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. Plaquenil usage and autism Can you donate blood if you are on plaquenil Hydroxychloroquine HCQ, sold under the brand name Plaquenil among others, is a medication used for the prevention and treatment of certain types of malaria. Specifically it is used for chloroquine-sensitive malaria. Other uses include treatment of rheumatoid arthritis, lupus, and porphyria cutanea tarda. It is taken by mouth. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking hydroxychloroquine and call your doctor at once if you have trouble focusing, if you see light streaks or flashes in your vision, or if you notice any swelling or color changes in your eyes. What is the dosage for hydroxychloroquine Plaquenil? The usual adult dose for treating malaria is 800 mg initially, followed by 400 mg 6-8 hours later and then 400 mg at 24 hours and 48 hours. The dose for malaria prevention is 400 mg every week starting 1 or 2 weeks before exposure and for 4 weeks after leaving the high risk area. 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. Taking hydroxychloroquine Hydroxychloroquine Reviews Everyday Health, Plaquenil Hydroxychloroquine Side effects, Images, Uses, Dosage. Chloroquine for malaria in pregnancyOptometrist letter to primary care physician plaquenilSide effects of hydroxychloroquine sulfate 200 mg tablets Nov 09, 2018 Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking hydroxychloroquine and call your doctor at once if you have trouble. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Hydroxychloroquine Plaquenil Side Effects & Dosage for.. Hydroxychloroquine Side Effects Common, Severe, Long Term.. Plaquenil hydroxychloroquine for Rheumatoid Arthritis "I take it for Rheumatoid Arthritis, it has been good for me, but the generic form of it caused me problems, so I have to take the brand name. The brand name is extremely expensive and I cannot afford it. Hydroxychloroquine may react with other. medicines. Tell your doctor, nurse or pharmacist if you are taking any other medicines, including those bought in the supermarket and any supplements or natural health products. Your doctor or pharmacist will check if the products are OK to take with hydroxychloroquine. Hydroxychloroquine comes in an oral tablet. Adult dosing ranges from 200 mg or 400 mg per day 6.5mg/kg. In some cases, higher doses can be used. It is recommended one tablet twice daily if taking more than one tablet. It is recommended to be taken with food.