There are different formulations available and they have two main hormones with different strength , the main two ones are estrogen and progesterone.
There are also different birth controls in the market and you have to be specific which one are you referring to.
All contraceptive pills contain a progestin, an artificial progesterone. Most also contain an estrogen.
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There are no methods of birth control that are made less reliable by taking an immunization.
I think so and they are made, but very few men seem to take the responsibility of birth control.
1960.
birth control.
control birth
Ortho Tricyclen is made by Ortho.
Birth control vaccines don't exist, but you can get birth control shots.
Yes, you can. While birth control is reliable, there is no birth control that is 100% effective.
Her activism in support of birth control was the reason she was controversial.
Birth control is what is used to prevent unintended pregnancy, there are multiple different types of birth control that work in different ways, it is ignorant to say 'birth control' to mean one specific type of birth control. Without knowing what type of birth control you're referring to we cannot answer your question - some birth control does absolutely nothing to your hormones, some birth control completely shuts down your hormones.
"Contraceptive" and "birth control" are synonymous. All contraceptives are methods of birth control.
Birth control is not for weight control.