Hydroxychloroquine Sulphate is an antimalarial drug that also has anti-inflammatory, immunomodulatory and anticoagulant effects. At present, hydroxychloroquine is mainly used in clinical treatment of rheumatoid arthritis, juvenile chronic arthritis, discoid lupus erythematosus
and systemic erythema. Lupus, but the onset of clinical effect is slow, it usually takes 2 to 4 months.

The pharmacological effects of this drug are not very clear. It may be related to stabilizing the lysosomal membrane, inhibiting the formation of prostaglandins, inhibiting the chemotacticity of polymorphonuclear cells and the role of phagocytic cells, and
may interfere with monocyte interleukin- 1 formation and inhibition of neutrophil superoxide release.

Hydroxychloroquine Sulphate is mainly used for inhibiting the symptoms of malaria and also for the treatment of malaria.It is also used in the prevention and treatment of silicosis.