Pregnancy: There are insufficient human data upon which to base an evaluation of risk of oseltamivir to the pregnant woman or developing fetus. Because animal reproductive studies may not be predictive of human response and there are no adequate and well-controlled studies in pregnant women, oseltamivir should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
Lactation: In lactating rats, oseltamivir and oseltamivir carboxylate are excreted in the milk. It is not known whether oseltamivir or oseltamivir carboxylate is excreted in human milk. Oseltamivir should, therefore, be used only if the potential benefit for the lactating mother justifies the potential risk to the breast-fed infant.