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. Does plaquenil work right away Plaquenil drug class Is plaquenil safe to use Do not share your drugs with others and do not take anyone else's drugs. Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about Plaquenil hydroxychloroquine, please talk with your doctor, nurse, pharmacist, or other health care provider. PLAQUENIL hydroxychloroquine sulfate tablets is indicated for the treatment of rheumatoid arthritis, and discoid and systemic lupus erythematosus, in patients who have not responded satisfactorily to drugs with less potential for serious side effects. PLAQUENIL is not recommended for the treatment of complicated malaria. PLAQUENIL is not effective against chloroquine or hydroxychloroquine-resistant strains. of Plasmodium species see CLINICAL PHARMACOLOGY – Microbiology. PLAQUENIL is not recommended for the treatment of malaria acquired in geographic 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. Drug warnings for plaquenil Plaquenil Oral Uses, Side Effects, Interactions, Pictures, Warnings., Plaquenil Hydroxychloroquine Sulfate Hydroxychloroquine plaquenilSymptoms of eye damage from plaquenil Plaquenil Warnings. Take with food. Take this medication at least 4 hours before or 4 hours after antacids. Avoid prolonged or excessive exposure to direct and/or artificial sunlight while using this medication. WARNING Keep Out of the Reach of Children. Fatal Poisoning may occur if chewed or swallowed. PLAQUENIL Warnings Pregnancy & Lactation RxSaver by RetailMeNot. PLAQUENIL hydroxychloroquine sulfate Label. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. 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 Before using Plaquenil, tell your doctor if you are allergic to any drugs, or if you have psoriasis, porphyria, liver disease, alcoholism, or glucose-6-phosphate dehydrogenase G-6-PD deficiency. Take Plaquenil for the full prescribed length of time for malaria. Your symptoms may improve before the infection is completely cleared. What is Plaquenil Hydroxychloroquine? Learn about drug imprint, side effects, uses treating, dosage, interaction, overdose, and warnings.