Brevinor and Ovysmen - both contain 35 micrograms of ethinyl oestradiol and 500 micrograms norethisterone - considered more oestrogenic than many other pills because they have a higher oestrogen component
Marvelon - considered more oestrogenic because its progestogen component (150 micrograms desgestrel) has less of a counteractive effect on the actions of the oestrogen (30 micrograms ethinyl oestradiol) (1)
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