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. Hydroxychloroquine and kidney function Plaquenil cause anemia Does hydroxychloroquine interact with potassium Will plaquenil help nodles when you have sjogrens For patients taking hydroxychloroquine to prevent malaria. 400 to 600 milligrams mg taken as a single dose or in two divided doses once a day. Then, 200 to 400 mg taken as a single dose or in two divided doses once a day. Your doctor may adjust your dose if needed. However, dose is usually not more than 600 mg or 6.5 mg per kilogram kg. The cost for hydroxychloroquine oral tablet 200 mg is around $92 for a supply of 50, depending on the pharmacy you visit. Prices are for cash paying customers only and are not valid with insurance plans. Hydroxychloroquine is usually taken with food or milk to prevent stomach upset. The dosage and length of treatment are based on your medical condition and response to therapy. In children, dosage. 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. Hydroxychloroquine 200 RA and Hydroxychloroquine How Effective is it for., Hydroxychloroquine Prices, Coupons & Patient Assistance. Ranitidine and plaquenil The recommended adult dose for rheumatoid arthritis is 400-600 mg daily for 4-12 weeks followed by 200-400 mg daily. Systemic lupus erythematosus is treated with 400 mg once or twice daily for several weeks then 200-400 mg daily. Hydroxychloroquine should be taken with food or milk in order to reduce stomach upset. Hydroxychloroquine Plaquenil Side Effects & Dosage for.. Hydroxychloroquine Oral Uses, Side Effects, Interactions.. Hydroxychloroquine Prices, Coupons & Savings Tips - GoodRx. Hydroxychloroquine is in a class of drugs called antimalarials. It is used to prevent and treat acute attacks of malaria. It is also used to treat discoid or systemic lupus erythematosus and rheumatoid arthritis in patients whose symptoms have not improved with other treatments. Hydroxychloroquine Oral tablet 200mg Drug Medication Dosage information. Learn about the reported side effects, related class drugs, and how these medications will affect your daily lifestyle. Plaquenil comes in 200 milligram mg tablets that are taken by mouth. To prevent malaria in adults, two tablets are typically taken once a week, on the same day each week.