Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. Plaquenil dark skin Hydroxychloroquine anesthesia The more common side effects that can occur with hydroxychloroquine include headache. dizziness. diarrhea. stomach cramps. vomiting. Mar 17, 2019 Hydroxychloroquine is a quinoline medicine used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Aug 14, 2017 Long-Term Side Effects of Plaquenil for Rheumatoid Arthritis. Plaquenil is the brand name of hydroxychloroquine, a drug used to prevent or treat malaria. Plaquenil is also used for long-term treatment of autoimmune diseases such as rheumatoid arthritis RA and systemic lupus erythmatosis. Plaquenil is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. This medicine is not effective against all strains of malaria. Side effects of hydroxychloroquine medication HYDROXYCHLOROQUINE SULFATE Side Effects, Interactions & More., Hydroxychloroquine Uses, Dosage & Side Effects - Chloroquine high creatinine treatmentPlaquenil medication classHow does chloroquine kill the malaria parasiteWhere can i get hydroxychloroquine cheapestQuinacrine chloroquine antimalarial Jan 01, 2017 Call your doctor right away if you notice any of these side effects Wheezing or trouble breathing. Severe or bloody diarrhea. Blurred vision or eye problems. Skin rash or itching. Unexplained fever, unusual bleeding or bruising. If you notice these less serious side effects, talk with your doctor Headache. Nausea or upset stomach. Diarrhea. Appetite loss Hydroxychloroquine By mouth - National Library of Medicine.. Long-Term Side Effects of Plaquenil for Rheumatoid Arthritis.. Mint-Hydroxychloroquine - Uses, Side Effects, Interactions.. If you are taking hydroxychloroquine for symptoms of rheumatoid arthritis, your symptoms should improve within 6 months. If your rheumatoid arthritis symptoms do not improve, or if they worsen, stop taking the drug and call your doctor. Once you and your doctor are sure the drug works for you. 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. Hydroxychloroquine received an overall rating of 7 out of 10 stars from 368 reviews. See what others have said about Hydroxychloroquine, including the effectiveness, ease of use and side effects.