Does Wellbutrin Cause Weight Gain? What You Should Know

Medical Providers:
Dr. Michael Vines, MD
Ray Hamilton, DNP, PMHNP-BC, FNP-C
Last Updated: August 10, 2025

Does Wellbutrin Cause Weight Gain?

Wellbutrin (bupropion) is an antidepressant often prescribed to treat depression, seasonal affective disorder (SAD), and to help people quit smoking. Many who are prescribed Wellbutrin worry about possible side effects, especially when it comes to changes in weight.

The short answer? Wellbutrin is less likely to cause weight gain compared to many other antidepressants. In fact, some people may experience modest weight loss while taking it. But, like any medication, responses can vary.

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Why Weight Changes Can Happen with Wellbutrin?

While Wellbutrin generally has a lower risk of weight gain, certain factors can still influence your body weight during treatment:

  • Changes in appetite – Some people notice an increase or decrease in hunger.
  • Metabolism shifts – Your body’s natural metabolic rate may be affected by depression recovery or medication adjustment.
  • Lifestyle changes – Feeling better mentally may change your activity levels and eating habits.
  • Other medications – If you’re taking multiple prescriptions, the combination may affect your weight.

How Wellbutrin Compares to Other Antidepressants?

Compared to SSRIs (like Zoloft or Prozac) and SNRIs (like Effexor), Wellbutrin is less associated with weight gain. In fact, clinical studies have shown it may cause mild weight loss in some patients, particularly in the first several months.

For a closer look at medications that can affect weight, it’s best to review each drug’s profile with your healthcare provider.

Feeling better is a decision away. Ask your doctor about Wellbutrin today.

What to Do If You Notice Weight Changes?

If you experience noticeable weight gain or loss while on Wellbutrin:

  • Track your diet and activity – This helps you identify whether lifestyle habits are the cause.
  • Speak to your doctor – Never stop medication without medical guidance.
  • Check for other factors – Hormones, stress, and sleep can all affect weight.
  • Consider nutrition and exercise adjustments – Small changes can help you maintain a healthy balance.

If you’re thinking about stopping or switching antidepressants, you may also want to learn about the Wellbutrin withdrawal process and how to do it safely.

Additional Side Effects to Keep in Mind

While weight change is a common concern, Wellbutrin can also cause other side effects such as dry mouth, insomnia, headaches, or increased heart rate. In rare cases, it may lead to more serious effects like high blood pressure or seizures, especially at higher doses. Understanding the full side effect profile can help you and your healthcare provider weigh the benefits and risks before starting treatment. For more details, you can review the FDA’s official medication guide.

Ready to feel like yourself again? Consider Wellbutrin for your treatment plan.

Healthy Habits That Can Help Manage Weight on Wellbutrin

If you want to reduce the risk of unwanted weight gain while taking Wellbutrin, consider adopting these lifestyle tips:

  • Eat balanced meals rich in lean proteins, whole grains, and vegetables.
  • Stay physically active with regular workouts, even short walks.
  • Get quality sleep to regulate hunger hormones and boost metabolism.
  • Stay hydrated to support digestion and control appetite.

Making gradual, sustainable changes is often more effective than extreme dieting, especially when you’re adjusting to a new medication.

Ready to Take Control of Your Health?

If you’re concerned about Wellbutrin side effects or need support managing medication changes, we’re here to help. Our medical team at Scottsdale Detox offers compassionate, judgment-free care to guide you through safe medication detox and recovery planning.

Call us today to speak with a specialist who understands your needs and can help you feel your best — both mentally and physically.

A great team can make all the difference. Listen and tune in today!