Fentanyl is part of a group of drugs known as Opioids. Opioids interact with opioid receptors in the brain and elicit a range of responses within the body; from feelings of pain relief, to relaxation, pleasure and contentment. It is prescribed in the event of chronic, severe pain as a result of cancer, nerve damage, back injury, major trauma and surgery.

It is about 80 to 100 times stronger than morphine.

Fentanyl is available in many forms. Pharmaceutical fentanyl is used for managing acute or chronic pain. Illicit fentanyl can be manufactured for use in the illegal drug market.

Fentanyl Dangerous Signs & Naloxone

Dangerous Signs

If the dose is too high, you might overdose. If you have any of these symptoms, call an ambulance straight away by dialing 999 or 112:

  • Chest pain
  • Slowed breathing
  • Bluish lips and complexion
  • Seizure
  • Passing out
  • Coma
  • Death


Naloxone reverses the effects of opiates (including fentanyl), in the case of an overdose. Naloxone can be injected intravenously (into a vein) or intramuscularly (into a muscle) by medical professionals, such as paramedics.

Side Effects of

There is no safe level of drug use. Use of any drug always carries risk.

The effects of taking Fentanyl with other drugs including over-the-counter or prescribed medications can be unpredictable and dangerous.