TY - CHAP M1 - Book, Section TI - Contraception A1 - El-Ibiary, Shareen A2 - Sutton, S. Scott PY - 2019 T2 - McGraw-Hill's NAPLEX® Review Guide, 3e AB - Contraception implies the prevention of pregnancy following sexual intercourse by inhibiting viable sperm from coming into contact with a mature ovum or by preventing a fertilized ovum from implanting successfully in the endometrium. Additional benefits of contraception include improvements in menstrual cycle regularity, prevention of sexually transmitted diseases, and management of perimenopause. Contraceptive methods are available nonprescription or by prescription. Nonprescription contraceptives include condoms, spermicides, emergency contraception (EC), and in some states hormonal contraception is provided by pharmacists without a prescription. Prescription contraceptives are generally hormone based. There are a variety of factors that go into method selection and include effectiveness, cost, accessibility, side effects, return to fertility rate, frequency of sexual activity, STI prevention, past medical history, and concomitant medications. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - accesspharmacy.mhmedical.com/content.aspx?aid=1158316512 ER -