This medicine is also sometimes given off-label to help the following conditions: Also, let your doctor know if you drink large amounts of alcohol before starting on this medicine. Your doctor will probably want to order frequent tests to check your body's response to chloroquine. Plaquenil nausea vomiting Chloroquine panreatic cancer Excessive sleepiness plaquenil Plaquenil build up The itching reactions caused by chloroquine or cowhage don't respond to anti-histamines. Certain opioids used to treat pain, such as morphine, can also cause a histamine-independent itch as a side. Skin rash, hives, or itching sore throat sores, ulcers, or white spots on the lips or in the mouth sticking out of the tongue stiffness of the limbs sweating swollen or painful glands tightness in the chest trouble breathing tunnel vision twitching, twisting, or uncontrolled repetitive movements of the tongue, lips, face, arms, or legs A severe eye problem has happened with chloroquine. This may lead to lasting eyesight problems. The risk may be higher if you have some types of eye or kidney problems. The risk may also be higher with some doses of chloroquine, if you use chloroquine for longer than 5 years, or if you take certain other drugs like tamoxifen. Let your healthcare provider know if your symptoms either don't improve or worsen while taking this medicine. Keep all appointments with your doctor and laboratory. Chloroquine and itching HDI Admix Why does chloroquine cause itching, Chloroquine Oral Route Side Effects - Mayo Clinic Chloroquine prophylaxis dosageWhat should a nurse monitor when taking hydroxychloroquinePlaquenil and lasikChloroquine admePlaquenil skin itching Jul 30, 2019 Before the administration of chloroquine, the patient had only a mild skin erythema in the irradiated area, which was consistent with the radiotherapy dose she had received. On day 3 of chloroquine therapy, she developed localized brisk bullous eruptions in the irradiated area, which developed into a patch of fulminant moist desquamation. Chloroquine Side Effects Common, Severe, Long Term -. Chloroquine Indications, Side Effects, Warnings -. Chloroquine Aralen - Side Effects, Dosage, Interactions.. Chloroquine is a medication used to prevent and to treat malaria in areas where malaria is known to be sensitive to its effects. Certain types of malaria, resistant strains, and complicated cases typically require different or additional medication. It is also occasionally used for amebiasis that is occurring outside the intestines, rheumatoid arthritis, and lupus erythematosus. Effects of chloroquine? Chloroquine is a relatively well-tolerated. medicine. The most common adverse reactions reported are stomach pain, nausea, vomiting, and headache. These side effects can often be lessened by taking chloroquine with food. Chloroquine may also cause itching in some people. All medicines may have some side effects. Chloroquine phosphate may cause an upset stomach. Take chloroquine phosphate with food. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Use chloroquine phosphate exactly as directed. Do not use more or less of it or use it more often than prescribed by your.