USA Today: Mexican company selling adulterated dietary supplements can't be found

GUADALAJARA, Mexico — Looking into a company masquerading adulterated pharmaceuticals as miracle dietary supplements branded Reumofan, USA Today investigative journalists traveled as far as Mexico to find those responsible. 

What they found were fake addresses, misleading ingredient lists and no trace of the parent company. 

The supplements were marketed as a natural treatment for arthritis and joint pain. However, the supplements were adulterated with as many as three pharmaceutical ingredients, including a corticosteroid. 

"Historically, drug-tainted supplements have been found most often among pills and powders sold for bodybuilding, weight loss and sexual enhancement," USA Today wrote. "But the [Food and Drug Administration] says it is seeing the dangerous practice showing up in supplements used by the growing population of aging Americans."