Ethinyl estradiol/levonorgestrel/ferrous fumarate

The purpose of this study is to determine the effect of JNJ-55308942: 1) high dose at steady state on the single dose pharmacokinetics of a cocktail containing selective probes of cytochrome P450 (CYP) enzymes (CYP3A, CYP2D6 and CYP2C19) in healthy adult participants (Part 1); 2) high dose at steady state on the single dose pharmacokinetics of a combination oral contraceptive containing levonorgestrel and ethinyl estradiol in healthy female participants (Part 2); and 3) low dose at steady state on the single dose pharmacokinetics of a cocktail containing selective probes of CYP enzymes (CYP3A, CYP2D6 and CYP2C19) in healthy adult participants (Part 3).

This trial evaluated folic acid supplementation after oral administration of the ethinyl estradiol + levonorgestrel + folic acid (0.02 mg + 0.10 mg + 0.4 mg) coated tablet (Level-Fol® Biolab Sanus Farmacêutica, São Paulo, Brazil) in healthy female volunteers, based on statistical comparisons of folate levels in erythrocytes. Its safety and tolerability was also evaluated.