Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Will hydroxychloroquine help autoimmune liver disease What was hydroxychloroquine originally used for In a phototoxic reaction, drug molecules absorb the energy of a specific UV wavelength, which causes the molecule to undergo a chemical change and emit energy that damages surrounding tissues. The reaction is often immediate. It usually occurs after the first dose of a drug and within 24 hours of taking the drug and exposure to the sun. I can say, however, that I have not had any cross allergic reaction to other drugs sometimes associated with sulfa allergies. Whether you try Plaquenil or not is ultimately up to you and your doctor, but a lot will depend on the type and severity of reactions that you've had. Rashes are certainly a lot less severe than respiratory reactions. 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. 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. Plaquenil and allergy medications Plaquenil Uses, Dosage & Side Effects -, Plaquenil and Sulfa Allergies" Lupus Community - Support Group Can you take plaquenil while pregnant Plaquenil is the brand name of hydroxychloroquine, a drug used to prevent or treat malaria 2. Plaquenil is also used for long-term treatment of autoimmune diseases such as rheumatoid arthritis RA and systemic lupus erythmatosis. According to the Mayo Clinic, it can take up to six months' constant use before an effect is seen in RA 1. Long-Term Side Effects of Plaquenil for Rheumatoid Arthritis.. Plaquenil Hydroxychloroquine - Side Effects, Dosage.. Plaquenil Oral Uses, Side Effects, Interactions.. Plaquenil can damage the retina of the eye, which can lead to blindness. This eMedTV page lists other side effects or complications that may occur with Plaquenil. Warnings and precautions on who should not use this drug are also listed on this page. Jul 24, 2018 The malaria medication hydroxychloroquine Plaquenil may ease the symptoms of some types of sun allergies. Therapy If you have a severe sun allergy, your doctor might suggest gradually getting your skin used to sunlight each spring. I have a sulfa allergy, and have taken Plaquenil for 4 years without any adverse effects. I can say, however, that I have not had any cross allergic reaction to other drugs sometimes associated with sulfa allergies. Whether you try Plaquenil or not is ultimately up to you and your doctor, but a lot will depend on the type and severity of.