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. Chloroquine tablet brand name Can erythromycin interact with plaquenil Tell your doctor if any of the following side effects, as they may be indications of a more serious reaction Headache. Loss of appetite. Dizziness. Nausea. Diarrhea, vomiting, or stomach pain. Skin rash. Common side effects include allergy to the medication, GI disturbances such as nausea or diarrhea, and changes of pigmentation in the skin or hair this is not a complete list. You should also be tested for an enzyme called g6pd before starting, and you should have at least one eye exam annually while on the drug. The most common side effects are nausea and diarrhea, which often improve with time. Less common side effects include rash, changes in skin pigment such as darkening or dark spots, hair changes, and muscle weakness. Rarely, hydroxychloroquine can lead to anemia in some individuals. 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. Most common side effects of plaquenil Taking Plaquenil for Rheumatoid Arthritis, What are the common side effects of plaquenil. Is depression a side effect of plaquenilPlaquenil retina One of the reasons that physicians feel comfortable in prescribing Plaquenil is its low risk to benefit ratio. This means that the side effects of Plaquenil are mild and infrequent compared with its potential benefits. As with any medication, allergic reactions including skin rashes and non-allergic reactions can occur. The Risk of Retinal Toxicity with Plaquenil. Hydroxychloroquine Plaquenil. Plaquenil What You Need to Know - Kaleidoscope Fighting Lupus. RARE side effects. If experienced, these tend to have a Severe expression. Abnormal Liver Function Tests. Acute Liver Failure. Acute Pustular Eruptions On Skin. Bronchospasm. Decreased Blood Platelets. Decreased White Blood Cells. HYDROXYCHLOROQUINE is used to treat rheumatoid arthritis and systemic lupus erythematosus. It is also used to treat malaria. The lowest GoodRx price for the most common version of generic Plaquenil is around $18.60, 90% off the average retail price of $196.17. Common Plaquenil side effects - a study from FDA data Summary In this review, we analyze Plaquenil side effects by the time on the drug, gender and age of the people who have side effects while taking Plaquenil.