Prescription medicines can play an important role in the management of pain, anxiety, muscle spasms and other medical conditions. However, medicines that affect the central nervous system require careful use because some can cause drowsiness, dependence, withdrawal symptoms and potentially serious interactions with other medicines.
This guide provides general information about several prescription medicines, including opioid painkillers such as oxycodone, oxymorphone, tramadol and codeine, as well as benzodiazepines such as diazepam.
Important: This article is for general educational purposes and does not replace advice from a doctor or pharmacist. Prescription medicines should always be used exactly as directed by a qualified healthcare professional.
What are opioid painkillers?
Opioids are medicines that act on opioid receptors in the nervous system to reduce the perception of pain. They may be prescribed for moderate to severe pain when other treatment options are not sufficient.
Examples include oxycodone, oxymorphone, tramadol and codeine.
Although opioids can provide effective pain relief, they can also cause side effects and may lead to tolerance, physical dependence or addiction, particularly with prolonged use.
Patients should therefore follow their prescribed treatment carefully and speak with their doctor if they have concerns about their medicine.
Oxycodone and severe pain
Oxycodone is a strong opioid analgesic that may be prescribed for severe pain. It works by changing the way the brain and nervous system respond to pain signals.
Patients looking for additional educational information can read our pages about OxyContin 20mg and OxyContin 40mg.
Oxycodone can cause side effects such as nausea, constipation, dizziness and drowsiness. More serious effects can include respiratory depression, particularly if excessive amounts are taken or if oxycodone is combined with other medicines that cause sedation.
Patients should never increase their prescribed dose without first speaking with their prescriber.
Understanding oxymorphone
Oxymorphone is another opioid analgesic used in the treatment of certain types of severe pain.
Our Opana 5mg information page provides additional information about this medicine, including its general uses and important safety considerations.
Opioid medicines can vary considerably in their potency and pharmacological properties. For this reason, one opioid should not be substituted for another without professional medical guidance.
Tramadol for pain management
Tramadol is an opioid analgesic that may be prescribed for moderate to severe pain. Unlike some other opioids, tramadol also affects certain neurotransmitters in the nervous system.
You can learn more about Tramadol 50mg and its general safety considerations on our website.
Common side effects may include dizziness, nausea, constipation and sleepiness. Tramadol can also interact with various medicines, including some antidepressants.
It is particularly important not to combine tramadol with other opioid-containing medicines unless a healthcare professional has specifically advised you to do so.
Codeine and co-codamol
Codeine is an opioid medicine that can be prescribed for certain types of pain. It is also found in combination medicines such as co-codamol.
For further information, see our pages covering Codeine Phosphate 30mg and Co-codamol 30/500mg.
Co-codamol contains two active ingredients: codeine and paracetamol. The combination may be used when pain relief from a single medicine is insufficient.
Because co-codamol contains paracetamol, patients should take care not to accidentally take additional medicines containing paracetamol unless advised to do so by a healthcare professional. Taking too much paracetamol can cause serious liver damage.
Codeine can also cause drowsiness, constipation and dependence, particularly when used for extended periods.
What is diazepam?
Diazepam belongs to a group of medicines known as benzodiazepines. Depending on the clinical circumstances, it may be prescribed for conditions including anxiety, muscle spasms and certain types of seizures.
Our website provides additional information about Bensedin Diazepam 10mg and Diazepam Actavis 10mg.
Diazepam can cause drowsiness, reduced alertness and impaired coordination. Benzodiazepines can also cause tolerance and physical dependence, particularly when taken regularly for an extended period.
For this reason, people who have been taking diazepam regularly should not stop treatment suddenly without discussing it with their doctor. A healthcare professional may recommend gradually reducing the dose to minimise withdrawal symptoms.
Why opioid and diazepam combinations require caution
One of the most important safety considerations is the combination of opioids with benzodiazepines such as diazepam.
Both types of medicine can depress activity in the central nervous system. When taken together, their sedative effects may be increased, potentially causing profound sedation, respiratory depression, coma or death.
Patients should therefore inform their doctor or pharmacist about all medicines they are taking before starting a new prescription.
This includes prescription medicines, over-the-counter medicines, sleeping tablets, sedatives and supplements.
Can different painkillers be taken together?
Not all painkillers are suitable for use together.
For example, tramadol and codeine are both opioid medicines. Taking multiple opioid medicines without appropriate medical supervision can increase opioid exposure and the risk of adverse effects.
Similarly, patients taking co-codamol need to remember that it already contains paracetamol.
Before combining medicines, always check with a doctor or pharmacist.
Alcohol and prescription medicines
Alcohol can increase the sedative effects of medicines such as opioids and diazepam.
Combining alcohol with medicines that cause drowsiness may increase impairment and can potentially increase the risk of dangerous central nervous system depression.
Patients taking opioid painkillers or benzodiazepines should therefore discuss alcohol consumption with their healthcare professional and follow the advice provided with their medicine.
Dependence, tolerance and withdrawal
Dependence can occur with several medicines discussed in this article.
Physical dependence means that the body has adapted to a medicine. If treatment is suddenly stopped, withdrawal symptoms may occur.
Opioids can lead to tolerance and dependence with continued use. Benzodiazepines such as diazepam can also cause dependence, even when taken at therapeutic doses.
Anyone who has been using an opioid or benzodiazepine regularly should speak with a healthcare professional before stopping treatment.
Recognising potentially serious side effects
People taking opioid or sedating medicines should be aware of symptoms that require urgent medical attention.
Seek emergency medical assistance if someone taking these medicines:
- Becomes extremely difficult to wake
- Loses consciousness
- Develops slow, shallow or difficult breathing
- Becomes severely confused or unresponsive
- Shows signs of a suspected overdose
Respiratory depression is one of the most serious risks associated with excessive opioid exposure and can be particularly dangerous when opioids are combined with other central nervous system depressants.
Tips for safer use of prescription medicines
Patients can reduce avoidable risks by following several basic precautions:
- Take prescription medicines exactly as directed.
- Never increase the dose without professional medical advice.
- Do not share prescription medicines with other people.
- Tell your doctor or pharmacist about all medicines you are taking.
- Avoid combining opioids or sedatives unless specifically instructed to do so.
- Do not suddenly stop regularly used opioids or benzodiazepines without medical advice.
- Read the patient information leaflet supplied with your medicine.
- Store medicines safely and away from children.
- Contact a healthcare professional if you experience unexpected or severe side effects.
Frequently asked questions
Can diazepam be taken with an opioid painkiller?
Only when specifically prescribed or approved by an appropriate healthcare professional. Combining diazepam with opioids can increase sedation and the risk of respiratory depression.
Can tramadol be taken with codeine?
Patients should not combine tramadol and codeine unless their doctor or pharmacist has specifically advised them to do so. Both medicines have opioid effects, which can increase the risk of adverse effects when combined.
Does co-codamol contain an opioid?
Yes. Co-codamol contains codeine, an opioid analgesic, together with paracetamol.
Can prescription opioids cause dependence?
Yes. Opioids can cause tolerance and physical dependence, particularly when used regularly or for prolonged periods. Some people may also develop opioid use disorder or addiction.
Can diazepam cause dependence?
Yes. Diazepam belongs to the benzodiazepine group, which can cause tolerance and dependence. Anyone who has been taking diazepam regularly should seek medical advice before stopping treatment.
Conclusion
Prescription painkillers and medicines such as diazepam can have an important role in appropriate medical treatment. However, they must be used responsibly and according to professional medical advice.
Understanding how medicines work, recognising potential interactions and being aware of serious side effects can help patients use their prescribed treatment more safely.
If you have questions about your medicine, dosage, possible interactions or stopping treatment, speak with your doctor or pharmacist rather than changing your treatment yourself.
Medical disclaimer: The information provided in this article is for general educational purposes only. It does not constitute medical advice, diagnosis or treatment. Always follow the instructions provided by your prescribing healthcare professional and the official patient information leaflet supplied with your medicine.
