This website has been provided by Kyowa Kirin International NewCo Ltd, known as Grünenthal Meds, for the general public. It is for people taking an opioid who are experiencing constipation symptoms.

Are you taking a strong painkiller and feeling constipated?

Take this short questionnaire to record helpful information to discuss with your doctor. This questionnaire takes less than 5 minutes to complete and is for people who are taking strong painkillers known as opioids, and think they may be experiencing constipation and constipation-related symptoms.

This website is for people who are experiencing constipation and constipation-related symptoms, and are also taking strong painkillers known as opioids.

Opioids are a type of strong painkiller prescribed by a doctor for severe pain. Like all medicines, opioids can cause side effects. Opioids are a specific cause of constipation in about 8 out of 10 people who take them long-term for pain. This is called opioid induced constipation, which is often shortened to "OIC". 

Opioids can also cause other side effects too. This website is about OIC and constipation-related symptoms, including the impact they can have on mental wellbeing and quality of life, but you should also let your doctor or nurse know if you think you are experiencing other side effects of opioids or any other medicines.

"Am I taking an opioid?"

Check to see if the painkiller you are taking is an opioid.

If your painkiller medicine is listed below then you are taking an opioid:

  • Codeine (including Co-codamol)
  • Tramadol
  • Fentanyl
  • Morphine
  • Dihydrocodeine
  • Methadone
  • Oxycodone

The above are examples of opioids commonly prescribed for pain, but you may know them by a different name (the brand name).

If you're not sure if you are taking an opioid, check with your doctor, nurse or pharmacist, or read the leaflet that comes with your medicine.

"Might I be experiencing opioid induced constipation?"

Use this short questionnaire to provide helpful information to your doctor.

A short video guide to opioid-induced constipation

What is your current situation with opioids?

Your doctor or nurse is the best person to talk to about opioid induced constipation (OIC).