Common side effects of Sprintec include headaches, nausea, vomiting, breast tenderness and swelling of the feet and ankles. Missed periods, irregular periods and vaginal bleeding between periods may also occur. Serious side effect are rare but may include mood changes, severe abdominal pain, lumps in the breast, dark urine, yellowing of the skin and blood clots, according to WebMD.
Sprintec is a contraceptive medication that includes a combination of estrogen and progestin hormones. According to WebMD, the medication works by preventing ovulation, thickening the vaginal fluid to prevent sperm from reaching the egg and altering the uterus lining to prevent attachment of a fertilized egg. Sprintect can also decrease bleeding during periods, prevent painful periods, treat acne and decrease the risk of developing ovarian cysts. These birth control pills do not prevent the spread of sexually transmitted infections.
Sprintect must be taken orally each day at roughly the same time for maximum effectiveness. Each pack contains 21 pills, and pills should be taken 24 hours apart, according to Web MD. Users taking birth control pills for the first time should take the first pill on the first day of their menstrual period or on the Sunday following the beginning of their period.
WebMD urges that users seek medical advice immediately if they are experiencing serious side effects or symptoms of an allergic reaction, such as a rash, dizziness, trouble breathing or swelling of the facial area.