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The contraceptive ‘SAHELI’

is an IUD.
increases the concentration of estrogen and prevents ovulation in females.
blocks estrogen receptors in the uterus, preventing eggs from getting implanted.
is a post-coital contraceptive.
Explanation:

Saheli is the first non-steroidal, once a week pill. It contains centchroman and its functioning is based upon selective Estrogen Receptor modulation.
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