Most Auvelity side effects are mild and tend to ease within the first few weeks of treatment as your body adjusts. The most common ones, dizziness and nausea, affect roughly 12–13% of people but cause fewer than 2% to stop taking the medication altogether. How long they linger depends on whether you’re still taking the drug or have recently stopped it.
The Most Common Side Effects
In clinical trials that followed over 1,100 people, the side effects that showed up most often were dizziness (12.7%), nausea (11.9%), headache (8.8%), dry mouth (7.1%), and decreased appetite (6.1%). These rates held fairly steady whether people were tracked for six weeks or up to 12 months, which tells us two things: the side effects don’t get worse over time, but for some people, they don’t fully disappear either.
That said, the overall tolerability was strong. Only 2.7% of participants quit the six-week trials because of side effects. Even in the 12-month study, just 8.4% dropped out for that reason. The specific side effects that drove people to stop were dizziness (1.5%), nausea (1.1%), headache (1.0%), anxiety (0.8%), and decreased appetite (0.6%). For the vast majority of people, the side effects were manageable enough to continue treatment.
Why Dizziness Happens Early On
Auvelity combines two active ingredients. One of them, dextromethorphan, blocks a specific type of brain receptor involved in mood regulation. On its own, dextromethorphan is broken down quickly by the body, with a half-life of about four hours. But the second ingredient, bupropion, slows that breakdown and extends the half-life to roughly 22 hours. This means the dextromethorphan sticks around much longer than your body might expect at first.
That extended presence in your system is what makes the drug effective for depression, but it’s also why neurological side effects like dizziness and drowsiness tend to be most noticeable in the early days. Your brain needs time to adapt to the sustained activity at those receptors. The standard approach is to start with one tablet per day for the first three days, then move to twice daily. This gradual ramp-up helps reduce the intensity of early side effects.
What to Expect in the First Few Weeks
Most people who experience dizziness or nausea notice these effects within the first week, particularly around the time the dose increases to twice daily. For the majority, these symptoms gradually fade as the body reaches a steady state with the medication. Given the 22-hour half-life, it takes roughly four to five days of consistent dosing for drug levels to stabilize in your system. That stabilization period is often when side effects begin to settle down.
Dry mouth and decreased appetite may follow a different pattern. These are related to the bupropion component and can persist for as long as you’re taking the medication, though they often become less bothersome over time. In the long-term trial, decreased appetite actually showed up slightly more often (6.1%) than in the short-term studies (3.8%), suggesting it can emerge or become more noticeable with continued use.
Side Effects After Stopping Auvelity
If you stop taking Auvelity, side effects from the drug itself will clear as it leaves your system. With a 22-hour half-life for the dextromethorphan-bupropion combination, most of the drug is gone within four to five days after your last dose. Any side effects directly caused by the medication, like dry mouth or dizziness, should resolve on a similar timeline.
Discontinuation syndrome is a separate concern. This is a well-documented phenomenon with antidepressants where the body reacts to the sudden absence of a drug it has adapted to. Symptoms typically appear two to four days after stopping and can include flu-like feelings (fatigue, achiness, sweating), trouble sleeping with vivid dreams, nausea, dizziness, unusual sensory feelings like tingling or “electric” sensations, and heightened anxiety or irritability.
These discontinuation symptoms usually last one to two weeks, though in uncommon cases they can linger longer. They’re not dangerous and they are reversible. Tapering off gradually rather than stopping abruptly significantly reduces the chance of experiencing them. If discontinuation symptoms do appear and the same medication (or a similar one) is restarted, they typically resolve within one to three days.
When Side Effects Warrant Attention
A recently updated FDA label for Auvelity added a warning about aseptic meningitis, a rare inflammatory reaction involving the membranes around the brain and spinal cord. This is linked to the bupropion component and is uncommon, but symptoms like severe headache with fever, stiff neck, and sensitivity to light are worth taking seriously and reporting promptly.
For the more routine side effects, the key question is whether they’re tolerable and improving. Dizziness that’s mild and fading over two to three weeks is a normal adjustment pattern. Dizziness that’s severe, worsening, or interfering with daily functioning after several weeks is a signal that the medication may need to be reassessed. The clinical data suggests that most people who are going to tolerate Auvelity well will know within the first month.