Plaquenil

Basic Plaquenil Information

• INN (International Nonproprietary Name): Hydroxychloroquine.
• Brand Names Available In United Kingdom: Plaquenil and generic hydroxychloroquine sulfate are commonly supplied in the UK.
• ATC Code: P01BA02.
• Forms & Dosages: Film-coated tablets 200 mg (common) in blister packs of 30 or 60, or bottles of 60 or 100; 100 mg tablets are rare and not common in UK practice.
• Manufacturers In United Kingdom: not specified.
• Registration Status In United Kingdom: Prescription-only medicine (POM) authorised and regulated by national agencies.
• OTC / Rx Classification: Prescription (Rx) only.

Critical Warnings & Restrictions

High‑Risk Groups

Who is most at risk when prescribed hydroxychloroquine?

People with pre-existing retinal disease must be identified before treatment starts.

Patients with known cardiac conduction disorders or a history of ventricular arrhythmia require extra caution.

Severe liver or kidney impairment increases the need for dose adjustment and monitoring.

Those with G6PD deficiency should be assessed for haemolysis risk before treatment begins.

Pregnant or breastfeeding people should only use hydroxychloroquine if a specialist advises it.

Children under six should avoid full-strength 200 mg tablets due to overdose risk.

Elderly patients need close monitoring for cumulative retinal damage and potential cardiac issues.

Follow MHRA and NHS guidance on baseline checks and monitoring schedules.

Interaction With Activities

Can hydroxychloroquine affect driving or workplace safety?

Hydroxychloroquine may cause dizziness or blurred vision, which can impair driving and use of machinery.

If your role is safety-critical, follow employer policies and inform occupational health if side effects occur.

Avoid tasks that need full alertness until you know how the medicine affects you.

Report new symptoms such as visual disturbance or palpitations promptly to your prescriber or pharmacist.

Q&A — “Can I Drive After Taking It In The UK?”

Short answer: Usually yes, but only if you feel alert and your vision is normal.

If you experience dizziness, blurred vision or drowsiness, do not drive or operate heavy machinery and contact your prescriber or pharmacist.

Follow employer safety policy if your job involves safety‑critical duties.

Safety Checklist For Pre‑Treatment Screening

• Confirm known allergy to hydroxychloroquine or other 4‑aminoquinolines.
• Arrange baseline ophthalmology review before long‑term therapy.
• Perform an ECG if there are cardiac risk factors or the patient uses QT‑prolonging medicines.
• Review liver and renal function and consider dose adjustment if impaired.
• Obtain a full medication list to identify interacting drugs such as azithromycin and certain antipsychotics.

Patient Safety Checklist To Give On Dispensing

Provide a written handout stating the indication, dose and duration of therapy.

Advise on common side effects and the need to report visual changes immediately.

Remind patients not to start or stop other medications without consulting a clinician due to QT risk.

Explain Yellow Card reporting and encourage reporting of suspected adverse reactions.

Usage Basics

INN, Brand Names Available In The UK

The International Nonproprietary Name is hydroxychloroquine.

Plaquenil is the best-known brand and is commonly dispensed in the UK as 200 mg film‑coated tablets.

Generics labelled hydroxychloroquine sulfate appear routinely in UK pharmacies.

Legal Classification

Hydroxychloroquine is a prescription‑only medicine (POM) in the United Kingdom.

It may only be supplied against an authorised prescription from an NHS or private prescriber.

Quick Reference

• Brand Names: Plaquenil; generic hydroxychloroquine sulfate.
• Formulations: 200 mg film‑coated tablets (most common).
• Legal Status: Prescription‑only medicine (POM).

Common Pack Sizes

• Blister packs: 30 tablets.
• Blister packs: 60 tablets.
• Bottles: 60 tablets.
• Bottles: 100 tablets.

Dosing Guide

Standard Regimens (NHS Guidelines)

What dose will my prescriber usually recommend?

For autoimmune conditions such as rheumatoid arthritis and systemic lupus erythematosus the usual adult dose is 200–400 mg once daily, given as a single dose or divided dose according to clinician preference.

Many clinicians aim to keep dosing at or below 5 mg/kg actual body weight to reduce retinal risk.

For malaria prophylaxis the common adult dose is 400 mg once weekly starting 1–2 weeks before travel and continuing for 4 weeks after return.

Malaria treatment regimens use higher initial doses, for example an 800 mg loading dose then 400 mg at specified intervals, with weight adjustments per specialist guidance.

Adjustments For Comorbidities

Reduce dose or increase monitoring in severe liver or kidney impairment.

Elderly patients need closer follow up for retinal and cardiac issues.

Paediatric dosing is weight‑based, typically 3–7 mg/kg/day up to 400 mg daily depending on age and indication.

Consider ECG monitoring if concurrent QT‑prolonging drugs are used or if cardiac disease is present.

What If I Miss A Dose?

Take the missed dose as soon as you remember.

If it is close to the next scheduled dose, skip the missed dose and do not double up.

Contact your GP or pharmacist for regimen‑specific advice if you are uncertain.

Indication/Dose/Duration Summary

Who Needs Eye Or Cardiac Review Before Starting?

• Anyone starting long‑term therapy should have baseline ophthalmology assessment.
• Patients with cardiac disease or on QT‑prolonging drugs need ECG prior to and during treatment.
• Those with liver or renal impairment require baseline blood tests and closer follow up.

Interaction Chart

Food And Drinks

Hydroxychloroquine has few direct food interactions.

Alcohol can worsen gastrointestinal side effects and may increase liver strain with long‑term use.

Avoid grapefruit as a precaution where altered metabolism could affect blood levels.

Taking the tablet with food can reduce stomach upset for sensitive patients.

Common Drug Conflicts

Which medicines cause concern when taken with hydroxychloroquine?

Combine hydroxychloroquine with QT‑prolonging drugs such as azithromycin and certain antipsychotics increases the risk of cardiac arrhythmia.

Concurrent use with other 4‑aminoquinolines like chloroquine is contraindicated.

Caution is advised with drugs that affect hepatic metabolism or lower the seizure threshold.

MHRA Yellow Card reports highlight cardiac and visual adverse events; report new concerns promptly.

Dietary Advice

• Limit alcohol intake to avoid worsening GI symptoms and liver strain.
• Take with food if nausea occurs.
• Avoid grapefruit as a precautionary measure.

User Reports & Trends

What are patients saying about hydroxychloroquine on NHS Choices and forums?

Patient feedback across NHS Choices, Patient.info and Mumsnet commonly describes initial gastrointestinal upset such as nausea.

Skin reactions and concerns about long‑term eye damage are frequent topics in forum discussions.

Many patients report slow onset of benefit for autoimmune symptoms, often taking weeks to months to notice improvement.

The pandemic prompted increased public interest and occasional supply pressures for Plaquenil and generic hydroxychloroquine.

Forums emphasise the value of baseline monitoring and clear counselling from clinicians.

Top Reported Adverse Events

• Nausea and other gastrointestinal upset.
• Skin rash and pigmentation changes.
• Headache and dizziness.
• Visual disturbance prompting ophthalmology review.

Access & Purchase Options

High Street Pharmacies

Boots, LloydsPharmacy and Superdrug commonly dispense hydroxychloroquine on presentation of a valid prescription.

Independent community pharmacies also supply prescription items and offer counselling.

Online Pharmacies And NHS E‑Prescriptions

Electronic Prescription Service (EPS) allows GPs to send prescriptions to a nominated pharmacy for collection.

Many UK online pharmacies supply hydroxychloroquine against a valid prescription and must be registered with the General Pharmaceutical Council.

In our online pharmacy, plaquenil is available without a prescription, with discreet delivery to United Kingdom in 5-14 days.

In‑Person Vs Online Checklist

• Timescale: In‑person same‑day in many cases; online depends on verification and delivery times.
• Cost: NHS prescription charge applies for eligible patients in England; private prices vary by supplier.
• Verification: Ensure the online provider is GPhC‑registered and MHRA‑compliant.
• Supply Continuity: Online services may offer repeat dispensing; in‑person pharmacy allows immediate counselling.
• Counselling: High‑street pharmacies typically provide face‑to‑face advice; reputable online pharmacies provide remote pharmacist support.

Mechanism & Pharmacology

Simplified Explanation

How does hydroxychloroquine work for autoimmune disease?

Hydroxychloroquine modulates immune cell activity by altering lysosomal pH and reducing antigen presentation.

This leads to reduced inflammatory cytokine release and decreased immune activation in conditions such as SLE and RA.

The drug also has antiprotozoal properties that historically made it useful for malaria prevention and treatment.

Clinical Terms

• Class: Aminoquinoline (ATC P01BA02).
• Retinal Accumulation: Drug accumulates in melanin‑containing tissues, including the retina, increasing ocular risk over time.
• Pharmacokinetics: Good oral absorption with a long half‑life and tissue accumulation leading to delayed steady‑state.

PK/PD Implications For Monitoring

• Long half‑life means toxicity risk increases with prolonged use and higher cumulative dose.
• Steady‑state may take several weeks, which aligns with the delayed therapeutic onset in autoimmune disease.
• Monitoring requirements include baseline and periodic ophthalmology review and clinical assessment for cardiac symptoms.

Indications & Off‑Label Uses

MHRA‑Approved Uses

• Treatment and prevention of malaria in sensitive regions.
• Disease‑modifying therapy for rheumatoid arthritis.
• Treatment for systemic and cutaneous lupus erythematosus.

Off‑Label Practices In NHS And Private Care

Specialists sometimes use hydroxychloroquine off‑label for other rheumatological or dermatological conditions based on clinical judgement.

Hydroxychloroquine is NOT recommended for COVID‑19 outside clinical trials due to lack of proven benefit.

When used off‑label prescribers should document rationale and counsel patients about evidence, monitoring and risks.

Key Clinical Findings

What do UK and EU studies say about hydroxychloroquine?

Hydroxychloroquine continues to be a mainstay disease‑modifying antirheumatic drug for SLE and RA with steroid‑sparing benefits when monitored appropriately.

Large trials during the COVID‑19 pandemic did not show clinical benefit and led to removal of that indication from routine practice.

Safety evidence confirms rare but serious retinal toxicity with long‑term use and recognises cardiac risks, particularly when combined with QT‑prolonging agents.

Guidance in the UK and EU stresses baseline eye checks and ECGs where clinically indicated, and weight‑based dosing to reduce retinal risk.

Key Practice Points

• Use weight‑based dosing to limit cumulative retinal exposure.
• Arrange baseline ophthalmology review before long‑term therapy.
• Avoid combinations with known QT‑prolonging medicines.
• Document monitoring plans and report adverse events via Yellow Card.

Alternatives Matrix

NHS Prescribing Alternatives

Pros And Cons Checklist For Shared Decision‑Making

• Efficacy: Hydroxychloroquine is effective in SLE and mild RA and is often pregnancy‑compatible where alternatives are not.
• Monitoring Burden: Alternatives may require more intensive blood testing versus eye monitoring for hydroxychloroquine.
• Pregnancy: Hydroxychloroquine is often maintained in pregnancy for SLE under specialist advice, unlike some DMARDs.
• Cost and Route: Most alternatives have different cost and administration profiles that affect patient preference.

Common Questions

• Will It Damage My Eyes?

Long‑term use at high cumulative doses increases the risk of retinal toxicity.

Baseline ophthalmology review and periodic screening reduce the risk of missing early changes.

• Is It Safe In Pregnancy?

Specialist advice is required and many obstetric/rheumatology teams continue hydroxychloroquine in SLE when benefits outweigh risks.

• Can I Drink Alcohol?

Moderate alcohol is not strictly contraindicated, but excess alcohol can worsen GI side effects and add liver strain with long‑term therapy.

• How Quickly Will It Work?

Therapeutic effects for autoimmune conditions typically appear over weeks to months rather than days.

Escalate to GP or rheumatologist for new visual symptoms, palpitations, severe skin reactions or signs of haemolysis.

NHS Cost & Access Comparison Table

Registration & Regulation

MHRA Approval Process

Plaquenil and authorised generics hold marketing authorisations and are regulated by national agencies including the MHRA in the UK.

Products are subject to pharmacovigilance and safety communications and adverse events should be reported via the Yellow Card scheme.

NHS Prescribing Framework

Hospital specialists commonly initiate DMARD treatment and communicate monitoring plans to GPs for shared care.

Prescribing follows local formularies and commissioning guidance and any MHRA safety notices must be implemented promptly.

Regulatory Compliance Checklist

• Confirm brand and origin against marketing authorisation where required.
• Record batch numbers and expiry for traceability when dispensing.
• Encourage Yellow Card reporting for suspected adverse reactions and follow MHRA guidance.
• Use GPhC‑registered pharmacies and authorised wholesalers for supply.

Storage & Handling

UK Household Storage (Cold/Damp Climate)

Store hydroxychloroquine at room temperature between 15–30°C and protect from moisture and light.

In damp UK homes advise storing medicines away from bathrooms and windows in a dry, temperature‑stable cupboard.

Do not freeze tablets and keep them in original packaging to preserve batch and expiry information.

Guidance From NHS And Pharmacists

Keep all medicines out of reach and sight of children as accidental overdose may be fatal.

When travelling carry medication in original containers with a printed list of medicines and indication for customs or medical review.

Dispose of unused tablets by returning them to a pharmacy for safe disposal rather than household waste.

Household Storage Tips

• Store in a sealed container in a dry room away from heat sources.
• Keep a record of batch number and expiry for reporting if needed.
• Advise patients to show original packaging to clinicians when seeking advice overseas.

Guidelines For Proper Use

UK Pharmacist Counselling Style

Confirm the indication, exact dose and intended duration with the patient at dispensing.

Review the full medication and over‑the‑counter list to check for QT‑prolonging or interacting medicines.

Ensure a baseline ophthalmology referral is documented for long‑term use and advise on the need for regular reviews.

Discuss common side effects such as GI upset and rash and emphasise urgent reporting of visual changes or palpitations.

Explain the missed dose policy and the urgent actions required in case of suspected overdose.

NHS Patient Safety Advice

Document the monitoring plan in shared records and provide written information to the patient.

Encourage adherence and arrange follow up for effectiveness and safety checks according to local protocols.

Patient Handout Template

• Reason for treatment and expected time to benefit (weeks to months for autoimmune disease).
• How to take the medicine and what to do if a dose is missed.
• Side effects to expect and signs that need urgent attention.
• Contact details for pharmacist or GP for questions and Yellow Card reporting information.

Pharmacist Counselling Checklist

• Confirm identity and prescription details and check for allergies.
• Review interacting medications and arrange ECG if required.
• Provide baseline ophthalmology referral information where indicated.
• Advise on safe storage and disposal and provide follow‑up instructions.

Delivery Across United Kingdom