Si modo
Diamond Member
Yes, but as pointed out earlier it does so by the same mechanism that a woman already pregnant will not be able to get pregnant again if they have sex while pregnant.
It's the same hormones.
The only way to say this is hypocrisy is to say all women having sex during pregnancy are hypocrites.
I don't know what you're talking about, but look again: For those who missed my ealier link (from the package insert of Ortho-triclen (R)):[Emphasis added this time]....
Combination oral contraceptives act by suppression of gonadotropins. Although the
primary mechanism of this action is inhibition of ovulation, other alterations include
changes in the cervical mucus (which increase the difficulty of sperm entry into the uterus)
and the endometrium (which reduce the likelihood of implantation).
....
Go Ask Alice!: How do birth control pills work?
Again... you are focusing on a secondary 'safeguard' in the design of hormonal birth control... again... the main way a BC pill works if thru ovulation suppression
The FDA has a good grasp of how drugs work, so I'm confident in my source. Thank you anyway. Regardless, and as I an others have already stated several times, the primary mechanism of action of the Pill (combined - meaning more than one hormone used - oral contraceptive pill) IS prevention of fertilization. When that mechanism fails, the Pill has a secondary mechanism of action - prevention of implantation of the fertilized egg.
The single action oral contraceptive pills only prevent fertilization. They have a pretty high fail rate. The combined oral contraceptive pills, the most commonly used, have less of a fail rate due to more than one mechanism of action.