Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. Plaquenil and watery eyes Macrobid and hydroxy chloroquine interactions Chloroquine hemozoin Hydroxychloroquine 20 mg Dosage for Plaquenil. The adult dose of Plaquenil to suppress malaria is 400 mg on the same day each week. The pediatric weekly suppressive dosage is 5 mg/kg of body weight. The adult dose of Plaquenil to treat an acute attack of malaria is an initial dose of 800 mg followed by 400 mg in six to eight hours and 400 mg for two more days. Plaquenil, widely used to treat lupus, rheumatoid arthritis and other inflammatory and dermatologic conditions, is very effective, and “the risk of toxicity in the first five years for someone without special risk factors is very low,” Dr. Marmor said. However, risk increases with duration of use. Hydroxychloroquine Plaquenil is a drug that is classified as an anti-malarial drug. Plaquenil is prescribed for the treatment or prevention of malaria. It is also prescribed for the treatment of rheumatoid arthritis, lupus, and the side effects of lupus such as hair loss, joint pain, and more. Plaquenil is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. This medicine is not effective against all strains of malaria. Plaquenil and edema Hydroxychloroquine-Induced Retinal Toxicity - American., Rx Side Effects New Plaquenil Guidelines and More - American. Chloroquine diphosphate salt solubilityAcute chloroquine poisoningPlaquenil for hivesSjogren's i can't tolerate plaquenil Seek immediate medical attention if any of these unlikely but very serious side effects occur sensitivity to light, vision changes e.g. blurred vision, seeing light flashes/streaks/halos, missing/blacked-out areas of vision, muscle your doctor immediately if any of these rare but very serious side effects occur severe stomach/abdominal pain, severe nausea/vomiting, easy bleeding/bruising, signs of infection e.g. fever, persistent sore throat, seizures, shortness of. HYDROXYCHLOROQUINE - ORAL Plaquenil side effects, medical.. Hydroxychloroquine Plaquenil Side Effects & Dosage for Malaria. Hydroxychloroquine Oral Route Side Effects - Mayo Clinic. Hydroxychloroquine Plaquenil is considered a disease-modifying anti-rheumatic drug DMARD. It can decrease the pain and swelling of arthritis. It may 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. 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. Myositis refers to any condition causing inflammation in muscles. Weakness, swelling, and pain are the most common myositis symptoms. Myositis causes include infection, injury, autoimmune conditions, and drug side effects.