Chloroquine

Antimalarial
PRESCRIPTION ONLY IN INDIA

Chloroquine is a antimalarial found in 1 medicine sold in India, such as Lariago. Below: what it is for, how it works, how to take it, side effects, interactions and pregnancy advice.

What it is used for

Treats and prevents some types of malaria.

How it works

An antimalarial for malaria caused by sensitive parasites (mainly P. vivax) and occasionally for prevention.

How to take it

Taken as a 3-day course after food, as prescribed.

Common side effects

  • Nausea
  • Headache
  • Itching (common in people of African origin)
  • Blurred vision

Get medical help straight away if

  • Fainting or palpitations
  • Vision changes
  • Fits

Be careful

Can cause nausea and itching; take as prescribed.

Other medicines and interactions

Antacids reduce absorption. Heart rhythm risk with other QT-prolonging medicines.

Pregnancy and breastfeeding

Considered acceptable in pregnancy and breastfeeding for malaria treatment.

Brands of Chloroquine (1)

Lariago

Common questions

What is Chloroquine used for?

Treats and prevents some types of malaria.

How does Chloroquine work?

An antimalarial for malaria caused by sensitive parasites (mainly P. vivax) and occasionally for prevention.

How should I take Chloroquine?

Taken as a 3-day course after food, as prescribed.

What are the side effects of Chloroquine?

Common: Nausea, headache, itching (common in people of African origin), blurred vision. Get help straight away for: Fainting or palpitations, vision changes, fits.

Does Chloroquine interact with other medicines?

Antacids reduce absorption. Heart rhythm risk with other QT-prolonging medicines.

Is Chloroquine safe in pregnancy and breastfeeding?

Considered acceptable in pregnancy and breastfeeding for malaria treatment.

Does Chloroquine need a prescription in India?

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

Which brands contain Chloroquine?

Lariago.

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.

Last reviewed 31 October 2026. Written by Satya Babu from standard prescribing information.

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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.