Sronyx is considered to be a safe and effective means of contraception, particularly for those women who are more sensitive to estrogens. In general, hormonal contraceptives very slightly increase the risk of developing blood clots, heart disease, gallbladder disease, liver tumours, and estrogen sensitive cancers such as breast cancer, cervical cancer and endometrial cancer. While the benefits of hormonal contraceptives far outweigh these risks, women who have a personal or family history of the above health conditions should consult a doctor before taking them, as hormonal methods of contraception may not be suitable for them. See ‘Contraindications’ above for more information.