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. Chloroquine used for skin lupus Plaquenil fever Plaquenil for atopic dermatitis Plasmodium vivax trophozoites insensitive to chloroquine Plaquenil hydroxychloroquine is in a class of drugs called disease-modifying anti-rheumatic drugs, which are used to decrease inflammation, pain and joint damage. While today it is used to treat autoimmune conditions, such as rheumatoid arthritis and lupus, it was originally used as an anti-malaria drug. Although they are uncommon, Plaquenil has side effects that may affect your eyes. The rheumy suggested trying the Brand name, instead of generic. That did the trick. No problems whatsoever with that. It takes weeks to months before you will feel the full effect of the drug. Also - regular eye exams are important while taking Plaquenil - either yearly or twice yearly. 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. It's important to watch for possible side effects and toxicity. 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. What exams do i need to take while taking hydroxychloroquine Hydroxychloroquine Side-effects, uses, time to work, Plaquenil - Prescribing information and chloroquine Nov 09, 2018 While using hydroxychloroquine, you may need frequent blood tests and vision exams. Store at room temperature away from moisture, heat, and light. Seek emergency medical attention or call the. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Taking Plaquenil for Rheumatoid Arthritis. Medicines for the Prevention of Malaria While Traveling.. Plaquenil can damage the retina of the eye. This can lead to blindness. This problem is most common when high doses are taken for a long time. If you will be taking Plaquenil for a while, it is recommended to have a thorough eye exam before starting it and every three months while taking it. Blood tests for monitoring of methtrexate consist of CBC and platelet count as well as liver function tests to keep track of potential liver and bone marrow damage. The tests can be done every 3 to 6 months or as needed as determined by any symptoms. Plaquenil hydroxychloroquine rarely causes blood problems but an annual eye exam is important. Take it once weekly while in the area, and continue taking it for 4 to 8 weeks after leaving the area or as directed by your doctor. take hydroxychloroquine at least 4 hours before or after.