HCQS 300

Tablet · Ipca
PRESCRIPTION MEDICINE

HCQS 300 is a tablet made by Ipca that contains Hydroxychloroquine 300 mg. Hydroxychloroquine is a anti-rheumatic and antimalarial: treats rheumatoid arthritis and lupus; also malaria.

Ingredient (salt)Amount
Hydroxychloroquine300 mg

What it is used for

Treats rheumatoid arthritis and lupus; also malaria.

How it works

Calms the immune system in rheumatoid arthritis, lupus and some skin conditions; also an antimalarial.

How to take it

Usually 200 to 400 mg a day with food. Benefit takes 2 to 3 months. Eye checks are needed every year after 5 years.

Common side effects

  • Nausea
  • Diarrhoea
  • Headache
  • Rash

Get medical help straight away if

  • Blurred vision or trouble reading (eye damage)
  • Fainting or palpitations
  • Low sugar

Be careful

Needs regular eye checks with long use.

Other medicines and interactions

Antacids reduce absorption; take 4 hours apart. Heart rhythm risk with other QT-prolonging medicines. Can lower sugar with diabetes medicines.

Pregnancy and breastfeeding

Usually continued in pregnancy for lupus; acceptable while breastfeeding.

Same ingredients, different strength or form

HCQS 200Zy-Q 200Hqtor 200Hetq 200OXCQ 200Hyq 200Qdmrd-200

Common questions

What is HCQS 300?

HCQS 300 is a tablet by Ipca containing Hydroxychloroquine 300 mg.

What is HCQS 300 used for?

Treats rheumatoid arthritis and lupus; also malaria.

How should I take HCQS 300?

Usually 200 to 400 mg a day with food. Benefit takes 2 to 3 months. Eye checks are needed every year after 5 years. Always follow the dose your doctor or the pack gives.

What are the side effects of HCQS 300?

Common side effects include: Nausea, diarrhoea, headache, rash. Get medical help straight away for: Blurred vision or trouble reading (eye damage), fainting or palpitations, low sugar.

Does HCQS 300 need a prescription?

Yes. In India it is a prescription (Schedule H) medicine, so a pharmacist should sell it only with a doctor's prescription.

Can I take HCQS 300 in pregnancy or while breastfeeding?

Usually continued in pregnancy for lupus; acceptable while breastfeeding.

What are the substitutes for HCQS 300?

We have no other brand with exactly the same composition and strength in our list yet. Ask your pharmacist for an equivalent.

Sources and further reading

NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.

Composition checked against pack details from large Indian online pharmacies. Last reviewed 31 October 2026. Written by Satya Babu.

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For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.