In a double-blind study, 117 non-pregnant women with vaginal candidosis were treated for 3 days with 200 mg-tablets of ketoconazole taken once, twice or three times daily. The incidence of predisposing factors or of a recurrence history did not differ between treatment groups. Their male partners were randomly assigned to receive ketoconazole, 200 mg twice daily or placebo for 3 consecutive days. Cure and recurrence rates were not different in the three treatment groups, with or without simultaneous treatment of the male partner. Treatment of the sexual partner in the three dose-regimen-groups proved not to have influenced the therapeutic effect.