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 rheumatoid arthritis moa How plaquenil works If you miss a dose, take it as soon as you remember. If it is very near the time of the next dose, skip the missed dose and continue with your normal dosing schedule. Do not double dose at one time to catch up. Plaquenil should be stored away from light and moisture and at room temperature up to 86 degrees F. Please be careful with this. 2 excedrin in a day is normal. 4 is a bit much, but you'll probably just be jittery or have an upset stomach. If you take more, you could get a mallory-weiss tear in your stomach. The first dose of Plaquenil is usually taken one to two weeks before traveling to an area where malaria is prevalent. Doses are then continued for four weeks after exposure. Hydroxychloroquine comes as a tablet to take by mouth. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information. What happens if you double doses of plaquenil Accidentally took double dose of levothyroxine - Answers on HealthTap, If I accidentally take an extra dose of Excedrin what will happen. Chloroquine malariaAralen malaria preventionPlaquenil for polymyalgia rheumaticaPlaquenil side effects sunPlaquenil prescribed by rheumatologist cut in half However, dose is usually not more than 400 mg once a day. Children—Use and dose must be determined by your doctor. Missed Dose. If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses. Storage Hydroxychloroquine Oral Route Proper Use - Mayo Clinic. Plaquenil Hydroxychloroquine - Side Effects, Dosage.. Stopping plaquenil. DailyStrength. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking hydroxychloroquine and call your doctor at once if you have trouble focusing, if you see light streaks or flashes in your vision, or if you notice any swelling or color changes in your eyes. And benefits of taking Plaquenil while you are pregnant. When Plaquenil is taken for long periods of time, there is an increased risk to the unborn child. It may cause problems with brain function, hearing, balance and vision. Ask your doctor about the risks and benefits of taking Plaquenil while you are breastfeeding. 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. You should have an eye examination every year to prevent a very rare but serious eye problem.