When Is The Best Time To Take Plan B

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Plan b should be taken within 72 hours of unprotected intercourse. Your pharmacist can tell you when to take it based on the time that the pill is effective. The sooner you take plan b, the more likely it will work. If you miss a dose, however, use a second one as soon as possible to make up for your missed dose and continue taking plan b until at least 72 hours after last having sex with a man who might have been exposed to HIV.