Ovulation stimulation/induction (in vitro maturation — IVM) is the process of ovulation boosting by medication. To achieve the maturation of eggs number, the doctors prescribe daily injections of gonadotropins — hormones that lead to the maturation of several eggs at once in contrast with the common menstrual cycle when only one egg is maturated. The duration of this step depends on the type of induction protocol. The dose of stimulative drugs is selected by the doctor individually. Ovulation stimulation is carried out under the supervision of a specialist.