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. What is chloroquine phosphate used for What is the drug plaquenil used to treat Highlights for hydroxychloroquine. Hydroxychloroquine oral tablet is available as a brand-name drug and a generic drug. Brand name Plaquenil. Hydroxychloroquine comes only as a tablet you take by. The findings were suspicious for retinal toxicity, and the patient did reveal a history of Plaquenil use starting at age 30 and lasting for 15 years. She also recalled being asked to discontinue the medication due to an unspecified “retinal problem.” The HCQ story begins in 1638 when the wife of the Viceroy of Peru, Countess Cinchona, acquired malaria while living in the New World. Rather than getting the “approved” therapy, blood-letting, she was treated by an Incan herbalist with the bark of a tree eventually, named for the countess-Cinchona Tree. 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. History of plaquenil Plaquenil Side Effects Common, Severe, Long Term -, How to Succeed in Plaquenil Screenings Plaquenil and discoid lupus s dosageHydroxychloroquine diareaHydroxychloroquine used for diabetes Hydroxychloroquine, sold under the brand name Plaquenil among others, is a medication used for the prevention and treatment of certain types of malaria. Specifically it is used for chloroquine-sensitive malaria. Other uses include treatment of rheumatoid arthritis, lupus, and porphyria cutanea tarda. It is taken by mouth. Common side effects include vomiting, headache, changes in vision and muscle weakness. Severe side effects may include allergic reactions. It does not appear to be safe during Hydroxychloroquine - Wikipedia. The Nine Lives of Hydroxychloroquine RheumNow.. New Plaquenil Guidelines. Mistake in the canvas Martin J Bergman reminds us the history of the wife of the Viceroy of Peru, Countess Cinchona. She was cured of malaria by an Incan herbalist with the bark of a tree in 1638. He talks about Francisca Enriquez de Rivera, second wife of the IV Count of Chinchon, Luis Jerónimo Fernandez de Cabrera y Bobadilla. These drugs were initially used to prevent and to treat malaria but are no longer used for those purposes; more effective drugs have since been developed. Today’s AMs are hydroxychloroquine Plaquenil®, chloroquine Aralen®, and quinacrine Atabrine®. For women, start with 100 pounds, and add 5 pounds for every inch over 5 feet. For men, start with 106 pounds, and add 6 pounds for every inch over 5 feet. The maximum dose of Plaquenil is 6.5 mg/kg of ideal body weight per day, regardless of whether a person is overweight, underweight, or normal weight.