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: Incidence not known Some side effects of hydroxychloroquine may occur that usually do not need medical attention. Hydroxychloroquine and live vaccines Chloroquine sulphate Chloroquine phosphate toxic to bacteria Hydroxychloroquine is a disease-modifying anti-rheumatic drug DMARD used for rheumatoid arthritis and lupus. Learn how long it takes, risks and side-effects. Hydroxychloroquine is a disease-modifying anti-rheumatic drug DMARD used for rheumatoid arthritis and lupus. Learn how long it takes, risks and side-effects. SIDE EFFECTS. The following adverse reactions have been identified during post-approval use of PLAQUENIL or other 4-aminoqunoline compounds. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Consumer information about the medication HYDROXYCHLOROQUINE - ORAL Plaquenil, includes side effects, drug interactions, recommended dosages, and storage information. Read more about the prescription drug HYDROXYCHLOROQUINE - ORAL. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. These side effects may go away during treatment as your body adjusts to the medicine. Hydroxychloroquine rare side effects Hydroxychloroquine - Wikipedia, Plaquenil Hydroxychloroquine Uses, Dosage, Side Effects. Para q sirve el hydroxychloroquine 200 mgFlying saucer sign oct plaquenil Side effects include irritability, headache, weakness, hair lightening or loss, stomach upset, nausea, dizziness, muscle pain, rash and itching. Rarely, hydroxychloroquine can affect the bone marrow leading to reduced white blood cells leukopenia or platelets thrombocytopenia and abnormal red blood cells anemia. Hydroxychloroquine Plaquenil Side Effects & Dosage for Malaria. HYDROXYCHLOROQUINE - ORAL Plaquenil side effects.. Hydroxychloroquine Side Effects -. Other rare side effects include changes in skin pigmentation and cardiomyopathy diseases of the heart muscle. The future Hydroxychloroquine was previously prescribed only for people whose lupus disease activity was mild in its course; if the lupus became active, steroids or immunosuppressants would be prescribed instead. Call your doctor immediately or get emergency medical help if you experience any of the following serious side effects Any vision problems, such as reading difficulties, sensitivity to light, seeing light flashes or streaks, blurred distance vision, or other issues Hearing problems. Serious side effects and their symptoms can include the following blurred vision or other vision changes. ringing in your ears or hearing loss. angioedema, or rapid swelling of your skin. hives. mild or severe bronchospasm that causes trouble breathing. sore throat. unusual bleeding or bruising.