No it does not.
It doesn't.
It's used for Amonhorrea, when your menstruation is gone but not due to pregnancy.
Advil don't prevent pregnancy no matter how many you take.
a condom
no it can't prevent pregnancy
Vitamins don't prevent pregnancy.
BV won't prevent pregnancy.
Lithium does NOT prevent pregnancy.
Depends on what pills you are talking about. For any pill that prevents pregnancy, or end pregnancy, there are instructions or prescription to follow.
NO ! ONLY contraception or abstinence can prevent pregnancy !
Starch as in pasta, potatoes etc? That does not prevent pregnancy.
No. Cytotec can be used for abortion but not to prevent pregnancy.