Can I take Morphine and Paracetamol together?

It is generally considered safe to take morphine and paracetamol together.

Paracetamol and morphine have different 'mechanisms of action' (the way they work in the body). Paracetamol works mainly in the central nervous system to reduce pain signals, while morphine attaches to specific 'opioid receptors' to block pain.

Because they don't interfere with each other's absorption or breakdown in the liver, they can be used safely at the same time.

How to take morphine and paracetamol safely

• Always ensure you do not exceed the maximum dose of paracetamol (usually 4000mg or 8x500mg tablets in 24 hours).

• Always follow the specific instructions for your morphine dosage.

• If you are taking a 'co-compound' medicine (such as Co-codamol), check if it already contains paracetamol before taking extra.

Asthma or breathing problems

Morphine can cause life-threatening breathing difficulties; do not take it if you have severe asthma or chronic obstructive pulmonary disease (COPD).

Liver disease or high alcohol intake

Taking more than the recommended dose of paracetamol, or taking it while drinking heavily, can cause fatal liver failure. Never take more than one product containing paracetamol at a time.

Opioid dependence and withdrawal

Morphine carries a high risk of addiction and dependence. Long-term use can lead to withdrawal symptoms if stopped suddenly; always follow a tapering schedule.

Opioid use with alcohol or sedatives

Mixing morphine with alcohol or benzodiazepines (sleeping pills) is extremely dangerous and can lead to fatal respiratory arrest or coma.

Alcohol

You must not drink alcohol while taking morphine. Alcohol can dangerously increase the sedative effects of morphine, leading to extreme sleepiness, breathing difficulties, and a potentially fatal overdose.

Some long-acting morphine capsules can also release the entire dose at once into your system if taken with alcohol (known as 'dose dumping').

It is best to avoid or strictly limit alcohol when taking paracetamol. Combining alcohol and paracetamol increases the risk of serious liver damage.

Taking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.

Disclaimer

This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.