In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. Tell your doctor if you have ever had any unusual or allergic reaction to chloroquine or hydroxychloroquine. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes. Unless you are taking chloroquine to treat malaria or liver disease caused by protozoa, use of this medicine is not recommended during pregnancy.
Chloroquine passes into breast milk.
Chloroquine has not been reported to cause problems in nursing babies. However, babies and children are especially sensitive to the effects of chloroquine. The amount in breast milk is not enough to prevent the infant from getting malaria. Children are especially sensitive to the effects of chloroquine. This may increase the chance of side effects during treatment.