The study include 30 rabbit females in latest period of pregnancy with measurement of prolactin hormone level after parturition directly, and then divided the rabbits into three groups: the first group (10 rabbits) given liquid solution of Nigella sativa
seed, in dose (2.5 ml liquid solution of 0.25 gm of Nigella sativa
seed) daily for one month. Second group (10 rabbits) given liquid solution of Bromocriptine in dose (0.1 mg) daily for one month. Third group (10 rabbits) as control. Prolactin hormone measured in these three groups at 7,14,21,28 days from parturition and within administration period.
The results revealed obvious decrease in prolactin hormone level (less than 0.5 nanogm) in newly parturition rabbits after third week from administration in first group which administrated with Melissa in a nearly result to second group which treated with Bromocriptine which decrease prolactin hormone level after second week from treated compared with control group which persist prolactin hormone in high level for first month from parturition.