Fentanyl is a very potent opioid pain reliever. A few grains can be enough to kill you.Pharmaceutical grade Fentanyl is usually used in a hospital setting. A doctor can also prescribe it to help control severe pain.For medical purposes, you may take prescribed fentanyl in the form of skin patches or injections. In non-pharmaceutical fentanyl made in a lab in China and smuggled acr...
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