Actiq (generic: fentanyl) is a prescription medication used to treat breakthrough cancer pain. Actiq belongs to a group of drugs called opioids that work by binding to opioid receptors within the central nervous system to relieve pain.
The medication comes in the form of a lozenge.
Some of the common side effects of Actiq include nausea (upset stomach), vomiting, dizziness, and sleepiness. Actiq can reduce physical or mental abilities; patients must be careful when performing task which require mental alertness.