| hydroxychloroquine | <drug> A drug used to treat and prevent malaria and to treat the symptoms of lupus erythematosus. It is also used to treat rheumatoid arthritis when used in combination with other drugs. It has the chemical formula of C18H26ClN3O. (09 Oct 1997) |
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| hydroxychloroquine sulfate | A quinoline derivative; an antimalarial agent whose actions and uses resemble those of chloroquine phosphate; also used in the treatment of lupus erythematosus and rheumatoid arthritis. (05 Mar 2000) |