How quickly does bupropion act?

Bupropion may start to have some effects within the first few days of treatment, but it typically takes several weeks to reach its full therapeutic effect. The exact timeline for when bupropion starts to work can vary depending on the individual and their specific condition.

For example, some people may start to feel improvements in mood, energy, and motivation within the first week or two of taking bupropion, while others may not notice significant changes until several weeks into treatment. It is important to continue taking the medication as prescribed and to be patient as it can take time for the medication to reach its full effect.

If you are not experiencing any improvements in your symptoms after several weeks of taking bupropion, it is important to discuss this with your healthcare provider. They can help determine if any changes to the medication regimen are needed to address these issues.

It is important to only take bupropion as prescribed by a healthcare provider and to follow their instructions carefully. If you have any questions or concerns about your medication regimen, it is important to discuss these with your healthcare provider.


There are various forms of drugs available, such as tablets or liquids, and each may have a separate patient information leaflet (PIL) for different doses. It is important to refer to the PIL for the specific form and dose of the drug that you have been prescribed.

You can search for further information and PILs on websites such as: