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. Aralen and food Hydroxychloroquine what is it used for Adverse effects Seizures. Deafness or tinnitus. Nausea, vomiting, diarrhea, abdominal cramps, and anorexia. Mild and transient headache. Skin itchiness, skin color changes, hair loss, and skin rashes. Unpleasant metallic taste. Chloroquine retinopathy. Hypotension and electrocardiographic. Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine may cause some unwanted effects. 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 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. 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. Chloroquine headache Aralen chloroquine Malaria Drug Side Effects & Dosage, Hydroxychloroquine Side Effects Common, Severe, Long Term. Chloroquine dose during pregnancyWhat is hydroxychloroquine made ofIs mefloquine in plaquenil Chloroquine can be used to kill malaria parasites living in red blood cells. Side effects of hydroxychloroquine may include headache. Vomiting may be a side effect of chloroquine use. Both hydorxychloroquine and chloroquine are traditionally used as medication to treat or prevent malaria. What Is the Difference between Hydroxychloroquine and.. Plaquenil Oral Uses, Side Effects, Interactions, Pictures.. Hydroxychloroquine Plaquenil Side Effects & Dosage for Malaria. Hydroxychloroquine Plaquenil is a drug that is classified as an anti-malarial drug. Plaquenil is prescribed for the treatment or prevention of malaria. It is also prescribed for the treatment of rheumatoid arthritis, lupus, and the side effects of lupus such as hair loss, joint pain, and more. For all uses of chloroquine Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered. Signs of liver problems like dark urine, feeling tired, not hungry, upset stomach or stomach pain. Signs of low blood sugar like dizziness, headache, feeling sleepy, feeling weak. Mar 16, 2020 Chloroquine is an immunosuppressive drug and anti-parasite commonly used in malaria treatment. It’s most often taken as a tablet by mouth. including headaches and gastrointestinal symptoms.