A new wave of concern has spread across the United States over multi-colored "rainbow fentanyl" pills, powders and blocks -- that look similar to candy or sidewalk chalk -- being sold and used in ...

What is rainbow fentanyl? Colorful pills drive new warnings about deadliest drug in the US A new wave of concern has spread across the United States over multi-colored "rainbow fentanyl" pills, ...

This multi-colored fentanyl may appeal to young people or fool them into thinking it's safe, but experts say illicit fentanyl has been hiding in what appears to be other products for a long time, and ...