It works by changing the levels of the two hormones. Instead of rising and falling, the hormone levels remain constant, and ovulation, fertilization, and implantation are prevented. The minipill keeps a steady level of progestin in the bloodstream. The steady level prevents fertilization and implantation. Minipills are always taken for 28 days with no break.
Every pill contains the same level of progestin.
Who Should Never Use the Pill Do not use the Pill if you have ever had any of the following conditions. If you have any of the following conditions discuss your birth control options with your health care provider, who may advise you not to use the Pill. Your health care provider may want more details about your medical history or recommend more testing if you have any of the following. Combined oral contraceptives are birth control pills which contain two hormones, an estrogen and a progestin. Complete information about this contraceptive is available from your clinician, pharmacist, or the package insert accompanying the specific pill you are taking .