Medication leaflets

Active substance

Results for the substance fentanyl

20 results

About this active substance


Fentanyl is a very potent opioid analgesic used to treat severe pain, especially in cancer patients or after major surgeries. It acts quickly and effectively, often being prescribed when other painkillers are no longer sufficient. Fentanyl is administered as transdermal patches, injections, or sublingual tablets, depending on the patient's needs.

The dosage and method of administration of fentanyl are strictly determined by the doctor, as this medication has a high potential for dependence and overdose. It is essential to follow medical instructions carefully and not to change the dose without your doctor's approval.

Common side effects of fentanyl include drowsiness, dizziness, nausea, constipation, and confusion. In severe cases, it can cause respiratory depression, loss of consciousness, or even death, especially if used incorrectly or in combination with other substances that depress the central nervous system.

Fentanyl is an essential medication for controlling severe pain, but it requires careful monitoring and responsibility from both the patient and the medical team. Do not share this medication with others and keep it in a safe place, away from children or unauthorized persons.