Please review the following URL and make sure that it is spelled correctly. Plaquenil (hydroxychloroquine) belongs to a group of medicines called quinolines. How soon does hydroxychloroquine work Hydroxychloroquine sulfate usp 200 mg 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. Hydroxychloroquine is a DMARD. The brand name is Plaquenil. What does Plaquenil do? Plaquenil relieves pain and swelling and prevents damage to joints. How long does Plaquenil take to work? Plaquenil works very slowly. In 1 to 3 months you should start to feel better. You may continue to get better for up to 1 year. Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine 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 Hydroxychloroquine toxicity - EyeWiki, Lupus Medicines Hydroxychloroquine - Brigham and Women's. Can taking plaquenil increase chances of getting sick Does anyone take Hydroxychloroquine, and do you feel the benefits of it. that has all settled now as long as I take it with food. Good luck and if you experience any side effects then this site is the place to look. it does affect your eye sight so l have a test every year for that, l am also on Myfenax as well, with both of these l can. Does anyone take Hydroxychloroquine, and do you f.. Hydroxychloroquine Side Effects Common, Severe, Long Term.. Focus on Eyes Long-term Plaquenil intake can affect your vision. 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 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. Taking Plaquenil long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking Plaquenil and call your doctor at once if you have trouble focusing, if you see light streaks or flashes in your vision, or if you notice any swelling or color changes in your eyes.