fentanyl test strips

What makes fentanyl so dangerous? Due to its potency, a relatively small amount of fentanyl can be deadly. Just two milligrams can cause overdose or death. It’s very powerful and can be addictive. Fentanyl cannot be smelled or tasted, making it nearly impossible to tell if drugs contain or have been laced with the opioid without special fentanyl test strips.