Fentanyl side effects

Get emergency medical help if you have signs of an allergic reaction to fentanyl: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Like other narcotic medicines, fentanyl can slow your breathing. Death may occur if breathing becomes too weak. A person caring for you should seek emergency medical attention if you have slow breathing with long pauses, blue colored lips, or if you are hard to wake up.

Fentanyl may cause serious side effects. Call your doctor at once if you have:

• slow heart rate, sighing, shallow breathing, breathing that stops during sleep;
• severe drowsiness, feeling like you might pass out;
• confusion, extreme fear, unusual thoughts or behavior; or
• low cortisol levels – nausea, vomiting, loss of appetite, dizziness, worsening tiredness or weakness.

Seek medical attention right away if you have symptoms of serotonin syndrome, such as: agitation, hallucinations, fever, sweating, shivering, fast heart rate, muscle stiffness, twitching, loss of coordination, nausea, vomiting, or diarrhea.

Serious side effects may be more likely in older adults and those who are malnourished or debilitated.

Long-term use of opioid medication may affect fertility (ability to have children) in men or women. It is not known whether opioid effects on fertility are permanent.

Common fentanyl side effects may include:

• headache, dizziness, drowsiness, pale skin, feeling weak or tired
• constipation, nausea, vomiting, stomach pain or
• sleep problems (insomnia)
• swelling in your hands or feet
• increased sweating, or cold feeling
• for patches itching, redness, or rash where a patch was worn.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect fentanyl?

You may have breathing problems or withdrawal symptoms if you start or stop taking certain other medicines. Tell your doctor if you also use an antibiotic, antifungal medication, heart or blood pressure medication, seizure medication, or medicine to treat HIV or hepatitis C. Buy fentanyl online

Fentanyl can interact with many other drugs and cause dangerous side effects or death. Be sure your doctor knows if you also use:

• other narcotic medications – opioid pain medicine or prescription cough medicine;
• a sedative like Valium – diazepam, alprazolam, lorazepam, Ativan, Klonopin, Restoril, Tranxene, Versed, Xanax, and others;
• drugs that make you sleepy or slow your breathing – a sleeping pill, muscle relaxer, tranquilizer, antidepressant, or antipsychotic medicine;
• cold or allergy medicines, bronchodilator asthma/COPD medication, or a diuretic (“water pill”);
• medicines for motion sickness, irritable bowel syndrome, or overactive bladder;
• drugs that affect serotonin levels in your body – medicine for depression, Parkinson’s disease, migraine headaches, serious infections, or prevention of nausea and vomiting.

This list is not complete. Other drugs may interact with fentanyl, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide. Buy fentanyl online