Name two hormones that are constituents of contraceptive pills. Why do they have high and effective contraceptive value ? Name a commonly prescribed non-steroidal oral pill. [3]

Two hormones that are constituents of contraceptive pills are : [1]
(1) Estrogen
(2) Progesterone

Estrogen and Progesterone combination in birth control pills suppress ovulation-keeping ovaries from releasing an egg.

It alters the quality of cervical mucus and thins the lining of the uterus to prevent implantation.[1] (any one)

Commonly prescribed non-steroidal oral pills are : Saheli, Centron, Novex-DS etc. [1] (any one)