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. Hydroxychloroquine sulphate weight gain Chloroquine 500mg tab 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. In children, dosage is also based on weight. Plaquenil, widely used to treat lupus, rheumatoid arthritis and other inflammatory and dermatologic conditions, is very effective, and “the risk of toxicity in the first five years for someone without special risk factors is very low,” Dr. Marmor said. However, risk increases with duration of use. The molecular weight of hydroxychloroquine sulfate is 433.95, and molecular formula is C 18 H 26 ClN 3 O. H 2 SO 4. Plaquenil hydroxychloroquine sulfate tablets contain 200 mg hydroxychloroquine sulfate, equivalent to 155 mg base, and are for oral administration. Inactive Ingredients Dibasic calcium phosphate USP. 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. Does plaquenil cause blindness Blindness From Plaquenil - Scleroderma - Inspire, Rx Side Effects New Plaquenil Guidelines and More - American. Plaquenil causing lyme herxingNew guidelines for plaquenil macuopathy 2018Plaquenil anxiety depression Plaquenil is the brand name for the prescription drug hydroxychloroquine. 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. Plaquenil Hydroxychloroquine - Side Effects, Dosage, Interactions - Drugs. Plaquenil - FDA prescribing information, side effects and uses. Plaquenil Hydroxychloroquine - Side Effects, Dosage.. If you experience stomach upset while taking generic hydroxychloroquine, ask your doctor about trying name-brand Plaquenil instead. While these medications contain the same active ingredient, the preparation of generic hydroxychloroquine can sometimes cause stomach irritation that usually does not occur with the brand name Plaquenil. Plaquenil and Blindness - from FDA reports Summary Blindness is found among people who take Plaquenil, especially for people who are female, 60+ old, have been taking the drug for 1 - 2 years, also take medication Humira, and have Pain. Hydroxychloroquine Plaquenil and chloroquine cause ocular toxicity, including the cornea, ciliary body, and retina. Chloroquine can cause cataract; however, no reports of hydroxychloroquine and cataract have been reported. This article focuses upon hydroxychloroquine retinopathy.