Guest guest Posted May 23, 2006 Report Share Posted May 23, 2006 http://www.rxlist.com/cgi/generic2/modafinil_wcp.htm Patients Using Contraceptives The effectiveness of steroidal contraceptives may be reduced when used with PROVIGIL tablets and for one month after discontinuation of therapy (See DRUG INTERACTIONS Potential Interactions with Drugs That Inhibit or are Metabolized by Cytochrome P-450 Isoenzymes and Other Hepatic Enzymes). Alternative or concomitant methods of contraception are recommended for patients treated with PROVIGIL tablets, and for one month after discontinuation of PROVIGIL. Pregnancy Animal studies to assess the effects of modafinil on reproduction and the developing fetus were not conducted at adequately high doses or according to guidelines which would ensure a comprehensive evaluation of the potential of modafinil to adversely affect fertility, or cause embryolethality or teratogenicity (see Impairment of Fertility and Pregnancy, Pregnancy Catagory C below). Patients should be advised to notify their physician if they become pregnant or intend to become pregnant during therapy. Patients should be cautioned regarding the potential increased risk of pregnancy when using steroidal contraceptives (including depot or implantable contraceptives) with PROVIGIL tablets and for one month after discontinuation of therapy. Impairment of Fertility Oral administration of modafinil to male and female rats had no effects on fertility when administered prior to and throughout mating, and continued in females through day 7 of gestation, at doses up to 480 mg/kg/day (23 times the recommended human dose of 200 mg/day on a mg/m2 basis). Pregnancy Pregnancy Category C: Modafinil administered orally to pregnant rats throughout the period of organogenesis caused, in the absence of maternal toxicity, an increase in resorptions and an increased incidence of hydronephrosis and skeletal variations in the offspring at a dose of 200 mg/kg/day (10 times the recommended human dose of 200 mg/day on a mg/m2 basis) but not at 100 mg/kg/day. However, in a subsequent study of up to 480 mg/kg/day (23 times the recommended human dose on a mg/m2 basis), which included maternally toxic doses, no adverse effects on embryofetal development were seen. Modafinil administered orally to pregnant rabbits throughout the period of organogenesis at doses up to 100 mg/kg/day (10 times the recommended human dose on a mg/m2 basis) had no effects on embryofetal development. However, in a subsequent study in pregnant rabbits, increased resorptions, and increased alterations in fetuses from a single litter (open eye lids, fused digits, rotated limbs), were observed at 180 mg/kg/day (17 times the recommended human dose on a mg/m2 basis), a dose that was also maternally toxic. Modafinil administered orally to rats throughout gestation and lactation at doses up to 200 mg/kg/day (5 times the recommended human dose on a mg/m2 basis), had no effects on the postnatal development of the offspring. There are no adequate and well-controlled studies in pregnant women. Modafinil should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. http://www.rxlist.com/cgi/generic2/modafinil_ad.htm Ethinyl Estradiol - Administration of modafinil to female volunteers once daily at 200 mg/day for 7 days followed by 400 mg/day for 21 days resulted in a mean 11% decrease in Cmax and 18% decrease in AUC0- 24 of ethinyl estradiol (EE2; 0.035 mg; administered orally with norgestimate). There was no apparent change in the elimination rate of ethinyl estradiol. Quote Link to comment Share on other sites More sharing options...
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