Treating depression or obsessive-compulsive disorder (OCD) in adults and children. It is used to treat bulimia nervosa and panic disorder in adults. It may also be used for other conditions as determined by your doctor.

Prozac is a selective serotonin reuptake inhibitor (SSRI). It works by restoring the balance of serotonin, a natural substance in the brain, which helps to improve certain mood problems.

Do NOT use Prozac if:

• you are allergic to any ingredient in Prozac
• you are taking or have taken a monoamine oxidase inhibitor (MAOI) (eg, phenelzine), selegiline, or St. John's wort within the last 14 days
• you are taking a fenfluramine derivative (eg, dexfenfluramine), an H₁ antagonist (eg, astemizole, terfenadine), nefazodone, pimozide, a serotonin norepinephrine reuptake inhibitor (SNRI) (eg, venlafaxine), sibutramine, thioridazine, or tryptophan

Contact your doctor or health care provider right away if any of these apply to you.

Before using Prozac :

Some medical conditions may interact with Prozac . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

• if you are pregnant, planning to become pregnant, or are breast-feeding
• if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
• if you have allergies to medicines, foods, or other substances
• if you or a family member has a history of bipolar disorder (prozac without prescription), other mental or mood problems, suicidal thoughts or attempts, or alcohol or substance abuse
• if you have a history of seizures, heart problems, liver problems, severe kidney problems, stomach or bowel bleeding, zoloft, or metabolism problems
• if you are dehydrated, have low blood sodium levels, or drink alcohol
• if you will be having electroconvulsive therapy (ECT)

Some MEDICINES MAY INTERACT with Prozac . Tell your health care provider if you are taking any other medicines, especially any of the following:

• Anorexiants (eg, phentermine), fenfluramine derivatives (eg, dexfenfluramine), linezolid, MAOIs (eg, phenelzine), metoclopramide, nefazodone, selegiline, serotonin 5-HT₁ receptor agonists (eg, sumatriptan), sibutramine, SNRIs (eg, venlafaxine, St. John's wort, trazodone, or tryptophan because severe side effects, such as a reaction that may include fever, rigid muscles, blood pressure changes, mental changes, confusion, irritability, agitation, delirium, and coma, may occur
• Anticoagulants (eg, warfarin), aspirin, or nonsteroidal anti-inflammatory drugs (NSAIDs) (eg, ibuprofen) because the risk of bleeding, including stomach bleeding, may be increased
• Diuretics (eg, furosemide, hydrochlorothiazide) because the risk of low blood sodium levels may be increased
• Tramadol because the risk of seizures may be increased
• Cyclobenzaprine or H₁ antagonists (eg, astemizole, terfenadine) because severe heart problems, including irregular heartbeat, may occur
• HIV protease inhibitors (eg, ritonavir) because they may increase the risk of Prozac 's side effects
• Cyproheptadine because it may decrease Prozac 's effectiveness
• Aripiprazole, benzodiazepines (eg, alprazolam), beta-blockers (eg, propranolol), carbamazepine, clozapine, dextromethorphan, digoxin, flecainide, haloperidol, hydantoins (eg, phenytoin), lithium, norepinephrine reuptake inhibitors (eg, atomoxetine), phenothiazines (eg, chlorpromazine, thioridazine), pimozide, propafenone, risperidone, tricyclic antidepressants (eg, amitriptyline), or vinblastine because the risk of their lexapro without prescription side effects may be increased by Prozac

This may not be a complete list of all interactions that may occur. Ask your health care provider if Prozac may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.