This medicine is also sometimes given off-label to help the following conditions: Also, let your doctor know if you drink large amounts of alcohol before starting on this medicine. Your doctor will probably want to order frequent tests to check your body's response to chloroquine. Plaquenil withdrawal headache Plaquenil for spondyloarthritis Oct 01, 2018 The dosage of Chloroquine phosphate is often expressed in terms of equivalent Chloroquine base. Each 500 mg tablet of Chloroquine phosphate contains the equivalent of 300 mg Chloroquine base. In infants and children the dosage is preferably calculated by body weight. Malaria treatment oral To treat malaria in adults, one dose of oral chloroquine is usually given right away. Then, half the dose is taken six to eight hours later. This is typically followed by half the dose once a day for the next two days. Amebiasis treatment oral To treat amebiasis in adults. 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. Let your healthcare provider know if your symptoms either don't improve or worsen while taking this medicine. Keep all appointments with your doctor and laboratory. Chloroquine base dose Chloroquine Oral Route Proper Use - Mayo Clinic, Chloroquine Aralen - Side Effects, Dosage, Interactions - Drugs Can plaquenil cause early menopauseHydroxychloroquine side effects diarrheaPlaquenil toxicity monitored withPlaquenil for psoriatic arthritis For treatment of amebiasis, one dose is usually taken for 2 days and then half the dose every day for 2 to 3 weeks. It is usually taken in combination with other amebicides. Chloroquine phosphate may cause an upset stomach. Chloroquine MedlinePlus Drug Information. Aralen Chloroquine Uses, Dosage, Side Effects, Interactions, Warning. Chloroquine phosphate REEF2REEF Saltwater and Reef.. Adults 1 g 600-mg base daily for 2 days, then 500 mg 300-mg base daily for 2 to 3 weeks or 4 to 5 ml 160- to 200-mg base I. M. for 10 to 12 days; change to P. O. as soon as possible. Administer with an intestinal amebicide. Rheumatoid arthritis. Adults 250 mg P. O. daily chloroquine phosphate with evening meal. Chloroquine dose for the treatment of uncomplicated Malaria 1000 mg 600 mg base on day 1, followed by 500 mg 300 mg base at 6, 24, and 48 hours after the first dose. Concomitant therapy with primaquine in patients with chloroquine-sensitive P.vivax and P.ovale is necessary. The dosage of chloroquine phosphate is often expressed in terms of equivalent chloroquine base. Each 250 mg tablet of chloroquine phosphate is equivalent to 150 mg base and each 500 mg tablet of chloroquine phosphate is equivalent to 300 mg base. In infants and children the dosage is preferably calculated by body weight.