Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Plaquenil qt prolongation Pharmacological classification of hydroxychloroquine The adult dose of Plaquenil to treat an acute attack of malaria is an initial dose of 800 mg followed by 400 mg in six to eight hours and 400 mg for two more days. To treat lupus erythematosus, the average adult dose is 400 mg once or twice daily. What Drugs, Substances, or Supplements Interact with Plaquenil? Hydroxychloroquine is in a class of drugs called antimalarials. It is used to prevent and treat acute attacks of malaria. It is also used to treat discoid or systemic lupus erythematosus and rheumatoid arthritis in patients whose symptoms have not improved with other treatments. Summary Drug interactions are reported among people who take Plaquenil and Vitamin d together. This study is created by eHealthMe based on reports of 2,536 people who take Plaquenil and Vitamin d from Food and Drug Administration FDA, and is updated regularly. 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 Vitamins with plaquenil and pred. DailyStrength, Hydroxychloroquine MedlinePlus Drug Information Dosage of chloroquine syrup for childrenCan plaquenil cause bad teeth 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. Long-Term Side Effects of Plaquenil for Rheumatoid Arthritis.. Plaquenil and Vitamin d drug interactions - eHealthMe. Hydroxychloroquine Plaquenil and Hair Loss Is my Plaquenil.. Hydroxychloroquine is a quinoline medicine 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. My rheumy told me that the hair loss could be from the plaquenil or lupus before telling me to take vitamin b. I knew I was already on a lot of vitamins so I talked to my PCP who put me on them, and I was told not to take anymore than the two multivitamins because one is a prescription iron/ multivitamin combination with a lot of vitamins. Legitimate looking vitamins I take to help remediate it I took Plaquenil for over 13 years and it caused me and 6 in every 1000 patients, new research shows to have toxic maculopathy it caused.