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Norethisterone oenanthate as an injectable contraceptive: use of a modified dose schedule. 1978

O F Giwa-Osagie, and J Savage, and J R Newton

Norethisterone oenanthate (NET-OEN) was given as an injectable contraceptive to 295 healthy women over 1606 woman-months. A modified injection schedule was used. There were no pregnancies, and the 12-month, life-table, use-related discontinuation rate was 39.1/100 users. Menstrual disturbance (10.8/100 women), minor side effects (13.5/100 women), and personal reasons (12.0/100 women) were the main causes of use-related discontinuation. There was no difference in use-related discontinuation rates between women receiving their first injection during a normal menstrual period and those receiving it immediately after a pregnancy. There were no serious side effects. The use of NET-OEN in certain groups of women is recommended, particularly in those in need of highly effective contraception, who cannot or do not wish to take oral contraceptives, who are lactating, or who are awaiting hospital admission for sterilisation.

UI MeSH Term Description Entries
D007273 Injections, Intramuscular Forceful administration into a muscle of liquid medication, nutrient, or other fluid through a hollow needle piercing the muscle and any tissue covering it. Intramuscular Injections,Injection, Intramuscular,Intramuscular Injection
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009640 Norethindrone A synthetic progestational hormone with actions similar to those of PROGESTERONE but functioning as a more potent inhibitor of ovulation. It has weak estrogenic and androgenic properties. The hormone has been used in treating amenorrhea, functional uterine bleeding, endometriosis, and for CONTRACEPTION. 19-Norpregn-4-en-20-yn-3-one, 17-hydroxy-, (17alpha)-,Ethinylnortestosterone,Norethisterone,Norpregneninolone,Conceplan,Micronor,Monogest,Nor-QD,Norcolut,Norcolute,Norethindrone, (1 beta)-Isomer,Norlutin,Nor QD,NorQD
D003271 Contraceptive Agents, Female Chemical substances or agents with contraceptive activity in females. Use for female contraceptive agents in general or for which there is no specific heading. Contraceptives, Female,Agents, Female Contraceptive,Female Contraceptive Agents,Female Contraceptives
D004334 Drug Administration Schedule Time schedule for administration of a drug in order to achieve optimum effectiveness and convenience. Administration Schedule, Drug,Administration Schedules, Drug,Drug Administration Schedules,Schedule, Drug Administration,Schedules, Drug Administration
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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