Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Paroxetine (Paxil) and bupropion (Wellbutrin) are both medications used to treat depression, but they belong to different classes and have distinct characteristics. Paroxetine is a selective serotonin reuptake inhibitor (SSRI) that works by increasing serotonin levels in the brain, and it is also used for various anxiety disorders. Bupropion, on the other hand, is an atypical antidepressant that is thought to boost norepinephrine and dopamine levels. Unlike paroxetine, bupropion is also used to treat seasonal affective disorder (SAD) and has fewer sexual side effects. Paroxetine is available in both immediate-release and extended-release forms, while bupropion comes in short-acting, sustained-release, and extended-release versions. Bupropion is less likely to cause weight gain compared to paroxetine, but it is not suitable for people with a history of seizures or eating disorders. Both medications can take several weeks to show their full effects and should not be stopped suddenly without consulting a healthcare provider.
Paroxetine (Paxil)
Bupropion
Paroxetine (Paxil)
Bupropion
Summary of Paxil vs. Wellbutrin XL
Summary for SSRI
Prescription only
Paroxetine (also known by it's brand name Paxil) is a selective serotonin reuptake inhibitor (SSRI), used for different types of anxiety problems and depression. It's available as a brand name and generic version, and it comes as an immediate-release tablet, an oral suspension, and an extended-release tablet. Possible side effects include nausea, sexual side effects, and weight gain. It can also cause withdrawal symptoms (e.g., headache, trouble sleeping, anxiety) if you suddenly stop taking it.
Summary for Atypical antidepressant
Prescription only
Bupropion is taken by mouth to treat depression and seasonal affective disorder (SAD). It's available as short-acting tablets that are taken two or three times a day, as well as long-acting versions that are taken once daily. Bupropion has fewer sexual side effects compared to other antidepressants, but it's not a good choice for people with a history of seizures, eating disorders, or drink alcohol regularly.