Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine: Incidence not known Some side effects of hydroxychloroquine may occur that usually do not need medical attention. Hydroxychloroquine sarcoidosis Can hydroxychloroquine be used for pneumonia UpToDate, electronic clinical resource tool for physicians and patients that provides information on Adult Primary Care and Internal Medicine, Allergy and Immunology, Cardiovascular Medicine, Emergency Medicine, Endocrinology and Diabetes, Family Medicine, Gastroenterology and Hepatology, Hematology, Infectious Diseases, Nephrology and. Hydroxychloroquine is used to treat lupus erythematosus and rheumatoid arthritis. It’s also used to prevent and treat malaria. How it works. Hydroxychloroquine is an antimalarial drug. Hydroxychloroquine is in a class of drugs called antimalarials. It is used to prevent and treat acute attacks of malaria. It is also used to treat discoid or systemic lupus erythematosus and rheumatoid arthritis in patients whose symptoms have not improved with other treatments. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. These side effects may go away during treatment as your body adjusts to the medicine. Hydroxychloroquine uptodate Accidental hydroxychloroquine overdose resulting in., Hydroxychloroquine Side Effects, Dosage, Uses, and More Hydroxychloroquine pulmonary toxicityHydroxychloroquine tablets usesPlaquenil free drug Hydroxychloroquine is a moderate inhibitor of CYP2D6. Acetazolamide Moderate Caution is warranted with the coadministration of hydroxychloroquine and antiepileptic drugs, such as acetazolamide. Hydroxychloroquine can lower the seizure threshold; therefore, the activity of antiepileptic drugs may be impaired with concomitant use. Plaquenil hydroxychloroquine sulfate dose, indications.. Hydroxychloroquine MedlinePlus Drug Information. CDC - Malaria - Diagnosis & Treatment United States - Treatment U. S.. Applies to hydroxychloroquine oral tablet Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Hydroxychloroquine HCQ is a disease-modifying anti-rheumatic drug DMARD typically used for the treatment of various rheumatic and dermatologic diseases. Three studies of HCQ in OA, including one abstract and one letter, are available and use a wide variety of outcome measures in small patient populations. Hydroxychloroquine is used to prevent or treat malaria infections caused by mosquito bites. It does not work against certain types of malaria chloroquine-resistant. The United States Center for.