Re: Truth, but won't help
by
kaiso
08/06/2008, 8:55 AM #
"the morning after pill prevents a fertilized egg from getting the
chance to develop, it does not other than theoretically prevent
fertilization."
This is untrue. The morning after pill functions like birth control - it suppresses ovulation, prevents fertilization, and may prevent implantation.
Sperm, if you are unaware, can survive 3-5 days in the female reproductive system. The egg has a much shorter shelf life.
If you have unprotected sex once and become pregnant, therefore, it is highly likely that you actually ovulated well after the deed - days even. The goal of emergency contraception is to prevent these conceptions by supressing the coming ovulation and/or preventing fertilization - in the exact same manner that ordinary contraceptive pills do, with the same low risk of possibly preventing the implantation of an already fertilized egg.
RU486 - which is not the same thing - is used in the US as a chemical abortifacient, post-implantation. It can also be used in lower doses, earlier on, in the same capacity as the morning-after pills - in which case it is being used as emergency contraception, again attempting to prevent ovulation and fertilization, not development or even implantation. It is not approved for this use in the US, but even if it were, it simply is a drug with two different applications.