It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Malaria is spread by mosquitoes, which transmit the parasites that cause the infection, usually in tropical and subtropical parts of the world. Mthfr and plaquenil Plaquenil lungs Plaquenil is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Important information Taking Plaquenil long-term or at high doses may cause irreversible damage to the retina of your eye. The usual starting dose of Plaquenil is 200 mg twice a day or 400 mg once a day, administered orally, in people weighing 80 kg or more. The usual dosage works for most people who take Plaquenil, but it is possible to increase or decrease the dose based on individual needs. Plaquenil can cause serious side effects when used in high doses for chronic diseases such as RA over the long term. The New Zealand Dermatological Society recommends that to decrease the risk of retina damage, no more than 200mg of Plaquenil should be taken a day, and a dose of 400mg per day should be taken no longer than a few weeks. For example, it may be combined with an antibiotic to treat chronic Q-fever, which humans usually catch from farm animals or raw milk. Plaquenil is used to treat other types of infections too. Plaquenil dosage rheumatoid arthritis Hydroxychloroquine Side Effects, Dosage, Uses, and More, Taking Plaquenil for Rheumatoid Arthritis Chloroquine dnaPlaquenil blurry eyes from allergiesMosquitos and plaquenil Generally, hydroxychloroquine is given in 200 mg or 400 mg doses, once per day. Higher doses can sometimes be used, but only in adults and not for all cases. RA and Hydroxychloroquine How Effective is it for Rheumatoid Arthritis.. Long-Term Side Effects of Plaquenil for Rheumatoid Arthritis. Hydroxychloroquine Plaquenil - medications for Rheumatoid.. Plaquenil hydroxychloroquine is an effective medication for autoimmune conditions and malaria that comes with less side effects than other DMARDs. Upsides. Plaquenil hydroxychloroquine has been shown to improve physical function in up to 80% of patients with rheumatoid arthritis. Plaquenil Dosing for Rheumatoid Arthritis. The recommended starting Plaquenil dose for rheumatoid arthritis treatment is 400 to 600 mg daily. In some people, the starting dose may need to be temporarily reduced for a week or so if bothersome side effects occur. After a good response is obtained usually four to six weeks, your healthcare. An audit of 100 patients seen at any of nine Canadian rheumatology clinics during early 2016 showed that 30% of patients were not on appropriate weight-based hydroxychloroquine dosages, and 13% of patients on the drug had not received a baseline retinal assessment during their first year.