Palliative care for adults: strong opioids for pain relief

Please tell me more about strong opioids for pain relief.

Can you tell me more about the side effects or risks associated with taking strong opioids?

Will I become addicted to strong opioids?

How long will it take for this medication to work?

What do I do if I am still in pain after taking strong opioids?

What are my options for taking some other type of pain relief?

Can you give me some written material (a leaflet) about strong opioid treatment?