Hydroxychloroquine Tablet is commonly used to treat malaria, lupus, and rheumatoid arthritis. However, certain individuals should avoid taking this medication due to potential risks. Who Should Avoid Hydroxychloroquine: * People with Allergies: Those with a known allergy to hydroxychloroquine or chloroquine should not take this drug. * Patients with Pre-existing Conditions: Individuals with pre-existing heart conditions, such as arrhythmias or heart disease, are at risk of severe side effects, including heart rhythm disturbances. * Liver or Kidney Issues: Hydroxychloroquine can affect liver and kidney function, so those with liver or kidney disease should avoid it or use it with caution under close medical supervision. * Pregnant or Breastfeeding Women: The drug may have risks for the fetus or infant; alternatives should be considered and discussed with a healthcare provider. * Eye Conditions: Those with certain eye conditions, like retinopathy, may experience worsening symptoms. Always consult a healthcare professional before starting or discontinuing hydroxychloroquine to ensure it’s safe for your specific health needs.