Parasites that cause malaria typically enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. Chloroquine sulphate structure Hydroxychloroquine-induced pigmentation Side Effects Blurred vision, nausea, vomiting, abdominal cramps, headache, and diarrhea may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. Remember that. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away Belly pain. Stomach cramps. Not hungry. Upset stomach or throwing up. Headache. Diarrhea. Change in color of skin. Change in color of hair. Hair loss. For treatment of amebiasis, one dose is usually taken for 2 days and then half the dose every day for 2 to 3 weeks. It is usually taken in combination with other amebicides. Chloroquine phosphate may cause an upset stomach. Take chloroquine phosphate with food. Chloroquine is also used to treat amebiasis (infection caused by amoebae). Chloroquine is used to treat and to prevent malaria. Chloroquine injection side effects Chloroquine Oral Route Side Effects - Mayo Clinic, Chloroquine Indications, Side Effects, Warnings - Plaquenil to treat lyme diseasePlaquenil and retinal damagePlaquenil manufacturer discountPlaquenil ra support groupChloroquine tablets reviews Common side effects may include diarrhea, vomiting, stomach cramps; headache; changes in hair or skin color; temporary hair loss; or. mild muscle weakness. Chloroquine Uses, Side Effects, Dosage & Interactions. Chloroquine MedlinePlus Drug Information. Aralen chloroquine Malaria Drug Side Effects & Dosage. 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. To do so may increase the chance of serious side effects. For patients taking chloroquine to prevent malaria Your doctor will want you to start taking this medicine 1 to 2 weeks before you travel to an area where there is a chance of getting malaria. Jul 30, 2019 Chloroquine side effects Anxiety. attempts at killing oneself. back, leg, or stomach pains. black, tarry stools. bleeding gums. blistering, peeling, or loosening of the skin. blood in the urine or stools. blurred or decreased vision. change in near or distance vision. chest discomfort or.