment plan
Start with a complete assessment. Describe your symptoms, how much and how often you drink or use cannabis, whether you have experienced withdrawal, and every prescription, over-the-counter medicine, or other substance you take. Be candid about your goals: reducing use, stopping, improving mood, or simply understanding your options.
Next, make sure both conditions have a plan. Treatment might involve weekly CBT, individual or group support, medication for alcohol use disorder when appropriate, follow-up for depressive symptoms, and a decision about antidepressants based on a fuller diagnosis. Your clinician may also discuss sleep, physical health, support at home, and how progress will be monitored.
Finally, agree on when to reassess. Mood can change as drinking or cannabis use changes. Treatment should be adjusted based on symptoms, function, side effects, safety, and your preferences, rather than judged only by whether you have stopped using a substance.
Questions to ask your doctor or mental health professional
• Could my symptoms be substance-induced depression, major depression, or both?
• Is it medically safe for me to reduce or stop alcohol without supervision?
• Would CBT, group therapy, or medication for alcohol use disorder be useful for me?
• If we consider an antidepressant, what benefits, interactions, and side effects should I watch for?
• When should we review my mood, drinking or cannabis use, and treatment response?
Frequently asked questions
Can you take an antidepressant if you drink alcohol?
Sometimes, but it depends on your medication, amount of alcohol, medical history, and diagnosis. Alcohol can worsen depression and increase medication-related risks. Discuss drinking openly with your prescriber and follow the specific medication advice you receive.
Does cannabis make antidepressants less effective?
The answer is not established for every antidepressant or pattern of cannabis use. Cannabis may affect symptoms, alertness, and the metabolism of some medicines. Tell your clinician which cannabis products you use, including THC or CBD, their strength when known, and how frequently you use them.
Will depression go away if I stop drinking or using cannabis?
Some substance-related mood symptoms improve as use decreases or stops, but depression can also be an independent condition. Persistent, severe, or worsening symptoms deserve assessment, even if you have recently changed your use.
Can depression and addiction be treated at the same time?
Yes. Coordinated care can address both conditions, using psychotherapy, substance-use treatment, and medication where appropriate. You do not need to achieve complete sobriety before asking for a mental health evaluation.
What if I have withdrawal symptoms or thoughts of suicide?
Severe alcohol withdrawal is a medical emergency. Symptoms such as seizures, confusion, or hallucinations require urgent medical care. If you might harm yourself or cannot stay safe, contact local emergency services now. In the United States, call or text 988 for free, confidential crisis support. For non-emergency help finding treatment, speak with a healthcare professional or a local substance-use treatment service.
The bottom line
Depression with alcohol or cannabis use is rarely a question of “take an antidepressant” versus “get sober first.” Some people benefit from antidepressants, but medication alone does not reliably address problematic drinking or cannabis use. Therapy and targeted substance-use treatment are important, and treatment decisions should be individualized.
If this sounds familiar, the most useful first step is a conversation with a qualified healthcare professional who can assess both your mood and your substance use without judgment.
References and further reading
Medical disclaimer
This article is for general educational purposes and does not replace medical advice, diagnosis, or treatment. Decisions about antidepressants, drinking, cannabis, or withdrawal management should be made with a qualified clinician who knows your medical history. In an immediate emergency, contact your local emergency services.
