What is the effective period of progestogens or progestogen:estrogen combinations as a contraceptive method?

What is the effective period of progestogens or progestogen:estrogen combinations as a contraceptive method?
  1. 7 days
  2. 21 days
  3. 72 hours
  4. Much longer than 21 days

Solution

The effective periods of progestogens or progestogen:estrogen combinations as a contraceptive method are much longer than 21 days.

Asked in: NCERT

Practice more Reproductive Health questions on Aicharya