How late can you take Plan B?
While Plan B can be taken up to 72 hours after unprotected relationship, its efficacy decreases with time, and it is best to take it as soon as possible.
Can I take Plan B after 4 days?
It’s best to take Plan B as soon as possible since it works best within the first three days. You can take it up to five days after unprotected relationship, but it won’t work as well by the fifth day. Once ingested, it’s only effective for a maximum of about five days.