AIM:To evaluate the anti-fertility effect of methanolic(MeTD) and aqueous(AqTD) flower extracts of Tabernaemon-tana divaricata in rats.METHODS:The anti-fertility activity of the extracts was evaluated using two experimental animal models:1) Estrogenic activity was carried out in immature female rats using ethinyl estradiol as standard.The evaluation parameters includes changes in uterine weight and histopathology of uterus.2) Anti-implantation and early abortifacient activity was performed in female Wistar rats.The number of implants and resorbtions were compared to vehicle control.RESULTS:Phytochemical analysis of MeTD and AqTD revealed the presence of carbohydrates,amino acids,steroids,glycosides,flavonoids,alkaloids and tannins.In estrogenic activity,the MeTD and AqTD were offered significant estrogen-like activity at 500 mg?kg-1,p.o.by increasing the uterine weight com-pared to vehicle control group.In Anti-implantation and early abortifacient activity study,MeTD(500 mg?kg-1,p.o.) showed significant effect and it was evident by decrease in the number of implants and increase in the number of resorbtions compared to vehicle control group.CONCLUSION:The MeTD at 500 mg?kg-1,p.o.possess significant estrogenic,anti-implantation and early abortifacient activ-ity,while the AqTD at 500 mg?kg-1,p.o.was found to possess significant estrogenic activity and the results are in consistent with the literature reports related to anti-fertility effect of flower extracts of Tabernaemontana divaricata. AIM: To evaluate the anti-fertility effect of methanolic (MeTD) and aqueous (AqTD) flower extracts of Tabernaemon-tana divaricata in rats. METHODS: The anti-fertility activity of the extracts was evaluated using two experimental animal models: 1) Estrogenic activity was carried out in immature female rats using ethinyl estradiol as standard. The evaluation parameters include changes in uterine weight and histopathology of uterus. 2) Anti-implantation and early abortifacient activity was performed in female Wistar rats. number of implants and resorbtions were compared to vehicle control. RESULTS: Phytochemical analysis of MeTD and AqTD revealed the presence of carbohydrates, amino acids, steroids, glycosides, flavonoids, alkaloids and tannins. In estrogenic activity, the MeTD and AqTD were offered significant estrogen-like activity at 500 mg kg-1, poby increasing the uterine weight com-pared to vehicle control group. In Anti-implantation and early abortifacient activity study, MeTD (500 mg? kg-1, po) showed significant effect and it was evident by decreasing in the number of implants and increase in the number of resorbtions compared to vehicle control group. CONCLUSION: The MeTD at 500 mg? kg-1, popossess significant estrogenic, anti-implantation and early abortifacient activ-ity, while the AqTD at 500 mg? kg-1, powas found to possess significant estrogenic activity and the results are in consistent with the literature reports related to anti-fertility effect of flower extracts of Tabernaemontana divaricata.