Title: Method for contraception by the administration of sequential contraceptive preparations

Abstract: Oral contraceptive consisting essentially in admixture with a pharmaceutically acceptable carrier, of 21-23 separate dosage units adapted for oral ingestion, containing an amount of an estrogen corresponding in activity to 0.030-0.050 mg. 17.alpha.-ethinylestradiol, with the first 10-12 dosage units being in combination with a gestagen corresponding in activity to about 0.050-0.125 mg. of d-norgestrel and the remainder in combination with a gestagen corresponding in activity to 2-3 times the amount of gestagen in the first 10-12 units.

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Inventors: Lachnit-Fixson, Ursula (Berlin, DT)

Application Number: 350590
Filing Date: 1973-04-12
Publication_date: 1976-02-17
Assignee: Schering Aktiengesellschaft (Berlin & Bergkamen, DT)
Primary Class(es): 514/170 514/843, 552/509
Other Classes:
US Patent Ref:

3502772	Mar, 1970	Ijzerman	424/239.
3568828	Mar, 1971	Lerner	424/239.
3639600	Feb, 1972	Hendrik	424/243.
3733407	May, 1973	Segre	424/239.
3795734	Oct, 1974	Rochefort	424/242.

Other Refs:
Primary Examiner: Roberts, Elbert L.
Assistant Examiner:
Attorney: Millen, Raptes & White