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. Oct hydroxychloroquine retinopathy Can plaquenil cause psoriasis Drug of choice for chloroquine resistant malaria Hypoglycemia PLAQUENIL has been shown to cause severe hypoglycemia including loss of consciousness that could be life threatening in patients treated with or without antidiabetic medications see DRUG INTERACTIONS and ADVERSE REACTIONS. Patients treated with PLAQUENIL should be warned about the risk of hypoglycemia and the associated clinical Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Mar 25, 2015 I can take brand name Plaquenil the first few weeks cause stomach upset, but if I take the generic - I get a rash, sore throat and it's hard to swallow. Exactly what I get when I took a sulfa drug when I was a child. The generic probably contains sulfa. Also generic drugs can contain a smaller or larger amount of the prescribed ingredients. 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. Symptoms of allergic reaction to generic of plaquenil Plaquenil Hydroxychloroquine Sulfate, Plaquenil Hydroxychloroquine - Side Effects, Dosage. Hydroxychloroquine 200 mg tab tabletCan hydroxychloroquine cause low white blood cell countChloroquine 250 mg Consumer information about the medication HYDROXYCHLOROQUINE - ORAL Plaquenil, includes side effects, drug interactions, recommended dosages, and storage information. Read more about the prescription drug HYDROXYCHLOROQUINE - ORAL. HYDROXYCHLOROQUINE - ORAL Plaquenil side effects.. Allergic reaction to Plaquenil Lupus Forums at The Lupus Site. Plaquenil Side Effects Common, Severe, Long Term -. Summary. Hydroxychloroquine Plaquenil is a drug that is classified as an anti-malarial drug. Plaquenil is prescribed for the treatment or prevention of malaria. It is also prescribed for the treatment of rheumatoid arthritis, lupus, and the side effects of lupus such as hair loss, joint pain, and more. What are the possible side effects of hydroxychloroquine Plaquenil, Plaquenil Sulfate, Quineprox? Get emergency medical help if you have signs of an allergic reaction hives ; difficulty breathing; swelling of your face, lips, tongue, or throat. Then I had an allergic reaction to the plaquenil - a rash all over my body, neck, arms and legs. I stopped taking it 1 week ago. All of my symptoms of lupus and sjogrens are coming back and I am feeling worse each day. I have had irregular hearbeats since I stopped taking the plaquenil - all day and night.