Combining Morning-After Pill With Another Common Drug Makes It More Effective

  • Combining the two drugs prevented 30% more pregnancies
  • Piroxicam is widely available and has few side effects

A PlanB one-step contraceptive tablet.

Photographer: Justin Sullivan/Getty Images
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Emergency contraceptive pills like Plan B are more effective when taken together with a common anti-inflammatory drug called piroxicam, a new study finds.

Combining piroxicam, typically used to treat arthritis, with levonorgestrel prevented roughly 30% more pregnancies than the emergency contraceptive taken by itself, according to research from the University of Hong Kong. The study was published Wednesday in The Lancet.