Fentanyl is a synthetically produced opioid drug that is prescribed as a painkiller. It can be safely administered by healthcare professionals to patients who are experiencing constant severe pain and is often used to treat terminal cancer patients. Prescribed fentanyl

Codeine is a prescription narcotic painkiller medication that is used for moderate pain relief. Codeine can also be found (in small amounts) in some cough medicines. Although this doctor-prescribed medication is given as a painkiller with a specific dose and uses