Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Other options for hydroxychloroquine plaquenil Hydroxychloroquine hcq Chloroquine mechanism Plaquenil effects menstrual cycle Hydroxychloroquine SULFATE Side Effects by Likelihood and Severity INFREQUENT side effects. If experienced, these tend to have a Severe expression. drug interactions or adverse effects, nor. In this review, we analyze Hydroxychloroquine sulfate side effects by the time on the drug, gender and age of the people who have side effects while taking Hydroxychloroquine sulfate. The review is based on 11,814 people who have side effects while taking the drug from Food and Drug Administration FDA. For treatment of acute attacks of malaria in adults, four tablets are usually taken right away, followed by two tablets 6 to 8 hours later and then two tablets on each of the next 2 days. For prevention or treatment of malaria in infants and children, the amount of hydroxychloroquine is based on the child's weight. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Hydroxychloroquine is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Hydroxychloroquine sulphate tablets side effects Plaquenil Hydroxychloroquine Side effects, Images, Uses., Common Hydroxychloroquine sulfate side effects a study from. Substitutes for plaquenilPlaquenil toxicity heartWhat class of medication is plaquenilPlaquenil 400 mg once a day 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 Side-effects, uses, time to work. Hydroxychloroquine MedlinePlus Drug Information. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. 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. Side Effects. Drug information provided by IBM Micromedex Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. One of the most serious side effects is a toxicity in the eye generally with chronic use. People taking 400 mg of hydroxychloroquine or less per day generally have a negligible risk of macular toxicity, whereas the risk begins to go up when a person takes the medication over 5 years or has a cumulative dose of more than 1000 grams.