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Contraceptives, Oral
Oral Contraceptives; Oral Contraceptives, Low-Dose; Oral Contraceptives, Phasic; Contraceptives, Low-Dose Oral; Contraceptives, Phasic Oral; Low-Dose Oral Contraceptives; Oral Contraceptives, Low Dose; Phasic Oral Contraceptives
Compounds, usually hormonal, taken orally in order to block ovulation and prevent the occurrence of pregnancy. The hormones are generally estrogen or progesterone or both.