Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Dose of hydroxychloroquine for ra Side effects of chloroquine The study is based on hydroxychloroquine sulfate and cobalamin the active ingredients of Plaquenil and Vitamin b12, respectively, and Plaquenil and Vitamin b12 the brand names. Other drugs that have the same active ingredients e.g. generic drugs are not considered. Aug 14, 2017 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. She says I have all signs of Fibro and that may actually be causing me more distress than the antibodies. Anyhow, I was researching to see if Plaquenil interferes with any vitamins or supplements since I take quite a few and read several articles on how Plaquenil depletes Vit D and Calcium. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Hydroxychloroquine is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Plaquenil and vitamins Hydroxychloroquine MedlinePlus Drug Information, Long-Term Side Effects of Plaquenil for Rheumatoid Arthritis. Difference between hydroxychloroquine and hydroxychloroquine sulfatePlaquenil and radiation therapy toxiciyPlaquenil and iplChloroquine for lung cancer Find patient medical information for Plaquenil Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Plaquenil Oral Uses, Side Effects, Interactions, Pictures, Warnings.. Immune & Autoimmune - Lupus Plaquenil Depletes Vit D.. Rx Side Effects New Plaquenil Guidelines and More - American.. Hydroxychloroquine 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. Does Plaquenil Interact with other Medications? Severe Interactions. These medications are not usually taken together. Consult your healthcare professional e.g. doctor or pharmacist for more in. 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.