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The following week no pills are taken, and the week after that you start a new pack.Twenty-eight day packs are taken the same way, but you take the seven inactive pills the last week.
It can be easy to let birth control pills expire without even realizing it.In the case of 28-day packs, there are seven “reminder pills” that don’t contain hormones.When taking 21-day packs, one pill is taken every day around the same time for three weeks.You wouldn’t want to take this pack anytime after that month, though. » You should dispose of expired birth control pills properly.Most medication package inserts have disposal instructions, or you can check to see if there’s a drug take-back program in your area.Birth control pills are up to 99 percent effective when taken at the same time every day without missing a dose.
This is considered “perfect use.” If you miss a dose or take the pill at a different time each day, the pill is about 91 percent effective.
The progestin found in the minipill functions in a similar way.
This hormone also stops ovulation and thickens cervical mucus to prevent sperm from reaching an egg.
This is considered “typical use.” Combination birth control pills are available in 21- or 28-day packs.
In both types of packs, there are 21 pills that contain hormones.
Be aware that most pharmacies won’t exchange expired pill packs for new ones.