They prevent pregnancy by maintaining a constant hormone level which inhibits ovulation.
Pills come in a range of dosages and a prescription is required for their purchase.
Oral contraceptives are highly effective in preventing pregnancy when used consistently and correctly as prescribed. Being sexually active may expose you to sexually transmitted diseases as well as unintended pregnancy. A latex condom can be used to increase the effectiveness of your chosen method of birth control and also provide significant protection against the spread of these infections. Take your first pill on the very same day your period begins. Take your first pill on the Sunday after your period begins.