Although survival rates have improved, over one half of patients with systemic lupus erythematosus have permanent damage in one or more organ systems. Arthritis and cutaneous manifestations are most common, but renal, hematologic and neurologic manifestations contribute largely to morbidity and mortality. Plaquenil for sun allergy Plaquenil and ranitidine 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. For treatment of acute attacks of malaria in adults, one dose is usually taken right away, followed by half the dose 6 to 8 hours later and then half the dose once a day for the next 2 days. For prevention and treatment of malaria in infants and children, the amount of chloroquine phosphate is based on the child's weight. By stopping or reducing flares, long-term use of antimalarial drugs helps slow or prevent lupus from damaging organs such as the kidneys and central nervous system. The antimalarials most often prescribed to people with lupus are Hydroxychloroquine Plaquenil® Chloroquine Aralen® Quinacrine Atabrine® 2-3 Systemic lupus erythematosus has fascinated physicians for almost a century and remains the prototypic autoimmune disease. Treatment approaches emphasize using a combination of drugs to minimize chronic exposure to corticosteroids. Aralen dosage for lupus Aralen chloroquine Malaria Drug Side Effects & Dosage, Chloroquine MedlinePlus Drug Information Hydroxychloroquine classification The dosage of chloroquine phosphate is often expressed in terms of equivalent chloroquine base. Each 500 mg tablet of ARALEN contains the equivalent of 300 mg chloroquine base. In infants and children the dosage is preferably calculated by body weight. Malaria. Suppression — Adult Dose 500 mg = 300 mg base on exactly the same day of each week. Aralen Chloroquine Uses, Dosage, Side Effects.. Antimalarials. Medications used to treat lupus Lupus Foundation of America. Aralen ar´ah-len trademark for a preparation of chloroquine, an antimalarial agent also used as a suppressant of lupus erythematosus. Aralen is used for the prevention and treatment of malaria, systemic lupus erythematosus, porphyria, amoebiasis. This drug is used as a part of the combination therapy of systemic lupus erythematosus, scleroderma, rheumatoid arthritis, and photodermatosis. Contraindications. Some patients with very severe cases of discoid lupus erythematosus may not respond adequately to the usual dosage of hydroxychloroquine, which is 400 mg per day for a normal-sized adult.