Prozac (fluoxetine) is commonly prescribed for patients that have depression, some eating disorders, premenstrual dysphoric disorder symptoms, panic attacks, obsessive-compulsive disorder, and some other conditions. This drug works by increasing the amount of serotonin in the brain. You may be at first started on a lower dose of this medicine for your doctor to see how you respond to it. Your dose may later be adjusted. Make sure you never adjust your dose yourself, as there is a risk you may end up taking too much of this medicine. The following symptoms are possible if you have taken too much of Prozac: dizziness, unsteadiness, confusion, nervousness, pounding heartbeat, fever, fainting, and unresponsiveness. You will need to seek emergency medical help if you have taken too much and experience any of the symptoms mentioned. Make sure you tell your doctor about any medical conditions you have that can affect the dose you are prescribed, such as liver disease, heart disease, a recent history of heart attack, seizures, or diabetes. Side effects of Prozac are possible and can include dry mouth, weight loss, loss of appetite, sore throat, nervousness, drowsiness, nausea, changes in sex drive, or weakness.