Fluoxetine, also known as Prozac, is a selective serotonin reuptake inhibitor that works by raising levels of serotonin in the brain. Serotonin is a mood regulator so Prozac is commonly prescribed to treat depressive disorders. Fluoxetine is also sometimes prescribed for people diagnosed with obsessive-compulsive disorder, panic attacks and premenstrual dysphoric disorder. According to The National Library of Medicine, fluoxetine may take up to 5 weeks for full effect. Patients taking monoamine oxidase inhibitors, also used in the treatment of depression, should consult with their physician before taking fluoxetine.
Common Side Effects of Fluoxetine
According to the National Alliance on Mental Illness, symptoms gradually decrease after fluoxetine treatment begins. Often sleep patterns and energy level will improve first and indicate that fluoxetine is working. Common side effects are similar to those experienced in patients taking other selective serotonin reuptake inhibitors. These include sexual side effects. The National Alliance on Mental Illness warns that changes in sex drive and ability may not improve. Other common side effects include nausea, loss of appetite and decreased weight. The Mayo Clinic also notes that patients may experience side effects of restlessness and nervousness.
Serious Side Effects of Fluoxetine
Some side effects of fluoxetine can be serious and warrant medical attention. Patients with an allergy to fluoxetine may experience a rash, hives and swelling of the throat. Additional allergy symptoms may include difficulty breathing or swallowing. Swelling of the face, hands, feet, ankles and lower legs may occur. The National Alliance on Mental Illness warns that children and young adults up to the age of twenty-four may be at risk of suicidal thoughts after taking fluoxetine. Additional neurological side effects from fluoxetine use include confusion, hallucinations and seizures. Patients experiencing any of these side effects should consult with their physician.
Overdose Side Effects of Fluoxetine
Patients that miss a dose of fluoxetine should not take another if the time for the next dose is near. An overdose of fluoxetine can cause life-threatening side effects. The National Library of Medicine notes that initial signs of overdose include confusion, nervousness and unsteadiness or dizziness. The patient may experience nausea, vomiting and abdominal pain. In addition, shaking and seizures may occur. The patient's heart rate may become irregular. The National Alliance on Mental Illness warns that if medical attention is not received, the patient may become drowsy, faint and slip into a coma.
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