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. Plaquenil nausea vomiting Plaquenil and tongue swell Chloroquine phosphate tablet ip 250 mg Chloroquine p falciprum Chloroquine has been replaced with hydroxychloroquine as it has less side effects. Eye Exam Before Starting Treatment. If a person is going to be treated long-term with Plaquenil, they need to have a thorough dilated eye exam with best corrected visual acuity, central visual field, color vision, and dilated examination of the retina. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking hydroxychloroquine 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. What is Plaquenil? Plaquenil is a drug used in the acute treatment of malaria. It is also used in the long –term treatment of rheumatoid arthritis and lupus erythematosus. Its generic name is hydroxychloroquine sulfate. Chloroquine has been replaced with hydroxychloroquine as it has less side effects. Eye Exam Before Starting Treatment 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. What are the side effects of the drug hydroxychloroquine Plaquenil Indications, Side Effects, Warnings -, Plaquenil, Plaquenil Sulfate, Quineprox hydroxychloroquine. Chloroquine peak plasma concentraion In rare cases, hydroxychloroquine Plaquenil can have side effects that affect the eyes, so people who take this medicine should see an ophthalmologist at least once a year. What are the side effects of hydroxychloroquine and.. Plaquenil Hydroxychloroquine Side Effects and Adverse Reactions. Hydroxychloroquine Sulfate Bulk Uses, Side Effects.. Mar 17, 2019 Common hydroxychloroquine side effects may include headache, dizziness, ringing in your ears; nausea, vomiting, stomach pain; loss of appetite, weight loss; mood changes, feeling nervous or irritable; skin rash or itching; or. hair loss. Feb 19, 2020 Malaria. PLAQUENIL is indicated for the treatment of uncomplicated malaria due to P. falciparum, P. malariae, P. ovale, and P. vivax. PLAQUENIL is indicated for the prophylaxis of malaria in geographic areas where chloroquine resistance is not reported. 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.