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Vaginal contraceptive film or C-Film is a form of contraceptive consisting of a spermicide-treated plastic film, intended to be inserted into the vagina before sexual intercourse.[1][2] Because they do not involve any kind of barrier, the action of the device is entirely through the effect of the spermicide. They do not offer any protection against sexually transmitted diseases.
Multiple clinical studies have shown six-month pregnancy risk of roughly 12% to 25%[3][4] similar to the levels of effectiveness of other spermicide-only methods.[5] This is substantially less effective than many other forms of contraception -- condoms and the contraceptive pill for example, show 2% - 15% and < 1% - 8% per year pregnancy rates respectively, with the range of pregnancy rates for each largely depending on the amount of care taken in use.[5][6]
References [edit]
- ^ "C-film: A new spermicidal contraceptive". Drug and therapeutics bulletin 12 (22): 87–88. 1974. PMID 4457300. edit
- ^ Frankman, O.; Raabe, N.; Ingemansson, C. A. (1975). "Clinical evaluation of C-Film, a vaginal contraceptive". The Journal of international medical research 3 (4): 292–296. PMID 1165004. edit
- ^ Raymond, E.; Dominik, R. (1999). "Contraceptive effectiveness of two spermicides: A randomized trial". Obstetrics and gynecology 93 (6): 896–903. PMID 10362151. edit
- ^ Raymond, E. G.; Lien Chen, P.; Luoto, J.; Spermicide Trial, G. (2004). "Contraceptive Effectiveness and Safety of Five Nonoxynol-9 Spermicides: A Randomized Trial". Obstetrics & Gynecology 103 (3): 430–439. doi:10.1097/01.AOG.0000113620.18395.0b. PMID 14990402. edit
- ^ a b Trussell, J (2007). "Contraceptive efficacy". Ardent Media. Retrieved 2011-03-13.
- ^ "How effective is contraception at preventing pregnancy?". National Health Service. Retrieved 2011-02-21.
