Cetrotide is a drug included in the so-called antagonist drugs, its main function is to prevent spontaneous ovulation.
There are two protocols for the administration of the antagonist drugs. One consists of a single dose (3 mg subcutaneously) with the possibility of repeating it after 72 hours and the other involves a multiple dose (0.25 mg per day subcutaneously). In our environment, the most widely used protocol is the multiple dose.
The antagonist drug should be started on the sixth day of stimulation or when there is a follicle larger than 14 mm. Both protocols are valid and can be used in assisted reproduction treatments.