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Antibiotics

HCQS 400 Mg

HCQS 400 Mg: hydroxychloroquine 400 mg tablets for a daily dose a specialist has set; prescription-only in the EU/EEA.

Key facts: HCQS 400 Mg

Active ingredient & strengthHydroxychloroquine 400 mg
FormatTablet
Legal statusPrescription-only medicine in the EU/EEA
PriceFrom €64.00 (20 pills) · from €2.95 per pill (100 pills)
Delivery3–5 working days to most EU/EEA countries (2–7 by country)
AvailabilityIn stock

Generic Hydroxychloroquine — HCQS 400 Mg. Available in multiple pack sizes.

Price range

€64.00–€295.00
4 pack sizes available · Active ingredient: Hydroxychloroquine

Dispatched within one working day of payment

Pack size & pricing

4 · click to add

  • 20 pills

    €3.20 per unit

    €64.00

  • 30 pills

    €3.15 per unit

    €94.50

  • 50 pillsSave 5%

    €3.05 per unit

    €152.50

  • 100 pillsSave 8%

    €2.95 per unit

    €295.00

  • Secure payment
  • Discreet packaging
  • 3–5 working days
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Why buyers trust this order

Sealed manufacturer packs

Sealed manufacturer blisters or sachets with the batch number and expiry date printed, and the patient information leaflet in every box.

Tracked, with a lost-parcel policy

Tracked shipping on every parcel. If a parcel is lost, we investigate with the courier and resolve it with a replacement shipment or another appropriate solution (see our delivery policy).

Discreet end to end

Plain unbranded box, neutral sender, and a bank statement that shows only your order reference — never a product name.

A person answers, 7 days a week

Questions about ordering, delivery or payment are answered by a person on WhatsApp & Telegram, within our opening hours.

What happens after you order

  1. Order & pay — order and payment confirmed by email

  2. We pack — sealed packs, plain outer box

  3. Dispatched within 1 working day of payment — tracking number emailed

  4. Delivered — 3–5 working days to most EU/EEA countries (2–7 by country), nothing on the outside

About HCQS 400 Mg

HCQS 400 Mg: hydroxychloroquine 400 mg tablets for a daily dose a specialist has set; prescription-only in the EU/EEA.

HCQS 400 Mg: pack and delivery facts

  • Active ingredients: Hydroxychloroquine.
  • 4 pack sizes to choose from, with a lower per-unit price on the larger packs.
  • Plain, unbranded packaging — nothing on the outside indicates the contents.
  • Delivered to all 27 EU + 3 EEA countries: 3–5 working days to most EU/EEA countries (2–7 by country).

Part of our Antibiotics range.

What is HCQS 400 Mg?

HCQS 400 Mg is the higher of the two hydroxychloroquine strengths we stock. Hydroxychloroquine is a disease-modifying medicine used long-term in autoimmune conditions — most commonly systemic lupus erythematosus and rheumatoid arthritis — and for malaria treatment or prevention in specific regions where it remains effective. The 400 mg tablet exists for convenience: patients whose rheumatologist has established a stable 400 mg daily maintenance dose can take one tablet instead of two. Which strength suits you is your specialist's decision; confirm your dose before ordering.

How long does HCQS 400 Mg take to work?

Hydroxychloroquine is a slow-acting medicine, and the leaflet is explicit about this: in autoimmune conditions, benefit builds gradually over weeks, with the full effect often taking two to three months of consistent daily dosing. That is normal pharmacology, not a faulty batch — the drug accumulates in tissues before symptom control appears. This is why treatment is planned as an ongoing course rather than something taken as needed, and why stopping early because 'nothing is happening' is the most common mistake. For malaria indications the schedule is entirely different and shorter, set by a doctor for the specific region. Whatever the indication, take it at the same time daily and keep the follow-up appointments your prescriber schedules.

HCQS 400 Mg vs HCQS 200 Mg — what is the difference?

Order the strength that matches your prescription, not the bigger number. HCQS 200 Mg contains half as much per tablet; autoimmune dosing is often calculated from body weight, with lower doses reducing the small long-term risk of retinal side effects. HCQS 400 Mg is for patients whose specialist has set a 400 mg daily dose, and side effects such as nausea, headache and eye-related risk rise with dose. Hqcheal 200 Mg is another hydroxychloroquine 200 mg tablet, from a different manufacturer. If your prescription reads '200 mg twice daily', confirm with your prescriber before switching tablet sizes.

What should you know before taking HCQS 400 Mg?

The leaflet explains how to take HCQS 400 Mg in relation to food; nausea is a common side effect, so tell your doctor if it troubles you. Use it only for evidenced indications under medical guidance: lupus, rheumatoid arthritis, and malaria where a doctor has prescribed it. It has no evidenced role against COVID-19 and we make no such claims. Long-term users need periodic eye examinations, because cumulative dose is the main driver of the rare retinal toxicity — at 400 mg daily this monitoring matters more than at 200 mg. Tell your doctor about heart rhythm problems, psoriasis, G6PD deficiency, and any other medicines, and never double up after a missed tablet.

Why buy HCQS 400 Mg from Kam4eu?

Hydroxychloroquine is often taken for years, so supply and authenticity matter. Kam4eu ships HCQS 400 Mg as sealed manufacturer strips with batch number and expiry visible on every blister and the full patient leaflet in the box. Packs start at €64.00 for 20 pills. Orders are dispatched within one working day of payment in plain, unbranded packaging, with tracking on every parcel; standard delivery takes 3–5 working days to most EU and EEA countries (2–7 by country) and is free over €110.

What are the side effects of HCQS 400 Mg?

HCQS 400 Mg contains hydroxychloroquine, and its leaflet lists nausea, stomach cramps, diarrhoea, loss of appetite, headache, dizziness, and skin rash or itching as the common side effects — often easing as your body adjusts, especially when taken with food. Rare but serious effects include retinal damage (blurred vision, difficulty reading, light sensitivity), heart-rhythm changes such as a prolonged QT interval, severe skin reactions, muscle weakness, and very low blood sugar — seek medical help urgently if you notice vision changes, palpitations, fainting, or blistering skin. Because this is the higher 400 mg strength, dose-related risks such as eye and heart effects matter more: cumulative dose over years drives retinal risk, so regular eye checks are part of long-term treatment.

Who should not take HCQS 400 Mg?

Do not take HCQS 400 Mg if you are allergic to hydroxychloroquine, chloroquine, or related 4-aminoquinolines, or if you have pre-existing retinal or macular disease — this medicine can worsen it. Use it only under medical supervision for a diagnosed condition such as rheumatoid arthritis, lupus, or malaria prevention as prescribed. Extra caution is needed with heart disease or rhythm problems (QT prolongation), liver or kidney impairment, G6PD deficiency, psoriasis, epilepsy, and diabetes, since hydroxychloroquine can lower blood sugar. Important interactions include other QT-prolonging medicines (certain antibiotics and antiarrhythmics), digoxin, insulin and diabetes tablets, and antacids, which should be separated by several hours. Long-term users need periodic retinal screening — do not skip it.

How should you store HCQS 400 Mg and check it's genuine?

Keep HCQS 400 Mg in a cool, dry place below 25–30°C, protected from light and moisture, and always in its original blister strip until use — hydroxychloroquine tablets should not be decanted into loose containers. Store well out of the reach of children; an accidental overdose in a child is a medical emergency. Authenticity checks for this product: every blister pocket should be sealed and unbroken, the batch number and expiry date must be printed on both the foil and the outer carton and must match, the box should be undamaged, and a patient leaflet should be inside. Query anything that looks resealed before taking a tablet.

What does HCQS 400 Mg cost? Price per tablet explained

HCQS 400 Mg pricing rewards larger packs. Current prices: 20 pills for €64.00 (€3.20 per pill), 30 pills for €94.50 (€3.15 per pill), 50 pills for €152.50 (€3.05 per pill) and 100 pills for €295.00 (€2.95 per pill). Buying 100 pills works out 8% cheaper per pill than the smallest pack. For a condition managed long-term under medical supervision, the larger packs make practical sense; for a short prescribed course, the smaller pack is the honest choice. Buy what your treatment plan actually needs.

About Hydroxychloroquine

General information about the active ingredient in HCQS 400 Mg.

See the full Hydroxychloroquine guide & all Hydroxychloroquine products

What is Hydroxychloroquine?

Hydroxychloroquine, sometimes abbreviated HCQS, is a medicine used in the prevention and treatment of malaria caused by certain Plasmodium parasites, and in the long-term management of some autoimmune conditions. Its established uses in this second group include rheumatoid arthritis and systemic lupus erythematosus (lupus), where it is taken to help control the disease over time. It should be used only for these approved purposes, under the supervision of a doctor.

How it works

Hydroxychloroquine has more than one type of action. As an antimalarial, it accumulates inside the malaria parasite and interferes with how the parasite processes substances within the red blood cell, which is harmful to the parasite. In autoimmune conditions, it is thought to work as an immunomodulator — gently dampening parts of the immune system that are overactive — which can help reduce inflammation, joint symptoms and skin involvement over a period of weeks to months.

How to take it

Take hydroxychloroquine exactly as prescribed and read the patient information leaflet. It is usually taken as tablets with or after food, or with a glass of milk, to reduce stomach upset. When used for autoimmune conditions, it often needs to be taken regularly for several weeks before the full benefit is felt, so continue taking it even if you do not notice an immediate improvement. Do not change the dose or stop without advice.

Side effects

Common (usually mild and temporary):

  • Nausea or stomach upset
  • Diarrhoea
  • Loss of appetite
  • Headache
  • Dizziness
  • Skin rash or itching

Stop and seek medical help if you experience:

  • Signs of a severe allergic reaction such as swelling of the face, lips, tongue or throat, or difficulty breathing — seek emergency care
  • New or changing vision problems, blurred vision, difficulty seeing colours or reading — stop and contact your doctor urgently, as eye effects can occur with long-term use
  • Severe, blistering or peeling skin reactions
  • Fast, slow or irregular heartbeat, fainting, or palpitations
  • Signs of low blood sugar, severe muscle weakness, or unusual mood or mental changes

Safety & who should not take it

  • Use hydroxychloroquine only for its approved purposes — malaria and certain autoimmune conditions — and only as prescribed by a doctor.
  • Tell your doctor about any eye or retinal problems, heart conditions, liver or kidney problems, psoriasis, or a deficiency of the enzyme G6PD before starting.
  • Long-term use can affect the eyes, so attend any eye examinations your doctor arranges and report vision changes promptly.
  • Inform your doctor of all other medicines you take, as it can interact with several drugs, including some that affect heart rhythm.
  • If you are pregnant, planning a pregnancy or breastfeeding, discuss this with your doctor before taking it.
  • Keep hydroxychloroquine well out of the reach of children, as accidental overdose can be very dangerous.
  • Do not stop or change your treatment without medical advice, and return unused medicine to a pharmacy for safe disposal.

Storage

Store in the original packaging below 25°C, away from heat, light and moisture, and very securely out of the sight and reach of children. Do not use after the expiry date, and return unused medicine to a pharmacy for safe disposal.

Frequently asked questions

What is hydroxychloroquine used for?+

Its established uses are for preventing and treating certain types of malaria and for managing some autoimmune conditions such as rheumatoid arthritis and lupus. It should be used only for these approved purposes under medical supervision.

Why does it take a while to work for arthritis or lupus?+

In autoimmune conditions it acts gradually on the immune system, so it can take several weeks of regular use before the full benefit is noticed. Keep taking it as prescribed unless your doctor advises otherwise.

Why are eye check-ups recommended?+

Long-term use can occasionally affect the retina, so doctors arrange periodic eye examinations to monitor for this. Report any changes in your vision to your doctor promptly.

Important: This information is general and not a substitute for medical advice. Always read the patient information leaflet supplied with your medicine and consult a doctor or pharmacist before use — especially if you have existing health conditions or take other medication.

Pack sizes & pricing

The larger the pack, the lower the price per unit.

  • 20 pills€64.00
  • 30 pills€94.50
  • 50 pills€152.50
  • 100 pills€295.00

Delivery & discreet packaging

  • Delivery to all 27 EU + 3 EEA countries: 3–5 working days to most EU/EEA countries (2–7 by country). Free on orders over €110.00, otherwise €20.00 standard.
  • Dispatched within one working day of payment clearing, with a confirmation email.
  • Plain, unbranded outer packaging — nothing on the outside indicates the contents.
  • VAT included at checkout. IOSS covers EU deliveries, so EU orders have no customs bill on arrival; Iceland, Liechtenstein and Norway handle their own import formalities.

HCQS prices by strength

HCQS options that contain hydroxychloroquine alone, with their current list prices. The prescriber sets the strength and dose — the price per unit is not a guide to which one you need.

HCQSFromLowest per unit
HCQS 200 Mg200 mg€49.0020 pills€2.20 per pill
HCQS 400 Mg (this page)400 mg€64.0020 pills€2.95 per pill

Where to buy HCQS 400 Mg in Europe

HCQS 400 Mg isn't stocked on European high-street pharmacy shelves — it's an imported generic, so buying happens online. Kam4eu ships sealed HCQS 400 Mg from €64.00 (4 pack sizes, lower per-unit price on larger packs) to all 27 EU + 3 EEA countries. Orders dispatch within one working day of payment; standard delivery takes 3–5 working days to most EU/EEA countries (2–7 by country), free over €110.00.

  • Pay in EUR — SEPA bank transfer or PayPal. For bank transfer, use only your order reference so your statement stays discreet.
  • Plain, unbranded packaging with tracked delivery. VAT is included at checkout; IOSS covers EU deliveries, so EU orders have no customs bill on arrival.
  • Sealed manufacturer blisters or sachets with batch number and expiry, plus the patient information leaflet in every box.
  • Site and order emails in 24 European languages. Prices are in euros (EUR).

Common questions about HCQS 400 Mg

How much does HCQS 400 Mg cost?+

HCQS 400 Mg starts from €64.00. Several pack sizes are available — the larger the pack, the lower the per-unit price. European delivery is free on orders over €110, otherwise €20 standard (3–5 working days to most countries, 2–7 by country).

How is HCQS 400 Mg delivered across Europe?+

Orders ship in plain, unbranded packaging from our European fulfilment hub, usually within one working day of payment clearing. Standard delivery reaches all 27 EU + 3 EEA countries in 3–5 working days to most of them (2–7 depending on the country); express (1–2 working days) is also available. For EU orders, VAT and duties are settled at checkout via IOSS, so there are no surprise bills on arrival.

What is the active ingredient in HCQS 400 Mg?+

The active ingredient in HCQS 400 Mg is Hydroxychloroquine. Always read the patient information leaflet and consult a doctor or pharmacist before first use.

How do I pay for my order?+

Choose your method at checkout: secure bank/SEPA transfer or PayPal. You'll receive clear payment confirmation by email, and we dispatch within one working day of payment clearing.

Is HCQS 400 Mg discreetly packaged?+

Yes. Every order ships in plain, unbranded outer packaging — nothing on the outside indicates the contents or the pharmacy.

Is HCQS 400 Mg a starting dose?+

Not without your specialist's decision. Hydroxychloroquine doses are calculated by the specialist, often from body weight, and the 400 mg tablet is for patients whose daily dose is 400 mg. Higher doses increase nausea, headache and long-term retinal risk without speeding up benefit; discuss the dose with your doctor first.

How long before HCQS 400 Mg helps my lupus or arthritis symptoms?+

Expect a gradual effect. Hydroxychloroquine typically takes several weeks to show benefit in autoimmune conditions, and the full effect can take two to three months of daily use. This slow onset is documented in the leaflet and is normal — do not stop early or raise the dose yourself if improvement feels slow.

Does HCQS 400 Mg treat or prevent COVID-19?+

No. Large trials found hydroxychloroquine ineffective for COVID-19, and EU regulators do not authorise it for that purpose. We sell HCQS 400 Mg only for its evidenced uses — autoimmune conditions and malaria — under medical guidance. Please do not order it with COVID-19 in mind.

Why does HCQS 400 Mg need eye check-ups?+

Long-term hydroxychloroquine carries a small risk of retinal damage that rises with cumulative dose and years of use, which is why prescribers arrange baseline and periodic eye examinations. At 400 mg daily the cumulative dose builds faster than at 200 mg, so keeping those appointments is part of taking this strength safely.

Can I split HCQS 400 Mg tablets to make two 200 mg doses?+

Not reliably — film-coated hydroxychloroquine tablets are not scored for splitting, and uneven halves mean uneven dosing. If your prescription is 200 mg once or twice daily, order HCQS 200 Mg instead; it is made for exactly that schedule and works out appropriately per dose.

Can I take HCQS 400 Mg with food or alcohol?+

The leaflet explains how to take HCQS 400 Mg in relation to food; nausea and stomach upset are common side effects, so tell your doctor if they trouble you. Both alcohol and hydroxychloroquine are processed by the liver, so ask your doctor how much alcohol, if any, is sensible for you.

What if HCQS 400 Mg doesn't seem to work at first?+

For autoimmune conditions like rheumatoid arthritis or lupus, hydroxychloroquine is slow-acting — meaningful improvement often takes six to twelve weeks, sometimes longer. Do not increase the dose yourself or stop early. If there is no benefit after several months, your doctor will reassess the treatment plan.

Can I split an HCQS 400 Mg tablet?+

Only if your prescriber tells you to. Some doctors do use half-tablets to fine-tune long-term dosing, but film-coated hydroxychloroquine tablets taste extremely bitter when cut and unscored tablets split unevenly. If your target dose is 200 mg, the dedicated HCQS 200 Mg tablet is usually the better option.

How long does HCQS 400 Mg stay in your system?+

A very long time. Hydroxychloroquine has an elimination half-life of around 40 to 50 days because it accumulates in body tissues, so it can take months to clear completely after stopping. This is also why missing a single dose matters little, and why effects fade slowly after discontinuation.

Does HCQS 400 Mg expire, and is it legal to order?+

Yes — the expiry date is printed on each blister and the carton; do not use tablets beyond it. Hydroxychloroquine is a legitimate prescription medicine used for malaria and autoimmune conditions, and ordering it for a doctor-diagnosed indication is the proper route. Import rules for personal medicine vary by country, so check yours.

Health guides

Guides & related reading for HCQS 400 Mg

6 research-backed guides — newest first.

Hydroxychloroquine (HCQS): Its Established Uses Explained

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Amoxicillin and alcohol: what actually happens if you drink

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Amoxicillin: uses, dosage and how to take this antibiotic correctly

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Amoxicillin: Uses, Safety and Why You Must Finish the Course

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Ivermectin: Its Established, Approved Uses Explained

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UTI Antibiotics: What to Know Before You Start

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Before you buy HCQS 400 Mg

  • Read the patient information leaflet supplied with the product in full before first use.
  • Tell your doctor or pharmacist about any existing health conditions and other medicines you take, so they can check it is suitable for you.
  • Do not exceed the dose described in the leaflet, and never take more than one medicine for the same purpose at the same time.
  • Buy from a reputable source and check the packaging and leaflet are intact on arrival.
  • Keep all medicines out of the sight and reach of children.

Customer reviews

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Reviews on Kam4eu come only from verified orders — never from us.

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  • Every review is checked by our team before it appears

Reviewed by the Kam4eu editorial teamMedicine information reviewed 13 August 2026Next review due 13 August 2027

Sources for the medical information on this page

This page is general product and medicine information, not a prescription or a substitute for medical advice. Always read the patient information leaflet supplied with your medicine, and speak to a doctor or pharmacist before starting HCQS 400 Mg — especially if you take other medicines or have a heart, liver or kidney condition.

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