Reason for taking BC at same time
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Reason for taking BC at same time
| Mon, 06-12-2006 - 11:22pm |
Hey, guys
Not that this applies to me, but I was just wondering, what is the reason behind the directions to take the pill at the same time (within 2 hours) every day? How does changing times affect the pills effectiveness?
Just curious.

Each pill only lasts in the system for a certain length of time before it starts to decline in strength.
The half-life (the time it takes for half of the hormones to leave your bloodstream) of most progestins is around 26 hours, the half-life of estrogen is about 28 hours.