[Medicamentous sterility as a subterfuge in disputed paternity cases (author's transl)].

During forensic examination of male fertility in disputed paternity cases cheating is possible. There are substances with effects on spermatogenesis; on transport of spermatozoa and on hormonic regulation. Bis-dichloroacetyl-octamethylendiamine seems the most suitable. It has no side-effects, exept for an antabuse-effect. By daily treatment with 200 mg sterility starts after 2--3 months. After stopping the treatment fertility becomes normal after 2 months.