Erythropoietin, aka EPO, is best known for its role in the Lance Armstrong cheating scandal. But EPO is also the star of ...

The FDA doesn’t regulate dietary supplements such as EPO. More research is also needed to determine if it’s safe to use in the long term. But when used in the short term, it’s likely safe.

However, it may have a blood-thinning effect, so its use is discouraged among people who take blood thinners. Evening primrose oil (EPO) may decrease the frequency and severity of night sweats.

spend the second half of his title reign dodging rumors of EPO use (mostly from this rival). The effects of EPO are so ...

In 2001, Dr. Ferrari told Armstrong that he could disguise his EPO use from being detected in tests by micro-dosing and sleeping in an altitude tent, which would "boost the natural production of ...