Posted: May 25, 2017 at 7:02 am TIL that oral birth control extends the half life of caffeine, meaning that women on bc may have caffeine in their systems for 4 hours longer than typical. This may lead to anxiety, headaches, and increased heart rate. submitted by /u/BetterBeRavenclaw to r/todayilearned [link] [comments] Source: Reddit: TGIOKDI Upvoted Leave a Reply Cancel replyYou must be logged in to post a comment.