1st March 2024

A 19-year-old woman, who weighs 56 kg, presents to the GP appearing in distress.

A 19-year-old woman, who weighs 56 kg, presents to the GP appearing in distress. She explains that she had unprotected sexual intercourse around four days ago (or 96 hours), and is now extremely worried she will become pregnant. She reveals she did not come to the GP sooner due to fear of being judged. 

Prescribe one drug and its dosage, which can be taken orally, that will decrease the chance of this woman becoming pregnant: