Ethynodiol Diacetate as a Contraceptive

The progestogen-only pill

“…The values in Table 6.1 are still the most relevant ones because they involve large numbers of woman-years of treatment and give a realistic idea of failure rates. Reduction of the daily dose below that shown in Table 6.1 usually leads to an increased pregnancy rate although, suprisingly, Ruis-Velasco et al [5] found that doses of ethynodiol diacetate of 250 to 500 |ig/day were equally effective. Reduction of the daily dose below that shown in Table 6.1 usually leads to an increased pregnancy rate although, suprisingly, Ruis-Velasco et al [5] found that doses of ethynodiol diacetate of 250 to 500 |ig/day were equally effective.…”