Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take Plaquenil (hydroxychloroquine) with all of your drugs and health problems. Can i take aleve with plaquenil Chloroquine classification Pics of corneal chloroquine toxicity Blurred vision or other vision changes chest discomfort, pain, or tightness cough or hoarseness dark urine decreased urination defective color vision diarrhea difficulty breathing difficulty seeing at night dizziness or fainting fast, pounding, uneven heartbeat feeling that others are watching you or controlling your behavior 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. Common side effects linked with hydroxychloroquine use include nausea, loss of appetite, and headache. Nausea, blurred vision, and vomiting are common side effects of chloroquine use. More serious side effects associated with using hydroxychloroquine and chloroquine include fast heartbeat, ringing in the ears, vision changes, and muscle weakness. For all uses of Plaquenil (hydroxychloroquine): WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Do not start, stop, or change the dose of any drug without checking with your doctor. Hydroxychloroquine blurry vision Determine risk for hydroxychloroquine retinal toxicity., Hydroxychloroquine Oral Route Precautions - Mayo Clinic Buy chloroquine phosphate The drops will make your vision blurry for a few hours or longer in some people. You may also be more sensitive to light. You should not drive for several hours after having your eyes dilated and you will probably need someone with you at the appointment. 6 7 Macular Society Eye screening for patients taking hydroxychloroquine Eye screening for patients taking hydroxychloroquine.. What Is the Difference between Hydroxychloroquine and.. Protecting your eyesight when taking Plaquenil Lupus.. Hydroxychloroquine can cause • skin rashes, especially those made worse by sunlight • feeling sick nausea or indigestion • diarrhoea • headaches • bleaching of the hair or mild hair loss • ringing in the ears tinnitus • blurred vision. There is a small risk that hydroxychloroquine may damage the retina part of the Plaquenil hydroxychloroquine is an antimalarial medication used to treat or prevent malaria, a disease caused by parasites, which enter the body through the bite of a mosquito. Plaquenil is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. If you are taking hydroxychloroquine for a long period of time, your doctor will recommend frequent eye exams. It is very important that you keep these appointments. Hydroxychloroquine can cause serious vision problems. If you experience any changes in vision, stop taking hydroxychloroquine and call your doctor immediately.