Fluoxetine 40 mg (often known by the brand Prozac) is a medicine mainly used to treat mental health conditions. The 40 mg dose is a common therapeutic dose prescribed by doctors.
Main uses
- Depression – helps improve mood, energy, and interest in daily life
- Anxiety disorders – reduces excessive worry and tension
- Obsessive-compulsive disorder – helps control unwanted thoughts and repetitive behaviors
- Panic disorder – reduces panic attacks
- Bulimia nervosa – helps reduce binge-eating and purging behaviors
How it works
Fluoxetine belongs to a group called SSRIs (Selective Serotonin Reuptake Inhibitors). It increases serotonin levels in the brain, which helps regulate mood and emotions.
Important notes
- It may take 2–4 weeks (sometimes longer) to feel full benefits
- Take it exactly as prescribed (40 mg is not for everyone)
- Possible side effects: nausea, sleep problems, headache, reduced appetite
- Do not stop suddenly without medical advice