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. Blood clots during period with plaquenil Best price for plaquenil Our Plaquenil hydroxychloroquine Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication. This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil may cause some unwanted effects. 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 Medical treatment suggested by medical practitioners for persons with lupus includes plaquenil which is a 200 mg. tablet that gives numerous side effects such as nausea, hair bleaching, blurred vision, irreversible retinopathy, loss of hair and pruritus. 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. Lupus medication plaquenil side effects The Risk of Retinal Toxicity with Plaquenil, Plaquenil Side Effects Common, Severe, Long Term - Why is the drug hydroxychloroquineEvaluation while on hydroxychloroquine Other medications and supplements may interfere with your lupus medication or cause you to experience side effects. Depending on the medications you are taking to treat your lupus, you may need to undergo routine tests such as eye tests or blood tests to ensure that your medications aren’t causing any side effects. Lupus and medication - Better Health Channel. Effects of Lupus Systemic Lupus. Hydroxychloroquine MedlinePlus Drug Information. Find patient medical information for Plaquenil Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Avoid coadministration of hydroxychloroquine and doxorubicin if possible. If not possible, closely monitor for increased side effects of doxorubicin including myelosuppression and cardiotoxicity. Dronedarone Severe Dronedarone administration is associated with a dose-related increase in the QTc interval. The increase in QTc is approximately 10 milliseconds at doses of 400 mg twice daily the FDA-approved dose and up to 25 milliseconds at doses of 1600 mg twice daily. The Rheumatologist put me on Plaquenil. I started with just one pill per day because I sometimes have side effects from new drugs. After just 4 days on Plaquenil, I had severe stomach cramps, no appetite, GERD pain, diarrhea and a migraine.