This card is accepted at all major chain pharmacies, nationwide. Enter your name and email address to receive your free savings card. Plaquenil or methotrexate Best time to take plaquenil Does plaquenil cause weight loss or weight gain Plaquenil hydroxychloroquine belongs to a group of medicines called quinolines. 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. Usual Adult Dose for Malaria Prophylaxis. 500 mg chloroquine phosphate 300 mg base orally on the same day each week Comments -If possible, suppressive therapy should start 2 weeks prior to exposure; if unable to start 2 weeks before exposure, an initial loading dose of 1 g chloroquine phosphate. The recommended Plaquenil dosage for malaria prevention is 400 mg once weekly, starting two weeks before the anticipated exposure. The usual starting dosage for treating lupus is 400 mg once or twice a day, and the recommended starting dose for the treatment of rheumatoid arthritis is 400 to 600 mg daily. This card is accepted at all major chain pharmacies, nationwide. Site users seeking medical advice about their specific situation should consult with their own physician. Our free Discount Rx savings card can help you and your family save money on your prescriptions. This site does not dispense medical advice or advice of any kind. Usual dose of plaquenil Taking Plaquenil for Rheumatoid Arthritis, Chloroquine Dosage Guide with Precautions - The making of chloroquinePlaquenil calciumChloroquine psoriasis To treat malaria Hydroxychloroquine is usually given for 3 days, starting with one high dose followed by a smaller dose during the next 2 days in a row. Take this medicine for the full prescribed. Hydroxychloroquine - Side Effects, Dosage, Interactions - Drugs.. Plaquenil Dosage - eMedTV Health Information Brought To Life. Plaquenil Hydroxychloroquine Uses, Dosage, Side Effects.. 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. Rheumatoid Arthritis. The action of hydroxychloroquine is cumulative and may require weeks to months to achieve the maximum therapeutic effect see CLINICAL PHARMACOLOGY. Initial adult dosage 400 mg to 600 mg 310 to 465 mg base daily, administered as a single daily dose or in two divided doses. In a small percentage of patients, side effects may require temporary reduction of the initial. Give in 1–2 divided doses. Initially 400–600mg daily. May reduce by 50% to maintenance dose of 200–400mg daily. Max 600mg daily or 6.5mg/kg/day, whichever is less.