How it works
Combination oral contraceptives inhibits ovulation, other alterations include changes in the cervical mucus and changes in the endometrium (which reduce the likelihood of implantation). They reduce sperm penetration if ovulation does occur by altering the cervical mucus; cause changes in the endometrium which reduce the risk of nidation and may change the tubal transport of the ova through the fallopian tubes.
Common side effects
Vomiting, Nausea, Abdominal bloating, Absence of menstrual periods, Blood clot in the blood vessels, Intermenstrual bleeding, Breast tenderness, Breast enlargement, Abnormal milky discharge from breast, Breast secretion, Unusual production of breast milk in women and men, Headache, Increased blood pressure, Irregular menstrual cycle, Mood swings