In those studies he observed and described the contraceptive effect of medroxiprogesterone (MPA).

Miglustat showed no contraceptive effect in other mammals.

The contraceptive effect of 'suckling' is neutralised to a large extent if a bull is running with the cows.

The abortion debate, and consumers' growing concerns about contraceptive side effects have contributed to the pharmaceutical industry's reluctance to join the field.

The contraceptive effect of condoms is limited to the time of use.

Do its contraceptive effects apply to immaculate conception?

To test the vaccine's contraceptive effect, it was essential to know which deer were vaccinated and which of those produced fawns.

These intra-uterine devices would have had a contraceptive effect and were relied on by some women for that purpose.

Some species of the herb also may have narcotic and contraceptive effects.

The compound causing the contraceptive effect was determined to be gossypol.