1. Do not use in patient with thromboembolic disorder and liver disease.
2. Should not use in women known risk of thromboembolic disorder such as a past history of vasculitis, obesity, diabetes mellitus, hypertension.
3. Do not use in patients with a history of liver tumors and patients or suspected cancer related to sex hormones such as breast cancer or genital cancer.
4. Be cautious when use in women who smoke, especially with aged more than 35 years old. Consult physician before use.
5. In case of use other than contraception, consult the physician.
6. If any undesirable effects occur, consult the physician immediately.