Wellbutrin (bupropion) is one of the few antidepressants that doesn’t touch serotonin. It works entirely through dopamine and norepinephrine, which makes it effective for depression, focus, and energy but leaves a gap when it comes to anxiety. For many people, that gap shows up as jitteriness, racing thoughts, or a general wired feeling. The most common pairings to address this fall into a few categories: serotonin-based medications, non-sedating anti-anxiety drugs, beta-blockers for physical symptoms, and therapy approaches that target anxiety directly.
Why Wellbutrin Can Make Anxiety Worse
Bupropion increases the levels of two activating brain chemicals: dopamine and norepinephrine. It has no meaningful effect on serotonin, which is the neurotransmitter most closely linked to calming anxiety. This is the opposite profile of an SSRI like sertraline or escitalopram, which flood the brain with serotonin but can cause fatigue, weight gain, and sexual side effects. The tradeoff with Wellbutrin is that those activating chemicals can produce something that feels a lot like too much caffeine, especially in the first few weeks.
This stimulating profile is exactly why Wellbutrin hasn’t been well studied or recommended as a treatment for anxiety disorders on its own. Clinical guidelines from CANMAT (2023) list bupropion as a first-line antidepressant for depression, but when anxiety is a prominent feature, pairing it with something that covers the serotonin side of things is the standard approach.
SSRIs and SNRIs: The Most Common Pairing
The most widely prescribed combination is Wellbutrin plus an SSRI (like sertraline, escitalopram, or fluoxetine) or an SNRI (like venlafaxine or duloxetine). These medications directly increase serotonin activity, which addresses anxiety at the neurochemical level that bupropion misses entirely. This combination is so common that bupropion is described in the clinical literature as being “frequently used to augment the efficacy and mitigate side effects of serotonergic antidepressants,” meaning the pairing goes both ways: the SSRI handles anxiety, and the Wellbutrin compensates for the sluggishness or emotional blunting the SSRI can cause.
One of the biggest practical benefits of this combination is sexual function. SSRIs are notorious for reducing libido and making orgasm difficult or impossible. In a study of 47 patients experiencing these side effects from their SSRI, adding bupropion reversed the sexual dysfunction in 66% of cases. That’s a meaningful number and one of the main reasons prescribers reach for this specific pairing rather than simply switching to a higher SSRI dose.
The downside is that combining two antidepressants can, in rare cases, increase seizure risk. Bupropion already lowers the seizure threshold slightly. The estimated seizure risk is about 0.1% at doses under 300 mg per day and rises to 0.4% at 450 mg per day. Adding another antidepressant can amplify that risk, which is why dose management matters. People with a history of seizures, eating disorders, or heavy alcohol use need to be especially cautious with any bupropion combination.
Buspirone: A Non-Sedating Option
Buspirone is an anti-anxiety medication that works differently from both SSRIs and benzodiazepines. It partially activates one type of serotonin receptor without the sedation, dependence risk, or sexual side effects that come with other options. This makes it an appealing add-on for people who want anxiety relief without feeling foggy or developing a tolerance.
A 2024 multicenter study followed 180 patients with depression and significant anxiety who were given buspirone alongside their existing antidepressant. Over 12 weeks, anxiety scores dropped substantially, from an average of 25.2 to 15.4 on a standardized scale. The anxiety response rate at 12 weeks was 39.1%, and adverse reactions were reported in only 3.7% of participants. The average dose was about 18 mg per day. These numbers reflect a real but moderate effect. Buspirone won’t eliminate severe anxiety, but it can take the edge off without adding sedation or new side effects to the mix.
One important thing to know: buspirone takes time. Unlike a benzodiazepine, which works within an hour, buspirone needs two to four weeks of consistent use before you’ll notice a difference. If you’re expecting immediate relief, this isn’t the right tool.
Beta-Blockers for Physical Symptoms
Some people on Wellbutrin don’t experience anxious thoughts so much as anxious bodies: a rapid heartbeat, trembling hands, tight chest, or that buzzy adrenaline feeling. For these physical symptoms, beta-blockers like propranolol can be remarkably effective. They work by blocking the body’s response to adrenaline, slowing the heart rate and reducing the physical sensations of fight-or-flight.
Propranolol doesn’t do anything for the psychological component of anxiety. It won’t quiet racing thoughts or reduce worry. But if your main complaint is that Wellbutrin makes your heart pound or your hands shake, a low dose of propranolol can resolve that specific problem without affecting your mood, energy, or cognition. It’s also sometimes used on an as-needed basis for situational anxiety, like before a presentation or a stressful meeting, rather than taken daily.
Therapy That Targets Anxiety Directly
Medication isn’t the only option, and for many people, the most durable solution involves cognitive behavioral therapy (CBT). The 2023 CANMAT guidelines specifically note that CBT has continued evidence supporting its use for depression with concurrent anxiety. For people dealing with both conditions, more complex versions of CBT that include behavioral activation and cognitive restructuring tend to work better than simpler approaches.
There’s also a newer approach called transdiagnostic or “unified” treatment for emotional disorders, which treats anxiety and depression as overlapping problems rather than separate diagnoses. A meta-analysis supports this as a second-line option, and it may be particularly useful if your anxiety doesn’t fit neatly into one category. This type of therapy teaches you to manage the emotional reactions that drive both depression and anxiety, which can reduce your reliance on additional medications over time.
What About Benzodiazepines?
Medications like alprazolam (Xanax), clonazepam (Klonopin), and lorazepam (Ativan) work fast and effectively for anxiety. They’re sometimes prescribed short-term alongside Wellbutrin, particularly in the early weeks when bupropion’s stimulating effects are strongest. However, they carry meaningful risks: physical dependence can develop within weeks, withdrawal is difficult, and they can impair memory and coordination. Abrupt withdrawal from benzodiazepines also lowers the seizure threshold, which compounds the seizure risk already present with bupropion. Most prescribers treat benzodiazepines as a bridge, not a long-term pairing.
Choosing the Right Combination
The best pairing depends on what kind of anxiety you’re dealing with. If your anxiety is generalized, with persistent worry, tension, and difficulty relaxing, an SSRI or buspirone added daily makes the most sense. If your anxiety is mainly physical, with a racing heart and jitteriness, a beta-blocker may solve the problem without adding another psychiatric medication. If your anxiety is situational or mild, therapy alone might be enough to close the gap.
It’s also worth considering whether your anxiety is a side effect of Wellbutrin that will settle down or a separate condition that needs its own treatment. Bupropion’s stimulating effects are often strongest in the first few weeks and can mellow over time. Most clinical studies evaluating bupropion’s effects on anxiety run for at least 8 to 12 weeks before drawing conclusions. If you’re in the first month and feeling wired, giving it more time before adding another medication is a reasonable approach, as long as the anxiety is manageable.
For people who need Wellbutrin for its antidepressant benefits, energy boost, or protection against sexual side effects but find the anxiety piece unacceptable, the SSRI-plus-bupropion combination remains the most studied and widely used strategy. It addresses the broadest range of anxiety symptoms while letting each medication offset the other’s drawbacks.