What is a Chloroquine (C₁₈H₂₆ClN₃)?

Chloroquine is an organic compound that was historically used as a primary treatment for malaria. It was developed during World War II and was once widely prescribed. Due to the emergence of chloroquine-resistant malaria parasites, its use has declined but it remains effective in some regions. Chloroquine is also prescribed for autoimmune diseases such as systemic lupus erythematosus (SLE) and rheumatoid arthritis. It gained attention as a potential treatment for COVID-19, though its effectiveness and safety remain controversial and are not recommended in many countries.

Possible side effects include vision problems (retinopathy) and cardiac toxicity, especially with long-term use.

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