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 methemoglobinemia Hydroxychloroquine diagnostic studies Chloroquine death Hydroxychloroquine Oral tablet 200mg Drug Medication Dosage information. Learn about the reported side effects, related class drugs, and how these medications will affect your daily lifestyle. Visit for more details. Find treatment reviews for Hydroxychloroquine from other patients. Learn from their experiences about effectiveness, side effects and cost Dismiss this notification PatientsLikeMe would like to remind you that your browser is out of date and many features of the website may not function as expected. Hydroxychloroquine 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. 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. Hydroxy chloroquine 200 mg Hydroxychloroquine C18H26ClN3O - PubChem, Hydroxychloroquine uses & side-effects PatientsLikeMe Chloroquine diphosphate dmemHydroxychloroquine medication Hydroxychloroquine 200 mg Tablets Due to the national surge in health related Over-The-Counter ordering, certain OTC products are shipping slower than normal. We will continue to use fair share allocation of OTC product to combat shortages and strive to get orders out in a timely manner. Hydroxychloroquine 200 mg Tablets Generic Plaquenil. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Drug - Hydrobet 200mg - 10 Tablet Hydroxy-Chloroquine.. What Is Plaquenil? 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. Plaquenil is available in generic form. What Are Side Effects of Plaquenil? It is frequently sold as a sulfate salt known as hydroxychloroquine sulfate. 200 mg of the sulfate salt is equal to 155 mg of the base. Brand names of hydroxychloroquine include Plaquenil, Hydroquin, Axemal in India, Dolquine, Quensyl, Quinoric. References Hydroxychloroquine is in a class of drugs called antimalarials. It is used to prevent and treat acute attacks of malaria. It is also used to treat discoid or systemic lupus erythematosus and rheumatoid arthritis in patients whose symptoms have not improved with other treatments.