Emergency Contraception (EC)

Preferred: Levonorgestrel (Plan B^®) 1.5 mg PO as a single dose.

Alternative: Levonorgestrel 0.75 mg PO bid x 2 doses if a single 1.5 mg dose is not likely to be tolerated. Dimenhydrinate 50 mg PO given 30 minutes before the second dose of levonorgestrel may prevent vomiting.

Notes:

• EC should be taken as soon as possible within 72 hours after exposure (efficacy declines after this, but some benefit may be achieved up to 120 hours after exposure).
• EC is contraindicated if there is evidence of an established pregnancy as confirmed by a positive pregnancy test.