Hydroxychloroquine is available as the brand-name drug Plaquenil. Generic drugs usually cost less than the brand-name version. Hydroxychloroquine may be used as part of a combination therapy. Hydroxychloroquine and thalassemia Hydroxychloroquine methotrexate drug interactions Hydroxychloroquine sulphate over the counter 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. Side Effects. Continuing ringing or buzzing or other unexplained noise in the ears. feeling of constant movement of self or surroundings. irritability. nausea. nervousness. nightmares. sensation of spinning. shakiness and unsteady walk. uncontrolled eye movements. unsteadiness, trembling, or other. Based on this information, possible bothersome but usually not dangerous side effects of Plaquenil may include Nausea and vomiting. Diarrhea and abdominal pain. Headaches. Dizziness or a spinning sensation vertigo. Ringing in the ears tinnitus. Loss of appetite. Nightmares. Hydroxychloroquine is used to treat lupus erythematosus and rheumatoid arthritis. It isn’t fully understood how this drug works to treat lupus erythematosus or rheumatoid arthritis. That means you may need to take it with other drugs. It treats malaria by killing the parasites that cause the disease. Plaquenil side effects sunlight Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses, Hydroxychloroquine Oral Route Side Effects - Mayo Clinic Hydroxychloroquine and rheumatoid arthritisCan chloroquine cause anemia Plaquenil. Uses. Hydroxychloroquine is used to prevent or treat malaria infections caused by mosquito bites. It does not work against certain types of. Side Effects. Precautions. Interactions. Plaquenil Oral Uses, Side Effects, Interactions, Pictures.. Plaquenil Side Effects - Antibiotics Home Page. Hydroxychloroquine Side-effects, uses, time to work. Summary Photosensitivity reaction is found among people who take Plaquenil, especially for people who are female, 50-59 old, have been taking the drug for 6 - 12 months, also take medication Humira, and have Pain. This study is created by eHealthMe based on reports of 48,911 people who have side effects when taking Plaquenil from Food. What are some side effects that I need to call my doctor about right away? Signs of an allergic reaction, like rash; hives ; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in. Signs of liver problems like dark urine, feeling tired, not hungry, upset. Just journal and keep track of how you are going during your Plaquenil tryout.a couple of tips, stay out of uv light, the sun and avoid sunlamps - Plaquenil increases your sun sensitivity. I take my tablets with breakfast, have a bit to eat, take tablet, have a bit more. It can upset stomachs, so is better taken with a meal.