Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Chloroquine ingredients Chloroquine phosphate 250 mg 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. Note This document contains side effect information about hydroxychloroquine. Some of the dosage forms listed on this page may not apply to the brand name Plaquenil. For the Consumer. Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil may cause some unwanted effects. Find patient medical information for Plaquenil Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. 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 ativan Plaquenil Oral Interactions with Other Medication, Plaquenil Side Effects Common, Severe, Long Term - Chloroquine fda pregnancy categoryAutophagy flux kroemer chloroquineHydroxychloroquine and lansoprazoleChloroquine 250 mg dose Summary Drug interactions are reported among people who take Lorazepam and Plaquenil together. This study is created by eHealthMe based on reports of 498 people who take Lorazepam and Plaquenil from Food and Drug Administration FDA, and is updated regularly. eHealthMe helps people find optimal drugs between effectiveness and side effects. Lorazepam and Plaquenil drug interactions - eHealthMe. Plaquenil Oral Uses, Side Effects, Interactions.. Side Effects of Ativan Lorazepam, Warnings, Uses. Plaquenil or hydroxychloroquine is under the quinolone family. These medications are initially used in the prophylaxis and treatment of malaria. Plaquenil has replaced chloroquine because it produces less retinal side effects. Along with its needed effects, lorazepam the active ingredient contained in Ativan may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Find patient medical information for Ativan Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.