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. What is the filler in hydroxychloroquine Chloroquine atovaquone Oct image plaquenil toxicity Hearing loss inability to move the eyes increased blinking or spasms of the eyelid joint or muscle pain large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs light-colored stools loss of balance control lower back or side pain muscle trembling, jerking, or stiffness Note This document contains side effect information about hydroxychloroquine. Some of the dosage forms listed on this page may not apply to the brand name Plaquenil. For the Consumer. Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil may cause some unwanted effects. Most often, people are experiencing a loss of smell instead of a loss of taste. In other disorders of the chemical senses, an odor, a taste, or a flavor may be distorted. Dysgeusia dis-GYOO-zee-a is a condition in which a foul, salty, rancid, or metallic taste sensation persists in the mouth. 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 loss of taste Hydroxychloroquine Side Effects, Dosage, Uses, and More, Plaquenil Side Effects Common, Severe, Long Term - Does plaquenil change heart rateHow does plaquenil treat rheumatoid arthritis Skin itchiness, skin color changes, hair loss, and skin rashes.13 Chloroquine-induced itching is very common among black Africans 70%, but much less common in other races. It increases with age, and is so severe as to stop compliance with drug therapy. Chloroquine and Hydroxychloroquine May Be a Covid-19.. Taste Disorders NIDCD. Hydroxychloroquine Side Effects Common, Severe, Long Term.. Aug 18, 2015 However, chloroquine can cause side effects or intensify symptoms already present, such as abdominal discomfort, nausea, vomiting, and diarrhea. These side effects can also occur during the use of primaquine 16 being suitable to ingest the medication with food to avoid such side effects 18. Common Side Effects 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 Chloroquine has been shown to cause severe hypoglycemia including loss of consciousness that could be life-threatening in patients treated with or without antidiabetic medications see PRECAUTIONS, Drug Interactions.