Plaquenil retinal toxicity dosage

Discussion in 'Canada Pharmacy' started by Challenger, 21-Feb-2020.

  1. LuxHosting New Member

    Plaquenil retinal toxicity dosage


    Pattern of Retinopathy: Although the locus of toxic damage is parafoveal in many eyes, Asian patients often show an extramacular pattern of damage. Dose: We recommend a maximum daily HCQ use of 5.0 mg/kg real weight, which correlates better with risk than ideal weight.

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    Although the incidence of macular toxicity is infrequent with Plaquenil use at a dosage of 200mg or 400mg q.d. its visual impact can be devastating. 2,3 The associated classic retinal toxicity is described as a bull’s eye maculopathy ring of depigmented retinal pigment epithelium that spares the foveal area. Aug 01, 2009 I just went to Winston-Salem to see a retinal specialist and am waiting for his reply--he did say it looked suspicious for toxicity. I just read an article by a lady who has experienced the same visual disturbances and was diagnosed with toxicity and has been off plaquenil 2 years but her eyes are still getting worse. Plaquenil side effects Get emergency medical help if you have signs of an allergic reaction to Plaquenil hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Taking Plaquenil long-term or at high doses may cause irreversible damage to the retina of your eye.

    Risk of Toxicity: The risk of toxicity is dependent on daily dose and duration of use. There are no similar demographic data for CQ, but dose comparisons in older literature suggest using 2.3 mg/kg real weight.

    Plaquenil retinal toxicity dosage

    Plaquenil - FDA prescribing information, side effects and uses, Has anyone experienced plaquenil toxicity with damage to eyes?

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  6. The risk of a toxicity sharply increases after 5 years, with majority of cases of retinotoxicity occurring in patients that have had a cumulative dose exceeding 1000g of hydroxychloriquine Plaquenil. This level is reached in about 7 years with the most common daily dose of Plaquenil, 400 mg/day 200 bid.

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    Chloroquine and hydroxychloroquine both belong to the quinolone family and share similar clinical indications and side effects, including retinal toxicity. Chloroquine-induced retinal toxicity was first described in 1959 and the retinal toxic effects of hydroxychloroquine were later described in 1967 3, 4. One reaches a cumulative dose of 1000 grams 1 kilogram at 7 years when taking the most commonly prescribed dose of 400 mg a day. A new study then focused on those patients that had taken HCQ over 5 years. This study revealed a much higher overall risk of 7.5% retinal toxicity among the 2361 patients studied. Hydroxychloroquine retinopathy is most influenced by daily dose and duration of use. Risk for toxicity is less with 5.0 mg/kg real weight/day for hydroxychloroquine and 2.3 mg/kg real weight/day for chloroquine. Patients are at low risk during the first 5 years of treatment.

     
  7. Evgeniy T. New Member

    Plaquenil is the brand name for the prescription drug hydroxychloroquine. Hydroxychloroquine Plaquenil Update--TB therapy and plaquenil Antirheumatic Drugs and the Risk of Tuberculosis.
     
  8. ajj.rudnina Well-Known Member

    Applies to chloroquine: oral tablet Along with its needed effects, chloroquine may cause some unwanted effects. Sickle Cell Patients Suffer As Disparities In Care And. Chloroquine Side Effects Common, Severe, Long Term. Anesthetic management of a patient with sickle cell.
     
  9. rider User

    Chloroquine Oral Uses, Side Effects, Interactions. Uses Chloroquine is used to prevent or treat malaria caused by mosquito bites in countries where malaria is common. Malaria parasites can enter the body through these mosquito bites, and then live.

    Chloroquine - FDA prescribing information, side effects and uses