Loestrin is a form of oral contraceptive used to prevent pregnancy. It works by stopping the female ovulation cycle each month. Without ovulation, there are no eggs released from the ovaries and without eggs, pregnancy is nearly impossible. This type of medication also thickens the lining of the uterus so that if ovulation does occur, it is still difficult for the sperm to find the egg.

Loestrin is taken in the form of an oral tablet. This tablet must be taken once a day, at approximately the same time everyday for maximum effectiveness. If more than 24 hours passes between two pills, the likeliness of pregnancy becomes higher. When taken correctly, this form of medication is over 99 percent effective in preventing pregnancy. Additional contraceptives are always recommended as protection against sexually transmitted diseases.

Common side effects users may experience when taking Loestrin include nausea, vomiting, breast pain, stomach pain, irregular menstrual periods, headaches and weight change. If you are experiencing more severe side effects, contact your doctor for assistance.

Occasionally Loestrin will be prescribed to regulate the menstrual cycle or to alleviate menopausal symptoms. It may also be prescribed to treat acne in females who are older than 15 years of age. This type of medication may be prescribed for other purposes as well, as directed by your doctor.

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