It does not work against certain types of malaria (chloroquine-resistant). The United States Center for Disease Control provides updated guidelines and travel recommendations for the prevention and treatment of malaria in different parts of the world. Plaquenil help with copay Arthritis and hydroxychloroquine 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. To treat lupus erythematosus, the average adult dose is 400 mg once or twice daily. Children—Use and dose must be determined by your doctor. For treatment of lupus Adults—200 to 400 milligrams mg taken as a single dose or in two divided doses once a day. However, dose is usually not more than 400 mg once a day. Children—Use and dose must be determined by your doctor. Missed Dose Tell your doctor if any of the following side effects, as they may be indications of a more serious reaction Headache. Loss of appetite. Dizziness. Nausea. Diarrhea, vomiting, or stomach pain. Skin rash. This medication is also used, usually with other medications, to treat certain auto-immune diseases (lupus, rheumatoid arthritis) when other medications have not worked or cannot be used. Discuss the most recent information with your doctor before traveling to areas where malaria occurs. Plaquenil missed dose RA and Hydroxychloroquine How Effective is it for Rheumatoid Arthritis., Hydroxychloroquine Oral Route Proper Use - Mayo Clinic What time should i take my prednisone and my plaquenilAralen side effects and instructionsRisks of plaquenilPlaquenil painful muscle spasms Missed Dose. If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to. Hydroxychloroquine Oral Uses, Side Effects, Interactions, Pictures.. Plaquenil Hydroxychloroquine - Side Effects, Dosage.. Plaquenil - Side Effects, Uses, Dosage, Overdose.. Most side effects will go away when your body gets used to the medicine. Tell your doctor if you have these side effects. A lower dose may stop them. Do not lower the dose on your own. Plaquenil stays in your body for about 3 months. If you must stop it, it will take a while for the side effects to go away. Rheumatoid Arthritis. The action of hydroxychloroquine is cumulative and may require weeks to months to achieve the maximum therapeutic effect see CLINICAL PHARMACOLOGY. Initial adult dosage 400 mg to 600 mg 310 to 465 mg base daily, administered as a single daily dose or in two divided doses. In a small percentage of patients, side effects may require temporary reduction of the initial. What happens if I miss a dose Plaquenil, Plaquenil Sulfate, Quineprox? Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.