Wellbutrin Side Effects: What You Need to Know Before Taking It

When you start taking Wellbutrin, a brand name for the antidepressant bupropion, used to treat depression and help people quit smoking. Also known as bupropion, it works differently than most antidepressants because it targets dopamine and norepinephrine, not serotonin. That’s why some people choose it—less sexual side effects, less weight gain, and sometimes better energy. But that doesn’t mean it’s side effect free.

People on Wellbutrin report headaches, dry mouth, trouble sleeping, and nausea, especially in the first few weeks. For some, it causes jitteriness or anxiety at first—ironic, since it’s often prescribed for depression with low energy. A small number of users experience more serious issues like seizures, especially if they have a history of seizures, eating disorders, or are taking high doses. The risk goes up if you drink alcohol while on it. Unlike SSRIs, Wellbutrin doesn’t usually cause weight gain. In fact, many people lose a few pounds, which is why it’s sometimes used off-label for weight loss. But don’t take it just for that—using it without a diagnosis can be dangerous.

It’s also worth noting that bupropion, the generic form of Wellbutrin, is available in multiple formulations—immediate-release, sustained-release, and extended-release. Each one affects how side effects show up. The extended-release version (Wellbutrin XL) tends to cause fewer side effects because the drug enters your system more slowly. If you’re switching from one form to another, your body might react differently. And if you’ve tried other antidepressants, like SSRIs such as Prozac or Zoloft, and didn’t tolerate them well, Wellbutrin might be a good alternative—but only if your doctor says so.

Some people stop taking Wellbutrin because they feel worse before they feel better. That’s normal with most antidepressants, but with Wellbutrin, the initial anxiety or insomnia can be strong enough to make people quit. Don’t stop cold turkey—talk to your doctor first. Withdrawal can cause mood swings, headaches, and even flu-like symptoms. And if you’re on it for smoking cessation, the side effects can be confusing. Is that irritability from quitting cigarettes or from the drug? It’s often both.

What you’ll find in the articles below are real, practical breakdowns of how Wellbutrin compares to other meds, what the most common side effects really look like in daily life, and how to tell if what you’re feeling is normal or something you need to act on. You’ll also see how it stacks up against other treatments for depression and smoking cessation, and why some people swear by it while others can’t tolerate a single pill. This isn’t theory—it’s what people actually experience, and what doctors recommend when things don’t go as planned.