Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine: Incidence not known Some side effects of hydroxychloroquine may occur that usually do not need medical attention. Plaquenil for thromboembolism Plaquenil treats what symptoms does Side Effects Nausea, stomach cramps, loss of appetite, diarrhea, dizziness, or headache may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Remember. Side effects include irritability, headache, weakness, hair lightening or loss, stomach upset, nausea, dizziness, muscle pain, rash and itching. Rarely, hydroxychloroquine can affect the bone marrow leading to reduced white blood cells leukopenia or platelets thrombocytopenia and abnormal red blood cells anemia. 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. Malaria is spread by mosquitoes. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. These side effects may go away during treatment as your body adjusts to the medicine. Plaquenil eye effects Hydroxychloroquine - Side Effects, Dosage, Interactions., Hydroxychloroquine Plaquenil Side Effects & Dosage for Malaria Chloroquine in early pregnancyDoes plaquenil show up on a drug testCan i take plaquenil eith naproxenHow long to take plaquenil for ra Feb 19, 2020 Common side effects may include headache, dizziness, ringing in your ears; nausea, vomiting, stomach pain; loss of appetite, weight loss; mood changes, feeling nervous or irritable; skin rash or itching; or. hair loss. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. Plaquenil Hydroxychloroquine - Side Effects, Dosage.. Hydroxychloroquine Side Effects Common, Severe, Long Term.. 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. Plaquenil is the devil! Worked well 1st 2 mts. After that I had issues with my vision, felt waves of nervousness, and extreme anxiety where I started to question my sanity. Hallucinated, broke out in rashes and crying spells. Rare side effects Vision changes/loss of vision There is a chance that retinal damage will occur while taking. Seeing light flashes/streaks/halos/blacked out areas of vision. Muscle weakness. Severe abdominal pain. Severe nausea/vomiting. Seizures. Shortness of breath. Any signs of.