Give one example each for the following:
(i) Antifertility drugs
(ii) Narcotic analgesics.

Explanation

(i) The chemicals which prevent the pregnancy in women are called anti-fertility drugs, Example: Mixture of norethindrone and ethynylestradiol (novestrol)
(ii) They produce sleep so they are used for the relief of post operative pain, cardiac pain, labour pain in child birth etc. Example: Morphine, heroin, codeine etc.