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. Chloroquine resistance areas Plaquenil cardiotoxicity Can plaquenil cause edema Eye damage from plaquenil There are guidelines on the amount of Plaquenil a person should be able to take safely in a lifetime, and Katz encourages those taking the medication to discuss this with their ophthalmologists. “I think there are some people, like Ann, whose bodies, for whatever reason, don’t metabolize drugs as well,” he says. Plaquenil is also known by its drug name, Hydroxychloroquine. Plaquenil should be used with caution in people with skin symptoms of psoriasis since it can cause a severe flare-up. Plaquenil may not be appropriate for people with certain vision conditions or known hypersensitivity to related drugs. Plaquenil should not be used long-term by children. Let your healthcare provider know if you have psoriasis, liver disease, alcoholism, or a G-6-PD deficiency before using Plaquenil. You should not take Plaquenil if you are allergic to any similar anti-malarial medications. 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. Who should not take plaquenil Hydroxychloroquine MedlinePlus Drug Information, Plaquenil Hydroxychloroquine MyPsoriasisTeam Side effects of taking hydroxychloroquinePlaquenil help decrease inflammationPuedo beber alcohol si tomo plaquenil You should not take this medicine if you already have problems with the retinas in your eyes. You should not take this if you have an allergy to antimalarial medications. Read our easy-to-print PDF version of this fact sheet. Lupus Medicines Hydroxychloroquine - Brigham and Women's.. Plaquenil Warnings and Precautions. When to Avoid Plaquenil. Severe Interactions These medications are not usually taken together. Consult your healthcare professional e.g. doctor or pharmacist for more in formation. These medications may interact and cause very harmful effects. Consult your healthcare professional e.g. doctor or pharmacist for more in formation. Aug 29, 2014 Unfortunately, cessation of Plaquenil intake may not be a remedy since not infrequently, patients will develop objective evidence of progression despite discontinuation of the drug. Thus, the possibility of toxicity should not be disregarded and close monitoring of the ocular findings is required. PLAQUENIL may prevent life-threatening complications. PLAQUENIL prolongs the QT interval. Ventricular arrhythmias and torsades de pointes have been reported in patients taking PLAQUENIL see OVERDOSAGE. Therefore, PLAQUENIL should not be administered with other drugs that have the potential to prolong the QT interval see DRUG INTERACTIONS.