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Guest
The studies needed to show such conclusive proof cannot be done at this time. Indeed, it has been shown there is a strong likelyhood they are abortificient. Even the manufactures claim this. What I find disingenuous is when dealing with such a profound life issue like this we are so quick to claim we know with strong certainty the medication does not induce abortion when we know no such thing.Do you have conclusive evidence that asprin and caffeine do not interfere with implantation? Such evidence is very difficult to produce. Logically speaking, you cannot prove a negative. However, in the case of emergency contraception, the second post in this thread does have links to two papers that suggest there is no post-fertilization effect.
There have been numerous threads on this topic, and so far, nobody has posted a scientific, peer-reviewed article showing that either the morning-after pill or the more traditional oral contraceptives prevents implantation.
As for caffeine and ASA when have they been used in the same way these drugs are intended to be used?