Please review the following URL and make sure that it is spelled correctly. Plaquenil (hydroxychloroquine) belongs to a group of medicines called quinolines. Easy bruising plaquenil Chloroquine retinopathy oct Plaquenil lyme Focus on Eyes Long-term Plaquenil intake can affect your vision. Taking high doses or long-term treatment of Plaquenil, an anti-malaria drug used to treat lupus, can lead to vision problems. Plaquenil is the brand name of hydroxychloroquine, a drug used to prevent or treat malaria 2. Plaquenil is also used for long-term treatment of autoimmune diseases such as rheumatoid arthritis RA and systemic lupus erythmatosis. According to the Mayo Clinic, it can take up to six months' constant use before an effect is seen in RA 1. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking hydroxychloroquine and call your. Do not take this medicine in larger. Malaria is common in areas such as Africa, South America, and Southern Asia. Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. How long does it take hydroxychloroquine to affectnyour eyea Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses, Long-Term Side Effects of Plaquenil for Rheumatoid. Chloroquine overdose side effectsWhat drug class is hydroxychloroquineChloroquine and proguanil breastfeedingHow does chloroquine phosphate work Plaquenil’s long half-life in the body can cause irreversible and progressive damage, Dr. Fung said. Similarly, one study reported that 16 women who’d taken hydroxychloroquine or chloroquine, or a combination of the agents, showed no improvement seven years after stopping drug therapy, and progression occurred in six of the cases. 2 Rx Side Effects New Plaquenil Guidelines and More - American.. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Hydroxychloroquine Oral Route Side Effects - Mayo Clinic. To be at risk of eye problems from Plaquenil you need to be on quite a high dose. The dose that you can safely tolerate depends on your size. If you weigh less than 30kg 66 lbs, then you may run in to problems on just one tablet a day. If you weigh less than 60kg around 9 ½ stone, 132 lbs then you may be at risk of eye problems on two tablets. That you will need to take hydroxychloroquine for at least five years. Because of this you will be invited to take part in the screening programme. Where will the screening take place? You will receive an eye assessment appointment at your local hospital eye department within 12 months of when you started taking hydroxychloroquine. Hydroxychloroquine may cause some people to be agitated, irritable, or display other abnormal behaviors. It may also cause some people to have suicidal thoughts and tendencies, or to become more depressed. If you or your caregiver notice any of these side effects, tell your doctor right away. This medicine may cause hypoglycemia low blood sugar.