Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. Cost of plaquenil versus hydroxychloroquine Hydroxychloroquine porphyria cutanea tarda mechanism What companies makes safest hydroxychloroquine Does hydroxychloroquine affect bone graft healing Nausea nervousness nightmares sensation of spinning shakiness and unsteady walk uncontrolled eye movements unsteadiness, trembling, or other problems with muscle control or coordination vomiting Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional. My Dr. prescribed Plaquenil the other day, I took 2-200mg pills in a 24 hr period and I was sick as a dog. I had stomach cramps, nausea and painful diarrhea, not to mention heart palpitations and an all over uneasiness. By the end of the 24 hrs I had also contracted a chest cold. Side effects are nausea and diarrhea, which often improve with time. Less common side effects include rash, changes in skin pigment such as darkening or dark spots, hair changes, and muscle weakness. Rarely, hydroxychloroquine can lead to anemia in some individuals. This can happen in individuals with Plaquenil is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. This medicine is not effective against all strains of malaria. Plaquenil diarrhea nausea Plaquenil Oral Uses, Side Effects, Interactions., Plaquenil & Nausea - Autoimmune diseases - Inspire Medicine for lupus plaquenilIs plaquenil a maoi Nausea & diarrhea – Plaquenil agrees with most people. Rarely it can cause an upset stomach or diarrhea. Skin rash – Plaquenil can rarely cause a rash. Patients who experience this rare side effect should stop taking this medicine and contact their doctor. Headaches – Plaquenil can rarely cause a headache. Plaquenil – RheumInfo. PATIENT FACT SHEET Hydroxychloroquine Plaquenil. Plaquenil aka HCQS – Anyone on this getting severe.. Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Plaquenil is generally well-tolerated, but side effects are possible. Common side effects linked to Plaquenil include nausea and diarrhea. Taking the medication with food eases nausea for most people taking the drug. Less common side effects include skin rashes, hair thinning, and weakness. Nausea from Plaquenil, etc. nowah1965 posted. Plaq did give me diarrhea, and there are OTC meds like Immodium AD and script meds like Hyoscyamine that can help there. Over time my tummy adjusted to Plaq. I did find that taking it with milk made my tummy troubles worse, but it is recommended to take it with food.