Additionally, another exception occurred while executing the custom error page for the first exception. Plaquenil (hydroxychloroquine) belongs to a group of medicines called quinolines. Hydroxychloroquine pigmentation How quickly does plaquenil work Although it is considered rare, retinal toxicity from the intake of Plaquenil can be irreversible even if the drug is discontinued 2, 3. What is Plaquenil Toxicity? The toxicity resulting from the intake of Plaquenil is due to its affinity for melanin-containing structures in the body. Many systemic medications may cause retinal toxicity. One such commonly used medication for dermatologic and rheumatologic inflammatory conditions is hydroxychloroquine Plaquenil, a chloroquine derivative. It is used to treat many diseases including malaria, rheumatoid arthritis and systemic lupus erythematosus. Plaquenil is sometimes given only once per week. Choose the same day each week to take this medicine if you are on a weekly dosing schedule. Take Plaquenil with a meal or a glass of milk. To prevent malaria Start taking Plaquenil 2 weeks before entering an area where malaria is common. Continue taking the medicine regularly during your stay. Malaria is common in areas such as Africa, South America, and Southern Asia. Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Is plaquenil toxic Plaquenil-Induced Toxic Maculopathy - Decision-Maker PLUS, Hydroxychloroquine-Induced Retinal Toxicity - American Academy of. Plaquenil annual eye examPlaquenil and knee replacementZentiva hydroxychloroquine Chloroquine and hydroxychloroquine belong to the quinolone family. Although their therapeutic and toxic doses differ, they are related drugs with similar clinical indications for use and similar manifestations of retinal toxicity. Initially, chloroquine was given for malaria prophylaxis and treatment. Chloroquine and Hydroxychloroquine Toxicity Practice.. Plaquenil Uses, Dosage & Side Effects -. Dr. Noskow's Case Report Plaquenil Toxicity - Hollywood Eye.. Plaquenil hydroxychloroquine is an antimalarial medication used to treat or prevent malaria, a disease caused by parasites, which enter the body through the bite of a mosquito. Plaquenil is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Discussion. A risk factor for Plaquenil hydroxychloroquine retinotoxicity is a daily dose that exceeds 5.0 mg of drug per kg of body weight. The tool on the right simply calculates this threshold based on a patient’s real body weight. It’s important to understand that the daily dose is only one risk factor for plaquenil retinotoxicity. Once retinal toxicity from hydroxychloroquine occurs, it is thought that the retinal changes are permanent and the disease can progress even if hydroxychloroquine is stopped for 1 to 3 years. Newer techniques for evaluation of retinal disease have been developed and these techniques can detect retinal toxicity earlier.