If you are inclined to order medications online, you may want to think again.

The U.S. DEA issued a public safety alert, saying it has found websites in the Dominican Republic and India that have been working with drug traffickers to sell pills made with fentanyl and meth. But, the sites claim to be legitimate, based in the U.S. or approved by the FDA.

A warning was also issued by the CDC about a “potential public health risk” from ordering what appear to be prescription medications from online pharmacies.