Morning-After Pills Less Effective For Women Who Weigh Over 165 Pounds, Study Suggests.

https://www.washingtonpost.com/national/health-science/do-you-weigh-more-than-165-pounds-that-morning-after-pill-may-not-work-so-well/2016/07/22/0a309f92-5038-11e6-a7d8-13d06b37f256_story.html I think the drug being lipid soluble is getting stored in the fat cells.