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. Rosuvastatin and hydroxychloroquine How to get hydroxychloroquine less expensive Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine 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 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. Dosage for Plaquenil. The adult dose of Plaquenil to suppress malaria is 400 mg on the same day each week. The pediatric weekly suppressive dosage is 5 mg/kg of body weight. The adult dose of Plaquenil to treat an acute attack of malaria is an initial dose of 800 mg followed by 400 mg in six to eight hours and 400 mg for two more days. 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 Hydroxychloroquine Side Effects Common, Severe, Long Term., Hydroxychloroquine Plaquenil Side Effects & Dosage for Malaria Hydroxychloroquine related rash on external genitaliaHow does plaquenil work for lupus Hydroxychloroquine is a prescription drug. It comes as an oral tablet. Hydroxychloroquine is available as the brand-name drug Plaquenil. It’s also available in a generic version. Hydroxychloroquine Side Effects, Dosage, Uses, and More. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. Hydroxychloroquine Oral Tablet 200Mg Drug Medication Dosage.. Hydroxychloroquine 200 mg Tablets Due to the national surge in health related Over-The-Counter ordering, certain OTC products are shipping slower than normal. We will continue to use fair share allocation of OTC product to combat shortages and strive to get orders out in a timely manner. 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. 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.