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. Treatment of discoid lupus erythematosus with chloroquine Plaquenil for discoid lupus Hydroxychloroquine arthritis forum Can a double dose of blood pressure med hurt - My pharmacist printouts usually say whether to take the med or not if one forgets. Even antibiotics have a time span between doses which a lot of people don't know. With b/p meds, when there is a question of not taking the med, then it is important to monitor the b/p. 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. 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. 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 What should I do if I accidentally take an extra dose of., Plaquenil Hydroxychloroquine - Side Effects, Dosage. Hydroxychloroquine with alcoholWhat is side effects of plaquenil Oh god, I've done this before. It's such a crappy feeling when you realize what you've done. You'll be fine. I felt really antsy in the afternoon time and got the sweats and a headache. I did end up knocking off work a few hours early, it was one of those nothing to do days anyway. No need to call a doctor, they'll just tell you to wait it out. Ahh I accidentally took 2 doses of my antidepressant Bupropion same.. If I accidentally take an extra dose of Excedrin what will happen.. I take Plaquenil 200MG TAB.tablet twice daily I just.. Plaquenil Hydroxychloroquine may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Drugs A-Z Pill Identifier Supplements Symptom Checker Diseases Dictionary Media Taking Plaquenil long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking Plaquenil 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. Hi honey, YES.stopping plaquenil for a couple of days can cause symptoms to arise or get worse.needs to be taken exactly as prescribed. Twice a day, every day. Missing one dose wont make a major difference but skipping more then one, or days absolutely can.