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. Plaquenil 200 mg brch Hydroxychloroquine interactions with alcohol Mg 155 mg base to 400 mg 310 mg base PO per day, administered as a single dose or in 2 divided doses. Antimalarials and/or glucocorticoids are of benefit and may be used for the treatment of SLE without major organ manifestations; however, judicious use of hydroxychloroquine is recommended. One tablet of hydroxychloroquine sulfate, USP 200 mg, is equivalent to 155 mg base. Lupus erythematosus Initially, the average adult dose is 400 mg =310 mg base once or twice daily. This may be continued for several weeks or months, depending on the response of the patient. PLAQUENIL hydroxychloroquine sulfate tablets contain 200 mg hydroxychloroquine sulfate, equivalent to 155 mg base, and are for oral administration. 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 sul tabs 200 mg Hydroxychloroquine Plaquenil Price Comparisons - Discounts, Cost., Hydroxychloroquine Sulfate Tablets, USP 200 mg* Side effects hydroxychloroquine plaquenilHydroxychloroquine methemoglobinemia Hydroxychloroquine dosing information. Usual Adult Dose for Malaria Treatment of the acute attack 800 mg 620 mg base followed in 6 to 8 hours by 400 mg 310 mg base, then 400 mg 310 mg base once a day for 2 consecutive days; alternatively, a single dose of 800 mg 620 mg base has also been effective Hydroxychloroquine Uses, Dosage & Side Effects -. PLAQUENIL® HYDROXYCHLOROQUINE SULFATE TABLETS, USP. Hydroxychloroquine Professional Patient Advice -. Hydroxychloroquine 200 mg Tablets Due to the national surge in health related Over-The-Counter ordering, certain OTC products are shipping slower than normal. We will continue to use fair share allocation of OTC product to combat shortages and strive to get orders out in a timely manner. 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. Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more.