<p>It is estimated that more than 10 million pregnancies have been exposed to Dydrogesterone. So far there were no indications of a harmful effect of Dydrogesterone use during pregnancy. No data exist on excretion of Dydrogesterone in mother&#39;s milk. Experience with other progestogens indicates that progestogens and the metabolites pass to mother&#39;s milk in small quantities. Whether there is a risk to the child is not known. Therefore Dydrogesterone should not be used during the lactation period.</p>