March 2, 2015
The morning-after pill may not be effective for women over a certain weight.
HRA Pharma scientists have discovered Norlevo, an emergency contraceptive manufactured in Europe, loses it effectiveness when women reach 165 pounds. It is completely ineffective in women who weigh more than 176 pounds.
Norlevo will come with a new label in 2014, warning that the pill may not be effective for women over a certain weight.
Norlevo is identical to America's morning-after pill, Plan B One-Step. The Food and Drug Administration says it is reviewing information on the issue and will determine if any labeling changes on Plan B are warranted.