Hypersensitivity reaction to Hydroxychloroquine Already taking Chloroquine or Hydroxychloroquine Cardiac Arrhythmia Already taking drugs that prolong QT Decreased renal function in stages 4 and 5.(GFR <30) The history of enzymatic disorders caused by some drugs that result in red blood cell lysis (G6PD). The history of Retinopathy Pregnancy

Hypersensitivity reaction to Hydroxychloroquine Already taking Chloroquine or Hydroxychloroquine Cardiac Arrhythmia Already taking drugs that prolong QT Decreased renal function in stages 4 and 5.(GFR <30) The history of enzymatic disorders caused by some drugs that result in red blood cell lysis (G6PD). The history of Retinopathy Pregnancy