Nonoxynol-9 is the main active ingredient in spermicide. It works by helping to block the cervix and slow down sperm so they can't and fertilize an egg.
Birth control patch ingredients
Main hormones in Birth control patch
progestin
What Lowdown reviewers say
Benefits: What this birth control can help with
There are no benefits that are recognised in scientific research or guidelines for this birth control
Acne or bad skin
Heavy periods
PMS and PMDD
PCOS symptoms
Period pain
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Birth control alternatives and comparisons
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