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Stacy Wiegman, PharmD, Pharmacy, answeredVCF Vaginal Contraceptive Film differs from other spermicidal (sperm killing) products in two ways. The active ingredient in VCF is nonoxynol 9; other spermicides may contain octoxynol 9, or benzalkonium chloride. In addition, VCF delivers its active ingredient via a thin, paper-like film placed up against the cervix; other spermicides come in foam, gel, or suppository form. The effectiveness of all of spermicides are similar, however.