Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Visual field test for hydroxychloroquine Plaquenil and catching colds Hydroxychloroquine cambia los dias de menstruacion Does plaquenil cause dark urine Availability. 200 mg tablets. Actions. Derivative closely related to chloroquine. Antimalarial activity is believed to be based on ability to form complexes with DNA of parasite, thereby inhibiting replication and transcription to RNA and DNA synthesis of the parasite. CYP2D6 inhibitors, such as hydroxychloroquine, could theoretically impair propranolol metabolism; the clinical significance of such interactions is unknown. Hydrocodone Moderate Concomitant use of hydrocodone with hydroxychloroquine may increase hydrocodone plasma concentrations and prolong opioid adverse reactions, including hypotension, respiratory depression, profound sedation, coma, and death. Hydroxychloroquine oral tablet can interact with other medications, vitamins, or herbs you may be taking. An interaction is when a substance changes the way a drug works. This can be harmful or prevent the drug from working well. To help avoid interactions, your doctor should manage all of your medications carefully. Hydroxychloroquine may also be used for purposes not listed in this medication guide. Hydroxychloroquine is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Hydroxychloroquine interactions with famotidine Hydroxychloroquine Oral Tablet 200Mg Drug Medication Dosage Information, Plaquenil hydroxychloroquine sulfate dose, indications. Effect of plaquenil on free light chainsChloroquine phosphate degradation Hydroxychloroquine Plaquenil is considered a disease-modifying anti-rheumatic drug DMARD. It can decrease the pain and swelling of arthritis, 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. Today, it is used to treat rheumatoid PATIENT FACT SHEET Hydroxychloroquine Plaquenil. Hydroxychloroquine Side Effects, Dosage, Uses, and More. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Not for administration with other drugs that have potential to prolong QT interval; hydroxychloroquine prolongs QT interval; ventricular arrhythmias and torsades de pointes reported in patients taking hydroxychloroquine Skeletal muscle myopathy or neuropathy leading to progressive weakness and atrophy of proximal muscle groups. Consumer information about the medication HYDROXYCHLOROQUINE - ORAL Plaquenil, includes side effects, drug interactions, recommended dosages, and storage information. Read more about the prescription drug HYDROXYCHLOROQUINE - ORAL. Hydroxychloroquine can be taken with a glass of milk or a meal to decrease nausea. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take hydroxychloroquine exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.