VANTRELA ER is a strong prescription pain medicine that contains an opioid (narcotic) that is used to manage pain severe enough to require daily, around-the-clock, long-term treatment with an opioid when other pain treatments such as non-opioid pain medicines or immediate-release opioid medicines do not treat your pain well enough or you cannot tolerate them. A long-acting (extended-release) opioid pain medicine that can put you at risk for overdose and death. Even if you take your dose correctly as prescribed you are at risk for opioid addiction, abuse, and misuse that can lead to death. Not for use to treat pain that is not around-the-clock.

Side Effects Of Vantrela

The possible side effects of VANTRELA ER are:

  • constipation, nausea, sleepiness, vomiting, tiredness, headache, dizziness, abdominal pain. Call your healthcare provider if you have any of these symptoms and they are severe.

Get emergency medical help if you have:

  • trouble breathing, shortness of breath, fast heartbeat, chest pain, swelling of your face, tongue, or throat, extreme drowsiness, light-headedness when changing positions, feeling faint, agitation, high body temperature, trouble walking, stiff muscles, or mental changes such as confusion.

These are not all the possible side effects of VANTRELA ER. Call your doctor for medical advice about side effects.

Warnings & Precautions

Do not take VANTRELA ER if you have: severe asthma, trouble breathing, or other lung problems. a bowel blockage or narrowing of the stomach or intestines.

Before taking VANTRELA ER, tell your healthcare provider if you have a history of:

  • head injury,
  • seizures
  • liver,
  • kidney,
  • thyroid problems
  • urinating
  • pancreas or gallbladder problems
  • heart rhythm problems (long QT syndrome)
  • abuse of street or prescription drugs, alcohol addiction, or mental health problems.

Tell your healthcare provider if you are:

  • pregnant or planning to become pregnant. Prolonged use of VANTRELA ER during pregnancy can cause withdrawal symptoms in your newborn baby that could be life-threatening if not recognized and treated. breastfeeding. Not recommended during treatment with VANTRELA ER. It may harm your baby. taking prescription or over-the-counter medicines, vitamins, or herbal supplements. Taking VANTRELA ER with certain other medicines can cause serious side effects that could lead to death.
  • While taking VANTRELA ER DO NOT: Drive or operate heavy machinery, until you know how VANTRELA ER affects you. VANTRELA ER can make you sleepy, dizzy, or lightheaded. Drink alcohol or use prescription or over-the-counter medicines that contain alcohol. Using products containing alcohol during treatment with VANTRELA ER may cause you to overdose and die.

Dosage Of Vantrela

Do not change your dose. Take VANTRELA ER exactly as prescribed by your healthcare provider. Use the lowest dose for the shortest duration needed.

Take your prescribed dose every 12 hours, at the same time every day. Do not take more than your prescribed dose. If you miss a dose, take your next dose at your usual time.

Swallow VANTRELA ER whole. Do not cut, break, chew, crush, dissolve, snort, or inject VANTRELA ER because this may cause you to overdose and die.

Call your healthcare provider if the dose you are taking does not control your pain.


All information has been provided courtesy of MedLinePlus from the National Library of Medicine and from the FDA.