Executive the essentials at a glance and quick facts

  • Generic name: fluoxetine. In pharmacology, it is a selective serotonin reuptake inhibitor.
  • Common formulations in the United States: oral tablets or capsules (10 mg, 20 mg) and a 90 mg delayed-release capsule for once-weekly use.
  • Available by prescription only; fluoxetine is not scheduled under the federal Controlled Substances Act.

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What is the drug fluoxetine? and when it is used

Fluoxetine is an antidepressant from the SSRI family frequently prescribed to treat major depressive episodes and a variety of anxiety-related disorders. It is widely available as a generic in the United States; the original brand was Prozac.

Clinicians also use fluoxetine for disorders where modulation of serotonin can help, such as obsessive-compulsive disorder, panic disorder, bulimia nervosa, and premenstrual dysphoric disorder. For specific approved diagnoses, see the section on approved uses below or jump directly to approved uses.

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FDA approved uses

The U.S. Food and Drug Administration has approved fluoxetine for several psychiatric conditions. These include:

  • The condition referred to as major depressive disorder
  • A disorder characterized by obsessions and compulsions (OCD)
  • Panic disorder
  • Bulimia nervosa, a serious eating disorder
  • The disorder Premenstrual dysphoric disorder also known as PMDD

For PMDD, short-term treatment targeted to the luteal phase or continuous dosing can reduce both mood and somatic symptoms.

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How fluoxetine modulates serotonin uptake and pharmacokinetics

Fluoxetine reduces the reuptake of serotonin at presynaptic terminals, increasing serotonin availability in the synaptic cleft. Changes in serotonergic signaling are believed to underlie improvements in mood, anxiety, and compulsive symptoms.

This medicine has a long elimination profile. Fluoxetine's half-life is roughly 2 to 4 days, while its active metabolite norfluoxetine can persist for one to two weeks or more. The long half-life can lessen abrupt discontinuation symptoms but also prolong negative health impacts after stopping therapy.

See dose administration for practical information on switching to weekly dosing and tapering.

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Dose delivery and administration

  • Do what your prescriber tells you. Do not alter dose or stop medication without medical advice.
  • Typical adult starting doses are 10 mg or 20 mg once daily, adjusted depending on diagnosis and tolerability.
  • For patients stable on daily dosing, a 90 mg once-weekly delayed-release capsule may be an option. Do not open or crush delayed-release capsules.
  • Although fluoxetine has a long half-life, planned discontinuation should usually be gradual to reduce the chance of withdrawal symptoms.

If you have questions about dose adjustments, request a written plan from your prescriber. For important safety controls to consider related to dose changes, refer to safety and mitigating steps.

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Safety, safety advisories and precautionary actions

  • Inform your clinician about liver disease, epilepsy, diabetes, narrow angle glaucoma, urinary retention, enlarged prostate, bipolar disorder, or substance misuse history.
  • Discuss pregnancy plans and breastfeeding. Late pregnancy exposure has been linked to neonatal adaptation symptoms; infants exposed via breast milk should be monitored.
  • Antidepressants may increase suicidal thoughts or behavior in children, adolescents, and young adults. Watch for any new or worsening mood changes, especially in the initial weeks or after dose adjustments.
  • Avoid or limit alcohol, since it can worsen sedation and impair judgment when combined with fluoxetine.
  • If you develop new eye pain or sudden visual changes and have a history of angle-closure glaucoma, seek urgent care.

Report abrupt increases in agitation, panic, hostility, severe insomnia, or thoughts of self-harm to your prescriber immediately.

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Absolute medical situations contraindicating this option and major cautions

  • Known allergy or hypersensitivity to fluoxetine or any inactive ingredient in the product.
  • Do not use concurrently with pimozide or thioridazine.
  • Do not start fluoxetine within 14 days of stopping an MAOI. After stopping fluoxetine, wait at least 5 weeks before starting an MAOI or thioridazine.
  • Use caution with linezolid or intravenous methylene blue because of serotonin syndrome risk; consult your prescriber before these therapies.

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Hidden effects and signs that require urgent care

Ask for counsel a physician immediately for concerning signs. possible severe allergic reactions, such as hives, facial or throat swelling, breathing difficulty, or a widespread blistering rash.

Contact your healthcare provider promptly for symptoms that may signal serious complications, including:

  • Signs of serotonin syndrome: high fever, severe agitation, hallucinations, heavy sweating, tremor, muscle stiffness, lack of coordination, severe nausea, vomiting, or diarrhea.
  • Marked neurologic change: rigid muscles with high fever, sudden confusion, fainting, or irregular heartbeat.
  • Acute eye pain or sudden vision loss.
  • Significant weakness, confusion, or seizures that could indicate low sodium (hyponatremia).
  • Severe cardiac symptoms such as strong palpitations or lightheadedness.

Commonly reported post use effects that are typically mild. that often improve with time include sleep changes (insomnia or vivid dreams), fatigue, head pains, tremor, gastrointestinal upset, dry mouth, appetite or weight changes, nasal congestion, and sexual dysfunction such as reduced libido or delayed orgasm.

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Drug-supplement the process of people engagings are not just about words, but meaning.

  • Combining fluoxetine with other serotonergic agents increases the risk of serotonin syndrome. Examples include other antidepressants, tramadol, some opioids, triptans, Herbal remedy St Johns wort, and tryptophan supplements.
  • Concurrent use of NSAIDs or anticoagulants can raise bleeding risk. This includes aspirin, ibuprofen, naproxen, celecoxib, and warfarin; metric monitoring may be required.
  • Central nervous system depressants (benzodiazepines, opioid analgesics, some sleep medicines) can add to sedation and impair coordination.
  • Fluoxetine inhibits CYP2D6 and can increase concentrations of drugs metabolized by that enzyme, such as some tricyclic antidepressants, select antipsychotics, and certain beta blockers. It can also reduce activation of tamoxifen.
  • Use caution with medications that prolong the QT interval because of potential additive cardiac risk.

Provide your prescriber and pharmacist with a full list of prescription drugs, over-the-counter products, vitamins, and herbal supplements before starting fluoxetine.

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What to do after missing your dose

  • If you miss a daily dose, take it as soon as you remember, unless the next scheduled dose is near. Do not double your dose to catch up on your schedule.
  • If you miss a weekly 90 mg dose, take it as soon as possible if it is within a few days of your usual dosing day. If several days have passed, skip the i skipped the dose and return to your normal schedule. Contact your prescriber if you are uncertain.

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The response after an non-fatal overdose and emergency actions

If you suspect an consuming an overdose, seek emergency medical assistance immediately. In the United States dial 911 or call the Poison Help line at 1-800-222-1222 for immediate instructions. Symptoms of consuming an overdose may include extreme drowsiness, fainting, severe agitation, tremors, seizures, persistent vomiting, abnormal heart rhythms, or unconsciousness.

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External digital storage enables saving files on disks, drives, or in the cloud. and disposal management compliance guidance

  • Store fluoxetine at room temperature, generally between 20 and 25 C (68 and 77 F), away from direct heat and moisture.
  • Lock up all medicines to keep them out of reach of children and pets. and retain the original child-resistant packaging when provided.
  • Dispose of expired or unwanted medication following local regulations. Many pharmacies and community programs offer medicine take-back or mail-back disposal options for safe disposal.

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Cost analysis and option comparison (USD)

Depending on diagnosis, prior response, side effect profile, and drug and doable drug social interactions create opportunities for collaboration., prescribers may consider agents as backup options. Ordinary substitutes include:

  • Additional options among SSRIs are Sertraline medication class, Escitalopram medication, Citalopram is prescribed for mood disorders, Paroxetine, and Fluvoxamine..
  • The SNRI lineup features venlafaxine, desvenlafaxine, and duloxetine..
  • Non-SSRI options: bupropion, mirtazapine, vortioxetine, vilazodone.

Estimated retail out-of-pocket prices for a 30 day supply of commonly used generics in the United States (prices vary by retailer, region, coupons, and insurance):

  • Fluoxetine 20 mg daily: about 4 to 15 USD
  • Fluoxetine 90 mg weekly: about 10 to 40 USD per month
  • Sertraline patient information 50 mg daily: about 5 to 20 USD
  • Escitalopram therapy 10 mg daily: about 7 to 25 USD
  • Duloxetine 30 mg daily: about 10 to 40 USD
  • Bupropion SR 150 mg twice daily: about 8 to 30 USD

Brand-name versions typically cost more than generics. Insurance coverage, manufacturer assistance programs, pharmacy discount cards, and mail-order options can substantially change out-of-pocket expense.

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Additional aspects about Fluoxetine