- The effects of rosiglitazone (Avandia) on the developing human fetus at the recommended therapeutic dose are unknown; for this reason, and because rosiglitazone has been associated with fetal death and growth retardation in rats and rabbits and placental pathology in rats, women of child-bearing potential must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation; should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her study physician immediately and will be removed from the trial