VCF Contraceptive (Vaginal Contraceptive Film) 12 bulk pack is a great alternative to hormonal birth control methods. It is the #1 Film Recommended by doctors, can't be felt by either partner, lasts up to 3 hours and begins to dissolve instantly. Unlike prescription, hormonal methods, VCF can be purchased over the counter and has far fewer side effects.VCF has been around for over 15 years, is FDA approved for the prevention of pregnancy and has undergone many clinical studies.Like all spermicides, VCF birth control uses N-9 as the active ingredient which can cause an irritation in about 2% of the population. It is delivered in a water soluble film which is inserted 15 minutes prior to intercourse and lasts up to 3 hours.The bulk pack 24 is delivered in hand-packed bags of 12.