Facebook CEO Mark Zuckerberg has said the scope of the opioid crisis was what surprised him most during his 2017 travels throughout the country.
But all he had to do was look at Facebook to see how pervasive the marketing is for these powerful and addictive pain medications.
Sellers here and overseas are using Facebook pages and videos to offer drugs that U.S. laws say require a prescription, CNBC has found.
Searching on Facebook for the names of some of the most commonly prescribed pain medications pointed to multiple vendors selling Oxycodone, Hydrocodone, Percocet and other similar drugs.
This illicit marketing persists three months after NBC News highlighted the problem, and weeks after President Donald Trump declared opioid addiction a public health emergency.