Use of gestagens in combination with (6S)5-methyl tetrahydro folate for endometriosis therapy with simultaneous reduction of the side effects of therapy and reduction in the risk of congenital deformities for with the onset of pregnancy

Use of gestagen in combination with (6S)-5-methyltetrahydrofolate for the production of a pharmaceutical preparation (I) for the therapy of endometriosis with simultaneous reduction of therapy side-effects, preferably negative effects on bone density or bone metabolism, osteoporosis risk, risk of congenital malformations and pregnancy complications in early stage of pregnancy, is claimed, where the daily dose of the gestagen corresponds to at least an ovulation inhibiting dose to maximally dual of the ovulation inhibiting dose. - ACTIVITY : Gynecological; Osteopathic. - MECHANISM OF ACTION : None given.