Wellbutrin (bupropion) should be discontinued gradually, not stopped all at once. The standard approach is to reduce your dose over several weeks, with the specific schedule depending on your current dose and which formulation you take. For someone on 300 mg of Wellbutrin XL, the manufacturer recommends stepping down to 150 mg once daily before stopping completely, and the full taper typically spans 6 to 8 weeks.
Why Tapering Matters
Bupropion works by increasing the activity of two brain chemicals: dopamine and norepinephrine. Over time, your brain adjusts to the drug’s presence and comes to rely on it for maintaining those chemical levels. When you stop abruptly, your brain hasn’t had time to recalibrate, which can trigger uncomfortable withdrawal symptoms. A gradual taper gives your nervous system time to adapt to each reduction before you step down again.
What a Typical Taper Looks Like
There is no single tapering protocol that fits everyone. Your prescriber will tailor the plan based on your daily dose, how long you’ve been taking the medication, and whether you have conditions like anxiety or epilepsy that could complicate the process. That said, the general framework is straightforward.
If you’re currently on 300 mg or more of Wellbutrin XL, the first step is usually dropping to 150 mg once daily for one to two weeks before discontinuing entirely. If you’re already at 150 mg or less, you may not need a formal taper at all. For the SR (sustained-release) formulation, the taper follows a similar logic but may be adjusted because the dosing schedule is different (SR is usually taken twice daily rather than once).
The total process generally takes 6 to 8 weeks, though some people move through it faster and others need a slower approach. Your prescriber may extend the timeline if withdrawal symptoms appear at any step, holding at that dose until things settle before making the next reduction.
Do Not Cut or Crush XL or SR Tablets
One important limitation: Wellbutrin XL tablets cannot be cut, crushed, or chewed. The FDA labeling is explicit about this. These tablets use a special coating to release the medication slowly over the day. Breaking that coating dumps the full dose into your system at once, which raises the risk of side effects, including seizures. The same principle applies to the SR formulation. If your taper requires a dose that isn’t available as a whole tablet, your prescriber will need to switch you to a different strength or formulation rather than having you split pills.
Withdrawal Symptoms to Expect
Bupropion withdrawal is generally considered milder than withdrawal from SSRIs or SNRIs, but it can still produce noticeable symptoms. The most commonly reported ones include:
- Physical: body aches, muscle pain, headaches, dizziness, drowsiness, and fatigue
- Psychological: anxiety, agitation, irritability, and sleep disturbances
These symptoms typically begin within a few days of a dose reduction. In case reports, patients have developed symptoms as early as two days after stopping the medication. For most people, symptoms peak within the first couple of weeks and resolve within two to four weeks. If they become difficult to manage, your prescriber can slow the taper or temporarily hold your current dose.
Withdrawal vs. Returning Depression
One of the trickier parts of discontinuing any antidepressant is figuring out whether what you’re feeling is temporary withdrawal or your original depression coming back. The two can look similar on the surface, since both can involve low mood, irritability, and sleep problems. But there are reliable ways to tell them apart.
Withdrawal symptoms follow a characteristic wave pattern. They show up within days of a dose change, intensify over the next week or two, and then gradually fade over the following two to four weeks. Returning depression doesn’t follow this neat timeline. It tends to build more slowly and steadily, without the physical symptoms (like dizziness, body aches, and headaches) that typically accompany withdrawal.
Another useful signal: if your symptoms appeared right after a dose reduction and they include a mix of physical and emotional complaints, that points toward withdrawal. If you reinstate the medication and symptoms improve quickly, that also strongly suggests withdrawal rather than relapse. Returning depression, by contrast, doesn’t resolve within days of restarting the drug.
Keeping a simple log of your symptoms, noting when they started and how they change day to day, can help both you and your prescriber make this distinction accurately. If your depressive symptoms persist or worsen beyond the expected withdrawal window, that’s worth a conversation about whether you still need treatment.