Quinine

The Basics

What is Quinine?

Used alone or with other medications to treat malaria.

Brand names for Quinine

Qualaquin

How Quinine is classified

Anti-infective Agents, Antiparasitic Agents, Antimalarials, Antiprotozoal Agents, Foodborne Diseases, Glucosephosphate Dehydrogenase Deficiency

Quinine During Pregnancy

Quinine pregnancy category

Category CNote that the FDA has deprecated the use of pregnancy categories, so for some medications, this information isn’t available. We still think it’s useful to list historical info, however, given what a common proxy this has been in the past.

What we know about taking Quinine while pregnant

There are extensive published data but few well-controlled studies of QUALAQUIN in pregnant women. Published data on over 1,000 pregnancy exposures to quinine did not show an increase in teratogenic effects over the background rate in the general population; however, the majority of these exposures were not in the first trimester. In developmental and reproductive toxicity studies, central nervous system (CNS) and ear abnormalities and increased fetal deaths occurred in some species when pregnant animals received quinine at doses about 1 to 4 times the human clinical dose. Quinine should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. P. falciparum malaria carries a higher risk of morbidity and mortality in pregnant women than in the general population. Pregnant women with P. falciparum malaria have an increased incidence of fetal loss (including spontaneous abortion and stillbirth), preterm labor and delivery, intrauterine growth retardation, low birth weight, and maternal death. Therefore, treatment of malaria in pregnancy is important. Hypoglycemia, due to increased pancreatic secretion of insulin, has been associated with quinine use, particularly in pregnant women.

Taking Quinine While Breastfeeding

What are recommendations for lactation if you're taking Quinine?

Because of the low levels of quinine in breastmilk, amounts ingested by the infant are small and would not be expected to cause any adverse effects in breastfed infants. The dosage in milk is far below those required to treat an infant for malaria.[1] However, quinine should not be used in mothers with an infant who is glucose-6-phosphate dehydrogenase (G6PD) deficient.[2] Even the relatively small amounts of quinine in tonic water ingested by the mother have caused hemolysis in G6PD-deficient infants.

Maternal / infant drug levels

Because of the low levels of quinine in breastmilk, amounts ingested by the infant are small and would not be expected to cause any adverse effects in breastfed infants. The dosage in milk is far below those required to treat an infant for malaria.[1] However, quinine should not be used in mothers with an infant who is glucose-6-phosphate dehydrogenase (G6PD) deficient.[2] Even the relatively small amounts of quinine in tonic water ingested by the mother have caused hemolysis in G6PD-deficient infants.

Possible effects of Quinine on milk supply

Relevant published information was not found as of the revision date.

Possible alternatives to Quinine

Chloroquine, Hydroxychloroquine.