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Bientôt une pilule contraceptive pour homme

 

L'Ecole de médecine de l'Université de Washington (Etats-Unis) vient d'annoncer qu'une pilule contraceptive masculine venait d’être testée avec succès.

Quarante hommes en bonne santé âgés de 18 à 50 ans, ont pris chaque jour pendant 28 jours la pilule 11-béta-méthyl-19-nortestostérone dodécylcarbonate, ou de façon abrégée, le 11-beta-MNTDC.

 Dix d'entre eux ont reçu, sans le savoir, un placebo. Deux dosages de pilules ont été testés, 14 hommes ont reçu des doses de 200 mg et 16 des doses de 400 mg.

Pendant 28 jours, 10 d'entre eux ont reçu quotidiennement un placebo ; les autres la 11-béta-MNTDC à différentes concentrations.

Résultat : le 11-beta-MNTDC a considérablement abaissé le niveau de deux hormones nécessaires à la production de spermatozoïdes en comparaison avec la prise de placebo. Le traitement "diminue la production de spermatozoïdes tout en préservant la libido".

Ces travaux de recherche sont d'autant plus encourageants que la pilule semble bien passer. Les chercheurs ne décrivent aucun effet secondaire grave, seuls quelques cas de fatigue, d'acné ou de maux de tête.

Le 11-beta-MNTDC ne sera pas disponible avant plusieurs années de tests. Il pourrait être à l’avenir un concurrent du diméthandrolone undécanoate, un autre contraceptif prometteur pour l’homme, également sous test clinique.