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. Is plaquenil a nsaids Citalopram and hydroxychloroquine The molecular weight of hydroxychloroquine sulfate is 433.95, and molecular formula is C 18 H 26 ClN 3 O. H 2 SO 4. PLAQUENIL hydroxychloroquine sulfate tablets contain 200 mg hydroxychloroquine sulfate, equivalent to 155 mg base, and are for oral administration. Detailed Hydroxychloroquine dosage information for adults and children. Includes dosages for Rheumatoid Arthritis, Systemic Lupus Erythematosus, Malaria Prophylaxis and more; plus renal, liver and dialysis adjustments. Alternate dosing based on body weight A total dose representing 25 mg/kg is administered in 3 days, as follows First dose. Plaquenil Dosage Malaria. Adults 400 mg 310 mg base once weekly on the same day of each week starting 2 weeks prior. Lupus Erythematosus. The recommended adult dosage is 200 to 400 mg 155 to 310 mg base daily. Rheumatoid Arthritis. The action of hydroxychloroquine is cumulative and may. 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. Plaquenil dosage based on weight Daily Plaquenil Dosage - Crunching Numbers —, Hydroxychloroquine Dosage Guide with Precautions - Chloroquine intercalating Plaquenil caused some weight loss for me when I was on a higher dose. Now that I am on 200 mg. per day, I don't notice that anymore. Prednisone, on the other hand, has caused both a gain/loss, depending on the dosage. Plaquenil & Weight Gain/Loss -. Plaquenil Dosage Guide -. Hydroxychloroquine Plaquenil Dosing Calculator - MDCalc. The usual hydroxychloroquine dose that is prescribed is 400 mg/day. For this dosage, any woman with an ideal body weight less than 135 pounds would be in the toxic dose range. As one can see, the height that corresponds to an ideal body weight of 135 pounds varies across the formulas. How to use Plaquenil. Hydroxychloroquine is usually taken with food or milk to prevent stomach upset. The dosage and length of treatment are based on your medical condition and response to therapy. However, dose is usually not more than 800 mg for the first dose and not more than 400 mg for the next doses. Children—Dose is based on body weight and must be determined by your doctor. At first, 13 mg per kg of body weight taken as a single dose. Then, 6.5 mg per kg of body weight taken 6 hours, 24 hours, and 48 hours after the first dose.