nonoise this drug is used for decades without great negative effect....The side negative effect comes from too much or in exceptional medical case...One of the cheapest and safest drug....
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Chloroquine was discovered in 1934 by Hans Andersag.[4][5] It is on the World Health Organization’s List of Essential Medicines, the safest and most effective medicines needed in a health system.[6] It is available as a generic medication.[1] The wholesale cost in the developing world is about US$0.04.[7] In the United States, it costs about US$5.30 per dose.