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Oral contraception efficacy

Ampicillin [NP] Interruption of enterohepatic circulation of estrogen possible reduction in oral contraceptive efficacy. Some other oral antibiotics may have a similar effect. [Pg.1394]

Griseofulvin [NE] Possible inhibition of oral contraceptive efficacy mechanism unknown. [Pg.1394]

Phenytoin [NP] Increased estrogen metabolism possible reduction in oral contraceptive efficacy. [Pg.1394]

Archer JS, Archer DF. Oral contraceptive efficacy and antibiotic interaction a myth debunked. J Am Acad Dermatol 2002 46(6) 917-23. [Pg.252]

Compare the efficacy of oral contraceptives with that of other methods of contraception. [Pg.737]

Ethinyl estradiol is metabolized in the liver via the cytochrome P-450 system. It is metabolized primarily via CYP450 3A4. When reviewing drug interactions of oral contraceptives, it is important to keep in mind that antibiotic administration during contraceptive use may decrease the efficacy of many combined contraceptives. Refer to Table 45-4 for a list of common drug interactions seen with oral contraceptives.1,31... [Pg.746]


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See also in sourсe #XX -- [ Pg.179 ]




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