Objective To study sexual activity related to preconceptional multivitamin supplementation.
Design The rate of sexual activity (weekly sexual intercourse number) was compared before and during multivitamin supplementation and between women with multivitamin and placebo-like trace element supplementation.
Setting The Hungarian randomised double blind controlled trial of periconceptional multivitamin supplementation.
Participants Six hundred and eighty-seven women with multivitamin and 655 women with trace element supplementation in the preconceptional period.
Results There was no difference in the rate of sexual activity between the multivitamin and the trace element groups.
Conclusion Multivitamins do not increase sexual activity.