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Flutine 20mg Capsule (Fluoxetine)

£54.99

Pack Size: 30-Capsule Pack

Product Category: Product Tags:

Flutine 20mg Capsule (Fluoxetine): Strong Depression & Anxiety Treatment UK Guide

Flutine 20mg Capsules contain 20mg of fluoxetine as the active ingredient. Fluoxetine is a selective serotonin reuptake inhibitor (SSRI) antidepressant used in adults for major depressive episodes, obsessive-compulsive disorder (OCD) and bulimia nervosa. It may also be used in children and adolescents aged 8 years and above for moderate to severe major depressive episodes under specialist supervision.

Fluoxetine 20mg is an established adult treatment strength and is taken regularly according to the prescribing clinician’s instructions. It works by selectively inhibiting serotonin reuptake in the brain, increasing serotonin availability and helping regulate mood and related symptoms. Its long half-life means that fluoxetine and its active metabolite remain in the body for an extended period.

What Is Flutine 20mg Used For?

  • Major Depressive Episodes: Fluoxetine is indicated for the treatment of major depressive episodes in adults.
  • Obsessive-Compulsive Disorder: Fluoxetine is indicated for OCD, helping reduce persistent intrusive thoughts and repetitive or compulsive behaviours.
  • Bulimia Nervosa: Fluoxetine is indicated for bulimia nervosa in adults as part of an appropriate treatment programme.
  • Depressive Episodes in Young People: Fluoxetine may be used for moderate to severe major depressive episodes in children and adolescents aged 8 years and above when psychological therapy has not produced an adequate response, under specialist supervision.
  • Depressive Symptoms: Regular treatment can help reduce symptoms such as persistent low mood, loss of interest and other features of depressive illness.

How Does Flutine 20mg Work?

Fluoxetine is an SSRI that selectively inhibits the reuptake of serotonin by nerve cells in the brain. This increases serotonin availability between nerve cells and alters signalling involved in mood and emotional regulation. Fluoxetine is well absorbed after oral administration, with maximum plasma concentrations generally reached after approximately 6 to 8 hours. Fluoxetine and its active metabolite, norfluoxetine, have long elimination half-lives, so the medication remains active in the body for an extended period. Clinical improvement develops gradually rather than providing immediate relief.

How to Take Flutine 20mg Capsules

  • Follow Your Prescription: Take fluoxetine exactly as prescribed. The appropriate dose depends on the condition being treated, individual response, age and other health factors.
  • Depression: The usual adult dose for major depressive episodes is 20mg once daily. Depending on clinical response, the prescriber may adjust the dose, with a maximum of 60mg daily generally recommended.
  • OCD: The usual starting dose for adults is 20mg daily. The dose may be increased according to clinical response, with doses of 20mg to 60mg daily used when appropriate.
  • Bulimia Nervosa: The recommended adult dose for bulimia nervosa is 60mg daily.
  • Once-Daily Treatment: Fluoxetine is usually taken once daily. It can generally be taken at any time of day, but taking it at the same time each day can help maintain a consistent routine.
  • Administration: Fluoxetine can be taken during or between meals. Capsules should be swallowed with water or another suitable drink.
  • Treatment Response: Improvement can take several weeks. For major depressive episodes, treatment response should be reviewed after an appropriate period, particularly if there is no improvement or symptoms worsen.
  • Dose Adjustment: Dose adjustments should be made by a healthcare professional. Lower or less frequent dosing may be considered in people with liver impairment or other factors affecting fluoxetine clearance.
  • Do Not Change Treatment Independently: Do not increase, reduce or discontinue fluoxetine without medical advice.

Flutine 20mg Side Effects

Fluoxetine can cause side effects, particularly during the early stages of treatment. Many adverse effects are mild and may improve as the body adjusts to treatment.

  • Nausea
  • Headache
  • Diarrhoea
  • Dry mouth
  • Dizziness
  • Reduced appetite
  • Increased sweating
  • Sexual dysfunction
  • Difficulty sleeping
  • Tiredness or fatigue
  • Nervousness or anxiety
  • Sleepiness or drowsiness

Some people may experience an initial increase in anxiety, restlessness or sleep disturbance. Serious reactions are uncommon but can include serotonin syndrome, severe allergic reactions, abnormal bleeding, seizures or significant changes in mood and behaviour.

Important Warnings and Precautions

  • MAOIs: Fluoxetine must not be used with irreversible, non-selective monoamine oxidase inhibitors because serious and potentially life-threatening reactions can occur. Appropriate washout periods are required when switching between fluoxetine and certain MAO inhibitors.
  • Other Medicines: Tell your doctor or pharmacist about all medicines and supplements you take because fluoxetine can interact with a number of medicines, including some antidepressants, antipsychotics, anticoagulants and other treatments.
  • Serotonin Syndrome: Combining fluoxetine with other medicines that increase serotonin can rarely cause serotonin syndrome. Symptoms can include agitation, confusion, sweating, shaking, muscle stiffness and changes in heart rate.
  • Mental Health Symptoms: Depression can be associated with suicidal thoughts or behaviour, particularly during the early stages of treatment or following dose changes. Seek urgent medical advice if significant changes in mood or suicidal thoughts develop.
  • Bleeding Risk: Fluoxetine can increase the risk of bleeding, particularly when taken with anticoagulants, antiplatelet medicines or other medicines that affect blood clotting.
  • Seizures and Other Conditions: Tell your doctor if you have epilepsy, heart problems, liver problems, diabetes or other significant medical conditions. Fluoxetine should be used cautiously where clinically appropriate.
  • Driving and Alertness: Fluoxetine may cause dizziness, fatigue, nervousness or other effects that can affect concentration and reactions. Make sure you know how it affects you before driving or operating machinery.
  • St John’s Wort: St John’s Wort can interact with fluoxetine and increase the risk of adverse effects, including serotonin syndrome. Discuss its use with a doctor or pharmacist before taking it alongside fluoxetine.

Stopping Flutine 20mg Treatment

Fluoxetine has a long elimination half-life, so withdrawal symptoms are generally less common than with some other SSRIs. However, treatment should still not be stopped or changed without medical advice. If discontinuation is appropriate, your prescriber can determine whether the dose should be reduced gradually and monitor for withdrawal or return of depressive symptoms.

Frequently Asked Questions

How long does Flutine 20mg take to work?

Fluoxetine does not usually provide immediate relief. Some improvement may occur during the first few weeks, while the full therapeutic response can take longer. Continue taking it regularly as prescribed and speak to your doctor if symptoms are not improving.

Does Flutine 20mg make you sleepy?

Fluoxetine can cause sleepiness or drowsiness in some people, while others may experience insomnia, nervousness or restlessness. If you feel affected, avoid driving or operating machinery until you know how the medication affects you.

What happens if I miss a dose of Fluoxetine?

If you miss a dose, take it when you remember unless it is nearly time for your next dose. If the next dose is due soon, skip the missed dose and continue with your normal schedule. Do not take two doses together.

How much Flutine 20mg should I take?

The appropriate dose depends on the condition being treated. The usual adult dose for major depressive episodes is 20mg once daily. OCD may be treated with 20mg to 60mg daily, while the recommended adult dose for bulimia nervosa is 60mg daily. Dose changes should only be made by the prescribing clinician.

Can I drink alcohol while taking Fluoxetine?

Alcohol can worsen some effects such as drowsiness, dizziness and impaired concentration. It is best to discuss alcohol consumption with your doctor or pharmacist, particularly when starting treatment or if you experience sedation or other side effects.

Can I stop taking Flutine 20mg suddenly?

You should not change or stop fluoxetine without medical advice. Although its long half-life means withdrawal symptoms may be less frequent than with some other SSRIs, stopping treatment can still cause symptoms or allow the underlying condition to return. Your prescriber can advise on the safest way to discontinue treatment.

Disclaimer:

This content is provided for informational purposes only and does not constitute medical advice. These medications are prescription-only medicines (POM) in the UK and should only be used under the guidance and supervision of a qualified healthcare professional.

Medically Reviewed By

Medically Reviewed By

Speciality: Medical Content Reviewer

Last Reviewed: April, 2026

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