Fluoxetine can interact with various medications and substances, potentially altering their effects or Fluoxetine’s own efficacy. Always inform your doctor about all medications, supplements, and herbal remedies you are taking, including over-the-counter drugs. This includes prescription medications, such as MAO inhibitors (like phenelzine or tranylcypromine). Combining Fluoxetine with MAO inhibitors can lead to a dangerous condition called serotonin syndrome. A period of at least two weeks should separate discontinuation of MAO inhibitors and the start of Fluoxetine treatment.
Specific Interactions to Note
Certain medications can increase Fluoxetine’s blood levels, potentially increasing side effects. These include some antibiotics (like erythromycin), antifungal medications (like ketoconazole), and certain HIV medications. Conversely, some drugs can reduce Fluoxetine’s effectiveness. Consult your doctor about potential interactions with anticoagulants (like warfarin), non-steroidal anti-inflammatory drugs (NSAIDs), and lithium. Alcohol consumption alongside Fluoxetine may exacerbate side effects, such as drowsiness and dizziness. While St. John’s Wort is often used for depression, combining it with Fluoxetine can cause serotonin syndrome.
This information is not exhaustive, and individual reactions may vary. Regularly consult your physician for ongoing medication management and to address any concerns regarding potential drug interactions.


