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. Chloroquine synthesis slideshare Hydroxychloroquine 200 mg without prescription Plaquenil generic vs brand Get medical help right away if you have any very serious side effects, including sensitivity to light, vision changes e.g. blurred vision, seeing light flashes/streaks/halos, missing/blacked-out areas of vision, muscle weakness, numbness/tingling/pain of the arms/legs. The crazy thing about this itching is that this is the 3rd attempt back on the plaquenil and with the 1st two tries I had no itching but different side effects that made me discontinue it. The 1st time I was on it brand name 400 mg. for 8 months and had to d/c due to terrible intestinal cramping and tinnitus. Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more. 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 skin rash side effects Hydroxychloroquine Side Effects Common, Severe, Long Term., Terrible Itching on Plaquenil---PLEASE HELP. Plaquenil teeth side effectsHydroxychloroquine for low plateletsHydroxychloroquine and ibuprofen Hydroxychloroquine may cause some people to be agitated, irritable, or display other abnormal behaviors. It may also cause some people to have suicidal thoughts and tendencies, or to become more depressed. If you or your caregiver notice any of these side effects, tell your doctor right away. This medicine may cause hypoglycemia low blood sugar. Hydroxychloroquine Oral Route Precautions - Mayo Clinic. Hydroxychloroquine Side Effects, Dosage, Uses, and More. Plaquenil – RheumInfo. Most common side effects over time * 1 month Toxic skin eruption skin breakdown due to toxic substance Rash. Rash maculo-papular red area on the skin that is covered with small confluent bumps Urticaria rash of round, red welts on the skin that itch intensely It is taken by mouth. Common side effects include vomiting, headache, changes in vision and muscle weakness. Severe side effects may include allergic reactions. It does not appear to be safe during pregnancy. For the Consumer. 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.