Hydroxychloroquine is available as the brand-name drug Plaquenil. Generic drugs usually cost less than the brand-name version. Hydroxychloroquine may be used as part of a combination therapy. Hydroxychloroquine sulfate tablets usp uses Malaria chloroquine prophylaxis Hydroxychloroquine is a derivative of chloroquine that has both antimalarial and antiinflammatory activities and is now most often used as an antirheumatologic agent in systemic lupus erythematosis and rheumatoid arthritis. All doses below are expressed as hydroxychloroquine sulfate salt. Hydroxychloroquine sulfate salt 200 mg is equivalent to hydroxychloroquine base 155 mg. Find patient medical information for Hydroxychloroquine Sulfate Bulk on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Hydroxychloroquine is used to treat lupus erythematosus and rheumatoid arthritis. It isn’t fully understood how this drug works to treat lupus erythematosus or rheumatoid arthritis. That means you may need to take it with other drugs. It treats malaria by killing the parasites that cause the disease. Hydroxychloroquine sulphate Hydroxychloroquine Information for Providers AIDSinfo, Hydroxychloroquine Professional Patient Advice - Plaquenil to treat hair lossChloroquine protein synthesisHydroxychloroquine sulfate 200 mg buyFda approval chloroquine-primaquine Hydroxychloroquine sulfate is a colorless crystalline solid, soluble in water to at least 20 percent; chemically the drug is 2-4-7-Chloro-4-quinolylaminopentylethylamino ethanol sulfate 11. PLAQUENIL hydroxychloroquine sulfate tablets contain 200 mg hydroxychloroquine sulfate, equivalent to 155 mg base, and are for oral administration. Plaquenil Hydroxychloroquine Uses, Dosage, Side Effects.. Hydroxychloroquine Sulfate Bulk Uses, Side Effects.. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Hydroxychloroquine sulfate. An antimalarial, antirheumatic drug, often used as a disease-modifying agent in rheumatoid arthritis, systemic lupus erythematosus, and some dermatological diseases. It is frequently sold as a sulfate salt known as hydroxychloroquine sulfate. 200 mg of the sulfate salt is equal to 155 mg of the base. Brand names of hydroxychloroquine include Plaquenil, Hydroquin, Axemal in India, Dolquine, Quensyl, Quinoric. References Hydroxychloroquine is classified as an anti-malarial drug. It is similar to chloroquine Aralen and is useful in treating several forms of malaria as well as lupus erythematosus and rheumatoid arthritis. Its mechanism of action is unknown. Malarial parasites invade human red blood cells.