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Chloroquine

This page was reviewed or revised on Tuesday, October 11, 2011 3:30 PM

Environmental Health and Prevention Services

Why do I need to take this medication?

• Malaria is the most common life-threatening infectious disease faced by Canadian travellers to high-risk areas of the world.
• Chloroquine is an anti-malarial medication and used to be the primary drug used to prevent and treat Malaria.
• Over time the parasites that cause Malaria have become resistant to Chloroquine.

Who should NOT take this medication?

• Women who are pregnant, unless the risk for Malaria is high and unavoidable.
• Persons with known sensitivity to chloroquine or related drugs.
• Persons with certain visual problems, especially retinal field changes.

What are the side effects of this medication?

Occasional:
Skin rashes, headache, nausea and vomiting, hair and skin changes, visual
disturbances

Rare:
Convulsions, hearing problems

How do I take this medication?

• Take 2 tablets at the same time, once a week, starting 1 week before entering malarious area, continue weekly while there for 4 weeks after leaving the area.
• Take medication with water and a full stomach.

Please note:

1. It is very important to take this medication as prescribed, and especially to continue to take it for 4 weeks after leaving a malarious area.
2. No protective medication is 100% effective in preventing malaria. The use of insect repellents and impregnated bed nets is highly recommended.
3. Persons with sudden fever, headaches, joint aches and other symptoms of possible malaria during or following their trip should seek qualified medical attention.  Malaria deaths are frequently the result of delays in diagnosis and treatment.