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. Eye doctor hydroxychloroquine Chloroquine treatment Can plaquenil cause loss of hearing Avoid taking antacids and kaolin within 4 hours of taking this medicine. It is best to separate these medicines by at least 4 hours. Tell your doctor or health care professional right away if you have any change in your eyesight. Your vision and blood may be tested before and during use of this medicine. Chloroquine does not treat the hypnozoite liver stage forms of Plasmodium and will therefore not prevent relapses of malaria due to P. vivax or P. ovale. Additional treatment with an anti-malarial agent active against these forms, such as an 8-aminoquinoline, is required for the treatment of infections with P. vivax and P. ovale. Cardiac Effects Side effects that you should report to your doctor or health care professional as soon as possible -allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue. -changes in vision. -decreased hearing or ringing of the ears. 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 expired side effects Chloroquine Phosphate Bulk Uses, Side Effects., Chloroquine - FDA prescribing information, side effects and uses Hydroxychloroquine sulfate weight gainPlaquenil discontinued Some side effects of chloroquine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Chloroquine Side Effects Common, Severe, Long Term -. Chloroquine Oral Tablet Drug Information, Side Effects, Faqs. Aralen Chloroquine Uses, Dosage, Side Effects.. Chloroquine, a drug President Donald Trump has announced is being fast-tracked for clinical testing as a treatment for COVID-19, can have deadly side effects — particularly if accidentally. These side effects were seen most often in patients receiving large doses for treatment of lupus or rheumatoid arthritis; however, such reactions have been noted in patients taking therapeutic doses for short periods. Symptoms often resolved over time with a reduction of the dose or discontinuation of chloroquine. Tell your doctor if any of the following side effects become severe or don't go away Loss of appetite. Mild dizziness. Mild diarrhea. Clumsiness. Mild headache. Nausea or stomach cramps.