MIXED PREPARATION BASED ON NATURAL ESTROGENS FOR CONTRACEPTION Russian patent published in 1998 - IPC

FIELD: medicine. SUBSTANCE: mixed preparation for contraception consists of many stages: the first stage involves 2-4 daily doses being each daily dose has natural estrogens only as an active component; the second stage involves 22-16 daily doses being each daily dose has a combination of at least one natural estrogen and at least one synthetic or natural gestogen as an active component; the third stage involves 2-4 daily doses being each daily dose has natural estrogens only as an active component; the fourth stage involves 2-4 daily doses being each daily dose has pure placebo as pharmaceutical component. Preparation improves the course of cyclic bleeding and decreases or completely eliminates adverse effects. EFFECT: improved quality, enhanced effectiveness of preparation. 4 cl, 5 ex