The hormones prevent pregnancy, but the placebo pills contain no hormones.
One option is to use a second form of contraception (condoms) during the placebo period - and for a week after, while the hormone BC gets back to active levels.
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Overhead, the Albatross hangs motionless upon the air,
And deep beneath the rolling waves,
In labyrinths of Coral Caves,
The Echo of a distant time
Comes willowing across the sand;
And everthing is Green and Submarine
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