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. Hydroxychloroquine cause rash Aralen malaria Hydroxychloroquine oral tablet is available as a brand-name drug and a generic drug. Brand name Plaquenil. Hydroxychloroquine comes only as a tablet you take by mouth. Hydroxychloroquine is used to treat malaria, lupus erythematosus, and rheumatoid arthritis. In usual doses for treatment of malaria, headache, blurred vision, and lichenoid rash can occur. Chloroquine may block the entrance of potassium into the cells and primaquine also has an effect on blocking sodium channels. Chloroquine is effective against susceptible strains of the malarial parasites Plasmodium vivax, P. ovale, and P. falciparum, as well as certain parasitic worms and amoebas. Some mild side effects may occur, including headache and abdominal cramps, which are common to antimalarials. Visual impairment may occur with long-term use of chloroquine. 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 Chloroquine Oral Route Side Effects - Mayo Clinic, Side Effects of Chloroquine and Primaquine and Symptom. Humira vs plaquenilPlaquenil demardsDoes plaquenil reduce feversDo hydroxychloroquine get you highHydroxychloroquine dose for ra Chloroquine is used to prevent or treat malaria caused by mosquito bites in countries where malaria is common. Malaria parasites can enter the body through these mosquito bites, and then live in body tissues such as red blood cells or the liver. Chloroquine Oral Uses, Side Effects, Interactions.. Chloroquine drug Britannica. Chloroquine toxicity and Headache - Symptom Checker - check.. Specifically it is used for chloroquine-sensitive malaria. Other uses include treatment of rheumatoid arthritis, lupus, and porphyria cutanea tarda. It is taken by mouth. It is also being used as an experimental treatment for SARS-CoV-2 infections. Common side effects include vomiting, headache, changes in vision and muscle weakness. 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. 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.