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Side Effects of Fentanyl Buccal Tablets

Common side effects of fentanyl buccal tablets include nausea, vomiting, and dizziness. While these side effects generally require little or no treatment, potentially serious problems are possible while taking this medication. If you experience more serious side effects, such as difficulty breathing, seizures, or hallucinations, notify your healthcare provider right away.

An Introduction to Side Effects of Fentanyl Buccal Tablets

As with any medicine, fentanyl buccal tablets (Fentora®) can cause side effects. However, not everyone who uses the medication will have problems. In fact, most people tolerate the medication quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider.
 
(This article covers many, but not all, of the possible side effects with fentanyl buccal tablets. Your healthcare provider can discuss a more complete list with you.)
 

Serious Fentanyl Buccal Tablets Side Effects

Some side effects are potentially serious and should be reported immediately to your healthcare provider. These include but are not limited to:
 
  • The urge to take more of the tablets than prescribed or for a non-medical purpose (see Fentora Abuse)
  • Any difficulty breathing, such as reduced, shallow, slow, or irregular breathing
  • Cold and clammy skin
  • A slow heart rate (bradycardia)
  • Extreme drowsiness
  • Feeling faint, extremely dizzy, or confused
  • Severe constipation
  • Unusual changes in behavior or mood, such as depression, hostility, agitation, or anxiety
  • Hallucinations (seeing or hearing things that are not really there)
  • Pain, irritation, or sores at the application site (the gum or inside of the cheek)
  • Thrush (a yeast infection of the mouth)
  • Signs of an allergic reaction, such as:
 
    • An unexplained rash
    • Hives
    • Itching
    • Swelling of the mouth or throat
    • Wheezing
    • Difficulty breathing.
 
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Fentanyl Buccal Tablet Information

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