Pregnancy: There are no adequate data from the use of tolterodine in pregnant women.
Studies in animals have shown reproductive toxicity (see Pharmacology: Toxicology: Preclinical Safety Data under Actions). The potential risk for humans is unknown.
Consequently, tolterodine is not recommended during pregnancy.
Lactation: No data concerning the excretion of tolterodine into human milk are available. Tolterodine should be avoided during lactation.
Fertility: Animal studies do not show an effect of tolterodine on fertility (see Pharmacology: Toxicology: Preclinical Safety Data under Actions). There are no human data.