New contraceptive for men.
D000284:Administration, Oral; D003272:Contraceptive Agents, Male / Q000008:administration & dosage* / Q000494:pharmacology; D003276:Contraceptives, Oral / Q000008:administration & dosage* / Q000494:pharmacology; D005260:Female; D006801:Humans; D008297:Male; D009543:Nifedipine / Q000008:administration & dosage* / Q000494:pharmacology; D013084:Sperm-Ovum Interactions / Q000187:drug effects*
D003272:Contraceptive Agents, Male; D003276:Contraceptives, Oral; D009543:Nifedipine