Fentora is a pain-relief medication that used the buccal tablet delivery method to deliver Fentanyl Buccal, an opioid analgesic, first synthesized by Janssen Pharmaceutical in the late 1950s. It is eighty times more potent than morphine, which is sometimes called synthetic heroin. This medication is used to treat moderate-to-severe sudden breakthrough cancer pain in those patients who may have become opioid-tolerant.
The FDA has approved Fentora A to treat cancer pain, but it is often prescribed for off-label uses, which, while legal, can sometimes prove to be dangerous, especially when Fentanyl is combined with other drugs. Some physicians prescribe Fentora for headaches.
Fentora is highly addictive making it an easy drug to abuse. It has the same addictive qualities as heroin, opium, and morphine. As a result, too often it is prescribed not for medical reasons but rather for other reasons.
Adverse Fentora® Side Effects
There are a number of side effects associated with the Fentora® including:
- Constipation
- Dizziness
- Drowsiness
- Lightheadedness
- Nausea
- Headache
- Vomiting
- Rash
- Hives
- Itching
- Trouble breathing
- Blurred vision
- Chest pain
- Fainting
- Confusion
- Irregular/slow heartbeat
- Shortness of breath
- Stomach pain
- Tightness in the chest
- Trouble urinating
Fentora® Studies and the FDA
To prevent serious side effects or death, the directions for using Fentora must be followed exactly. The FDA has requested the manufacturer of Fentora, to update the label and medication guide including additional information on the safe use of Fentora.
Key Safety Information on Fentora®:
- Don’t use Fentora® in opioid non-tolerant patients
- Use Fentora only for labeled indications
Fentora® is not a generic version of Actiq. - Follow dosing instructions carefully:
When used for breakthrough pain patients shouldn’t take more than two Fentora® tablets per breakthrough episode
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Cases likely to be referred.

Do not stop taking a prescribed medication without first consulting your doctor. Discontinuing a prescribed medication without your doctor’s advice can result in injury or death.