HCQS-200 Tablet contains hydroxychloroquine which is used in the treatment of Type 2 diabetes mellitus, acute or chronic rheumatoid arthritis, dyslipidaemia, systemic and discoid lupus erythematosus, polymorphous light eruption, and malaria. This medicine belongs to the class of anti-inflammatory conditions. It may cause common side effects like blurred vision, abdominal pain, nausea, vomiting, loss of appetite, diarrhoea, headache, mood changes, skin rashes, itching, and sensitivity to light.