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. Chloroquine pi3 kinase Chloroquine cholesterol Chloroquine diphosphate salt storage Hydroxychloroquine sulfate for lupus time usage If you are taking hydroxychloroquine for symptoms of rheumatoid arthritis, your symptoms should improve within 6 months. If your rheumatoid arthritis symptoms do not improve, or if they worsen, stop taking the drug and call your doctor. Once you and your doctor are sure the drug works for you. Chloroquine and hydroxychloroquine belong to the quinolone family. They are related drugs with similar clinical indications for use and similar manifestations of retinal toxicity, although their therapeutic and toxic doses differ. Hydroxychloroquine is a well tolerated medication for various rheumatologic and dermatologic conditions. Its main side effects are gastrointestinal upset, skin rash, headache, and ocular toxicity. Within the eye, hydroxychloroquine negatively impacts the cornea, ciliary body, and retina. 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. Symptoms of hydroxychloroquine toxicity Hydroxychloroquine Oral Uses, Side Effects, Interactions., Chloroquine and Hydroxychloroquine Toxicity Clinical. Plaquenil eye irregularity While side effects of corticosteroids are usually to blame, there is also the possibility of ocular damage associated with long-term use of the antimalarial drugs hydroxychloroquine brand name Plaquenil® and chloroquine. Protecting your eyesight when taking Plaquenil Lupus.. Hydroxychloroquine toxicity - EyeWiki. Hydroxychloroquine - Wikipedia. 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. Death is usually within 1 to 3 hours of ingestion and the cause is cardiac arrest. Drowsiness, dizziness, and visual disturbances can progress quickly to seizures, apnea, arrhythmias, and hypotension. Cardiotoxicity occurs in greater than 50% of cases. Hypotension from vasodilation and decreased cardiac output is frequently seen. Call a poison control center at once and then seek emergency medical attention if you think you have used too much of this medicine. An overdose of hydroxychloroquine can be fatal, especially in children. Take hydroxychloroquine for the full prescribed length of time for malaria. Your symptoms may improve before the infection is completely cleared.