If your symptoms do not improve within a few days or if they become worse, check with your doctor. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are not able to see well . Chloroquine may cause blurred vision, difficulty in reading, or other change in vision. It may also cause some people to become lightheaded. If these reactions are especially bothersome, check with your doctor.
Malaria is spread by mosquitoes.
Wear long-sleeved shirts or blouses and long trousers to protect your arms and legs, especially from dusk through dawn when mosquitoes are out. Apply mosquito repellent, preferably one containing DEET, to uncovered areas of the skin from dusk through dawn when mosquitoes are out. Use mosquito coils or sprays to kill mosquitoes in living and sleeping quarters during evening and night-time hours. Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.