Which of the following progesterones is preferred in combination with estrogen in low dose oral contraceptive pills?
Desogesterol
Norethisterone
Norgesterel
Levonorgestrel
Low dose contraceptive pills are in recent use which contains a very minimal dose of estradiol (about 20 - 35 microgram) and desogesterol (a newer progestin). The desogesterol with a high progesteronic activity is preferred compared to the other three progestins. Ref: Textbook of Gynaecology By Rao, 183 - 184; Harrison's Endocrinology' 2nd edition, Page 199