In Sjögren’s, Plaquenil is used to treat many symptoms of Sjögren’s including fatigue, joint symptoms of arthritis and arthralgias (joint pain), dry mouth and dry eyes. Similar to its use in systemic lupus erythematosus, many clinicians feel that it is useful in reducing general Sjögren’s “disease activity.” One of the reasons that physicians feel comfortable in prescribing Plaquenil is its low risk to benefit ratio. Chloroquine phosphate for uronema marinum treatment Chloroquine hcl Synthroid with plaquenil Plaquenil and topamax The risk of developing retinal toxicity has been found to be dependent on the daily HCQ dose and the duration of use. The risk of retinal toxicity is 1% for those who use HCQ for up to 5 years and 2% for those who use HCQ for 5–10 years, but it rises to almost 20% after 20 years of HCQ use. The prevalence of retinal toxicity was 36.2% among patients who used ≤200 mg HCQ per day and 8.3% among those who used 200 mg HCQ per day, and there was no significant association between daily HCQ dose and retinal toxicity P = 0.062. The American Academy of Ophthalmology has published several dosing and screening recommendations for hydroxychloroquine to avoid potential retinal toxicity, yet some patients still experience permanent vision loss resulting from hydroxychloroquine retinopathy due to improper dosing of the drug and improper screening. As with any medication, allergic reactions including skin rashes and non-allergic reactions can occur. This means that the side effects of Plaquenil are mild and infrequent compared with its potential benefits. Retinal toxicity of hydroxychloroquine Ocular Disease Monitoring Critical to Avoid Retinal Toxicity from., Retinal Toxicity in Patients Treated With. Hydroxychloroquine eyeIs plaquenil addictiveMethod of action of chloroquineQuinine and chloroquine Chloroquine-induced retinal toxicity was first described in 1959 and the retinal toxic effects of hydroxychloroquine were later described in 1967 3, 4. Hydroxychloroquine has significantly less retinal toxicity and has largely replaced chloroquine as a treatment of inflammatory disease. Hydroxychloroquine Plaquenil Toxicity and.. Despite Plaquenil dosing recommendations, retinal toxicity.. Retinal Screening for Hydroxychloroquine Plaquenil Toxicity Retina.. Diagnosis Hydroxychloroquine-induced retinal toxicity Discussion. Chloroquine CQ and hydroxychloroquine Plaquenil HCQ have been used for many years, initially for the treatment of malaria but now more commonly for the treatment of inflammatory diseases such as rheumatoid arthritis and lupus 1. Hydroxychloroquine-Induced Retinal Toxicity Symptoms and Signs. Patients in earlier stages of hydroxychloroquine retinal toxicity usually do not. Mechanism of Toxicity. The mechanism of hydroxychloroquine retinal toxicity has yet. Medication Dosage. Several factors have been associated with. PURPOSE To define the risk of hydroxychloroquine HCQ-related retinal toxicity in patients with rheumatoid arthritis RA and systemic lupus erythematosus SLE who are receiving recommended dosages of the drug or =6.5 mg/kg/day.