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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Which of the following antimalarial has immunomodulatory effect?
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The correct answer is  Hydroxychloroquine is an antimalarial agent with immunosuppressant propeies. It is thought to suppress intracellular antigen processing and loading of peptides onto MHC class II molecules by increasing the pH of lysosomal and endosomal compaments, thereby decreasing T-cell activation. Ref: Katzung 11th edition, Chapter 61.