Hypersensitivity to the active substance or to any of the excipients listed in Description.
Undiagnosed vaginal bleeding.
Known or suspected progesterone sensitive malignant tumours.
Porphyria.
Severe hepatic dysfunction or disease.
Known missed abortion or ectopic pregnancy.
Active arterial or venous thromboembolism or severe thrombophlebitis, or a history of these events.