Induction of ovulation

Absent or irregular ovulation is a primary cause of infertility.

Absent or irregular ovulation can be treated by taking medication (clomifene, letrozole), usually by oral route. This is called ovulation induction.

The first step of IVF, ovulation stimulation, is most often carried out by subcutaneously injecting drugs, based on the number of eggs that are to be retrieved.

The drugs used to stimulate ovulation in IVF are gonadotrophins, GnRH agonists and GnRH antagonists.

The higher the doses of hormones injected, the more eggs produced. It’s relatively easy today to control the ovarian response to therapy.

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