Chloroquine is now uncommonly used in favor of its derivative hydroxychloroquine. In the United States, hydroxychloroquine is most often used for its anti-inflammatory effects in rheumatology and dermatology. Sjogrens flare plaquenil and itching Plaquenil hearing loss Antimalarials and effects on lipid metabolism. There is increasing evidence demonstrating the beneficial impact of antimalarial agents on lipid metabolism besides glycemic control Table 2. In rat hepatocytes, CQ was shown to be an effective inhibitor of cholesterol synthesis Beynen et al. 1981. Hydroxychloroquine Plaquenil is considered a disease-modifying anti-rheumatic drug DMARD. It can decrease the pain and swelling of arthritis. It may prevent joint damage and reduce the risk of long-term disability. Hydroxychloroquine is in a class of medications that was first used to prevent and treat malaria. Aug 28, 2015 However, the metabolism of amodiaquine, which is structurally related to chloroquine, has been found to be impaired in patients with CYP2C8 polymorphisms 16. Still, little is known about polymorphisms in CYP2D6, CYP3A4, and CYP3A5 and their effects on HCQ metabolism in SLE patients. While early toxicity may be asymtomatic, patients with more advanced stage of toxicity may complain of color vision changes or paracentral scotomas. Its toxic effects on the retina are seen in the macula. Plaquenil metabolism Plaquenil hydroxychloroquine sulfate dose, indications., Hydroxychloroquine Plaquenil Plaquenil for aps during pregnancyPlaquenil blindness As PLAQUENIL may enhance the effects of a hypoglycemic treatment, a decrease in doses of insulin or antidiabetic drugs may be required. Drugs That Prolong QT Interval And Other Arrhythmogenic Drugs. PLAQUENIL prolongs the QT interval and should not be administered with other drugs that have the potential to induce cardiac arrhythmias. Plaquenil Hydroxychloroquine Uses, Dosage, Side Effects.. Association of Polymorphisms of Cytochrome P450 2D6 With.. Interactions between Plaquenil Oral and selected-cyp2d6.. Plaquenil® hydroxychloroquine sulfate is a white or practically white, crystalline powder, freely soluble in water; practically insoluble in alcohol, chloroform, and in ether. The chemical name for hydroxychloroquine sulfate is 2-4-7-Chloro-4-quinolylaminopentylethylamino ethanol sulfate 11. Hydroxychloroquine Plaquenil, chloroquine Aralen, and quinacrine Atabrine are medications that were originally used to prevent or treat malaria. However, during World War II it was also found that these medications were effective in treating the symptoms of lupus. Plaquenil hydroxychloroquine is an antimalarial medication used to treat or prevent malaria, a disease caused by parasites, which enter the body through the bite of a mosquito. Plaquenil is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus.