Does CBD Interact With Antidepressants and SSRIs? What To Know

Written & posted by Ingrid Ferris

If you’re taking an antidepressant, you may have wondered whether you can add CBD to your routine to support your overall wellness. Maybe you’re interested in CBD for winding down at night, managing everyday stress, or simply seeing how it could fit alongside the routine you already have. 

Here’s the thing most people don’t know: CBD can interact with certain antidepressants. That doesn’t mean that taking an antidepressant pushes CBD off the table. It simply means that some antidepressants and CBD affect some of the same processes in the body, and there are a few things worth understanding before combining them. 

So, how exactly does CBD interact with antidepressants and SSRIs? Below, we’ll break down where potential interactions come from, which antidepressants deserve a closer look, and how to have a more informed conversation with your healthcare provider.

Quick Overview: CBD Oil, Antidepressants, and Drug Interactions

CBD, or cannabidiol, is a naturally occurring cannabinoid found in hemp. Unlike THC, CBD isn’t generally considered intoxicating, which is one reason people explore CBD products for everything from everyday stress to sleep and chronic pain. (Learn more in our article, “Why THC Gets You High and CBD Doesn’t.”)

Antidepressants are prescription medications used to treat depression, anxiety disorders, and other mental health conditions. Selective serotonin reuptake inhibitors (SSRIs) are among the most commonly prescribed. However, other classes include SNRIs, tricyclic antidepressants (TCAs), and monoamine oxidase inhibitors (MAOIs).

Now to answer the question: CBD can interact with certain antidepressants and SSRIs.

The reason CBD and certain antidepressants can interact largely comes down to how they’re processed in the body. Many medications are metabolized with help from the cytochrome P450 (CYP450) enzyme system in the liver, and CBD can affect the activity of some of these same enzymes. In certain cases, that may change how quickly an antidepressant is broken down.

Not every antidepressant is affected in the same way, though. The specific medication, CBD dose, and your individual metabolism all matter, which is why the exact antidepressant you’re taking tells us much more than the word antidepressant alone.

How Antidepressants Work

Antidepressants work in different ways depending on their drug class, but many affect neurotransmitters involved in mood, including serotonin and norepinephrine. Selective serotonin reuptake inhibitors specifically work by blocking some of the reabsorption, or reuptake, of serotonin. This leaves more serotonin available between the nerve cells. Common SSRIs include sertraline (Zoloft), citalopram (Celexa), escitalopram (Lexapro), fluoxetine (Prozac), and paroxetine (Paxil).

Other antidepressants work a little differently:

• SNRIs affect the reuptake of both serotonin and norepinephrine. 
• Tricyclic antidepressants also influence neurotransmitters but act on several other receptors, contributing to a broader side-effect and interaction profile.
• MAOIs inhibit an enzyme involved in breaking down neurotransmitters and have several well-established food and medication interactions.

The liver plays an important role here because many antidepressants are broken down by CYP450 enzymes. CBD can affect several of these enzymes, which creates the possibility of drug interactions. 

How Can CBD Oil Interact with Antidepressants?

Think of liver enzymes as part of the body’s medication-processing system. They help break down drugs so they can eventually be cleared from your body. And when we talk about interactions, we’re often talking about how the body processes both CBD and medications.

Your liver contains enzymes that help break down medications so they can eventually be cleared from your body. CBD can affect several of these CYP450 enzymes, including CYP2C19. If CBD slows an enzyme that also helps metabolize a particular antidepressant, that medication may stay in the body a little longer or reach a different concentration than expected. 

How much that matters depends on the medication and the person. Some antidepressants rely more heavily on enzymes affected by CBD than others, and factors like your CBD dose, how often you use it, other medications or supplements, and your individual metabolism can all influence the potential interaction. We cover this more in depth in our article, “Why CBD Affects People Differently.”

You may have heard this general concept compared with grapefruit juice. Grapefruit can also change how the body metabolizes certain medications, which is why some prescriptions come with instructions to avoid it. CBD and grapefruit don’t affect every enzyme or medication the same way, but the comparison can make the basic idea easier to understand: sometimes another substance simply changes how quickly your body processes a medication.

That’s why taking an antidepressant doesn’t give us a simple yes-or-no answer about CBD. The more useful question is which antidepressant you’re taking and whether its metabolism could be affected by CBD.

Does CBD Interact with SSRIs?

SSRIs are among the most commonly prescribed antidepressants, so they’re often at the center of the CBD-and-antidepressant conversation. As we covered above, the potential for an interaction largely comes down to metabolism. Different SSRIs rely on different CYP450 enzymes to varying degrees, and CBD may affect some of those same pathways. That means that, for certain medications, taking CBD could change how quickly the body processes the antidepressant.

We do have some early research demonstrating this possibility. In a small study involving people taking citalopram or escitalopram, researchers found that adding CBD increased citalopram concentrations. However, the study included only 6 participants, and the researchers emphasized that more clinical research is needed to understand what those changes mean.

There’s also a published case report involving sertraline and CBD. Researchers proposed that CBD affected sertraline metabolism in a patient with a particular CYP2C19 genetic profile. Again, though, this was a single case and isn’t evidence that everyone taking sertraline and CBD will experience the same effect.

The takeaway? CBD interactions can look different from one SSRI and one person to the next. If CBD increases the amount of an antidepressant in the body, it could potentially make familiar medication side effects more noticeable. This is one reason it’s helpful to discuss your specific prescription, CBD product, and intended dose with your doctor rather than treating all SSRIs as interchangeable.

What About Serotonin Syndrome?

If you’ve searched for CBD interactions with SSRIs before, there’s a good chance you’ve come across the term “serotonin syndrome.” While the name sounds alarming, context here is important.

Serotonin syndrome occurs when serotonin levels in the body become excessively high. It’s most often associated with taking medications or combinations of substances that increase serotonin, particularly when a new medication is introduced or a dose is increased.

However, the relationship between CBD, SSRIs, and serotonin is still being studied. CBD interacts with the serotonin system, including the 5-HT1A receptor, while SSRIs increase serotonin availability through a different mechanism. As we mentioned above, CBD may affect the metabolism of certain SSRIs, potentially changing the amount of medication in the body.

However, that doesn’t mean taking CBD with an SSRI will cause serotonin syndrome. Research directly examining CBD and antidepressant interactions in people is still limited, and the interaction can vary considerably. The better takeaway is to make sure your healthcare provider knows about your CBD use alongside any medications or supplements that affect serotonin.

Does CBD Interact with TCAs and MAOIs?

SSRIs may get most of the attention, but they’re only one category of antidepressant. If you take another type, the same general principle applies; what matters is how your particular medication is metabolized and how CBD could affect that process.

SNRIs, such as duloxetine (Cymbalta) and venlafaxine (Effexor), affect both serotonin and norepinephrine. The liver also metabolizes these medications, although the enzymes involved vary. Tricyclic antidepressants (TCAs) are an older class of antidepressant medication that includes drugs such as amitriptyline and nortriptyline. Because TCAs can have more significant effects when their concentrations change, potential interactions deserve careful consideration.

MAOIs work through a different mechanism altogether and already come with specific guidance surrounding other medications, supplements, and even certain foods. If an MAOI is part of your treatment plan, adding CBD or another cannabinoid is something to discuss directly with your healthcare provider.

Ultimately, there isn’t one universal “CBD and antidepressant” interaction. Different antidepressants are processed differently, which is why knowing the name and dose of your medication is much more useful than simply knowing its drug class.

Potential Side Effects to Pay Attention To

If your healthcare provider is comfortable with you using CBD alongside an antidepressant, paying attention to how you feel can help you notice whether anything has changed. CBD and antidepressants can share some potential side effects, including:

• Drowsiness or fatigue
• Dizziness
• Nausea or digestive changes
• Headaches
• Changes in alertness

Experiencing one of these symptoms doesn’t automatically mean CBD is interacting with your medication. Side effects can have many causes, and some may already be associated with the antidepressant itself. What’s more useful is noticing new symptoms or meaningful changes from your normal baseline, especially after adding CBD or adjusting your dosage.

Of course, severe or rapidly worsening symptoms are a different story. Significant confusion or agitation, fainting, seizures, high fever, pronounced muscle rigidity or tremors, or an irregular heartbeat should receive prompt medical attention.

At Myriam’s Hemp, we’ve covered a lot more than CBD and antidepressants. You can learn more by reading our guides like “Can CBD Help with Migraines?” and “How CBD Can Alleviate PMS Symptoms.”

Taking Other Medications and Supplements with CBD

When considering potential CBD interactions, your antidepressant is only one piece of the picture. Prescription medications, over-the-counter drugs, and supplements can all influence how substances are processed in the body. That’s why it’s helpful to look at your whole routine rather than evaluating CBD and your antidepressant in isolation. 

If you take other medications regularly, your pharmacist can review them together and identify whether any rely on the same liver enzymes or have overlapping effects. And don’t forget about herbal supplements! St. John’s Wort, for example, can affect drug metabolism and serotonin and is known to interact with many medications, including antidepressants.

When you talk to your doctor or pharmacist, bring a complete list of what you use, including vitamins, supplements, OTC medications, CBD, and other cannabis products. The more complete the picture, the easier it is for them to evaluate possible interactions based on your routine rather than general guidelines.

CBD, THC, and Mental Health: Why Formula Type Matters

CBD and THC may come from the same plant family, but they don’t affect you in exactly the same way. More specifically, CBD is non-intoxicating, while THC is responsible for the familiar “high” associated with cannabis. That distinction may matter when you’re already managing depression, anxiety, post-traumatic stress disorder (PTSD), or another mental health condition.

Some find THC a relaxing addition to their routine, while others may experience unwanted effects such as increased anxiety. Your individual response, THC dose, and product all make a difference. It’s also one reason to know exactly which cannabinoids are in the product you’re using rather than treating every hemp extract as interchangeable. (Learn more by reading “Hemp vs. Cannabis Oil – Basic Differences.”)

At Myriam’s Hemp, we offer several cannabinoid formulas with clearly labeled concentrations and third-party testing. If avoiding THC is important to you, we offer oils such as our THC-Free Daily 25 CBD, which contains 750+ mg CBD per fluid ounce alongside other phytocannabinoids, terpenes, and flavonoids. Additionally, if avoiding THC is important to you, we can custom-make most of our tinctures to be THC-free. Simply contact our team to ask about a THC-free or isolate version of the formula you’re using.

One important distinction before moving on: choosing a THC-free product doesn’t eliminate the possibility of a CBD-medication interaction. If CBD is still present, the same metabolism considerations still apply. Instead, a THC-free formula gives you an option when you specifically prefer CBD without THC as part of the equation.

Does CBD Matter After Discontinuing Antidepressants?

There isn’t a universal amount of time you need to wait after stopping an antidepressant before taking CBD. Different depression medications have different half-lives, so the amount of time they remain in the body can vary. 

There’s another reason not to create an absolute timeline: antidepressant discontinuation itself can cause symptoms. Depending on the medication, stopping too quickly may lead to dizziness, nausea, sleep changes, anxiety, mood swings, or other withdrawal symptoms.

If you’re already tapering off an antidepressant with your healthcare provider, ask them when introducing CBD makes sense for your treatment plan. Introducing changes thoughtfully can make it easier to tell whether a new symptom is related to medication withdrawal, CBD, or something else entirely.

Most importantly: don’t stop or change your antidepressant dose specifically to begin CBD unless your prescriber has recommended doing so.

How to Approach CBD While Taking Antidepressants

If you and your doctor decide CBD makes sense alongside your current treatment, the process doesn’t have to be overly complicated. A thoughtful approach can make it easier to understand how CBD fits into your existing routine. A few practical habits can include:

• Know what you’re taking. Bring the exact CBD product, cannabinoid profile, and concentration to your doctor or pharmacist rather than asking about “CBD” in general. 
• Start low. Your healthcare professional may suggest beginning with a smaller amount, particularly if CBD is new to you. (You can find guidance in our article, “How to Safely Use CBD.”)
• Give yourself time. Avoid making several changes to your CBD routine at once. 
• Keep track of how you feel. Note your CBD dose and timing along with any meaningful changes in sleep, mood, energy, digestion, or medication side effects. 
• Keep your provider in the loop. If something feels noticeably different after introducing CBD, let them know rather than trying to troubleshoot things yourself.

Choose a CBD Product You Can Actually Evaluate

When prescription medications are already part of your routine, transparency becomes especially useful. You want to know how much CBD you’re taking, what other cannabinoids are present, and whether the product’s contents have been independently tested. 

That’s why Myriam’s Hemp provides access to third-party lab results and clearly identifies cannabinoid concentrations across our CBD oils. We also offer multiple concentrations, giving customers options rather than treating CBD dosing as one-size-fits-all.

You can review our latest Certificates of Analysis before choosing a product, and if you have questions about a formula, we always encourage you to reach out to our team. Then, you can bring those specific product details to your healthcare provider and make a decision based on information that actually applies to what you take.

Find your CBD product with Myriam’s Hemp.

Ultimately, CBD and antidepressants can interact, but that doesn’t mean every antidepressant interacts with CBD in the same way… or that everyone taking an antidepressant needs to avoid CBD. Much of the conversation comes down to metabolism, and the best place to start isn’t with a blanket yes or no. Start with your specific medication, talk with your doctor about the antidepressant you take, and discuss the CBD product you’re considering so they can help you understand how the two may fit together. 

From there, choosing a clearly labeled, third-party-tested CBD product makes it easier to know exactly what you’re adding to your routine. At Myriam’s Hemp, we’re always happy to help you understand our formulas, explore available concentrations, or ask about a custom THC-free option so you can bring the right information to the conversation.