Question

Name an oral pills use as a contraceptive by human females . explain how does it prevent pregnancy​

Answer 1

the ncert mentioned one saheli.

Their effectiveness is approximately 75%, being most effective when administered as quickly as possible after the act of unprotected intercourse. The pills can cause nausea and vomiting, so the pre-administration of an anti-emetic may help alleviate these symptoms.

Saheli is different from other birth control pills because it does not contain any hormones. Instead of using the hormone estrogen to prevent pregnancy, it contains a drug that blocks estrogen.

Usually, increased doses of estrogen stop a woman's ovaries from releasing an egg. However, by blocking estrogen in the uterus, Saheli alters the uterus lining, which prevents a fertilized egg from implanting.