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Home > Drugs > Opioids (narcotic analgesics) > Oxycodone > Oxycodone: 7 things you should know
Opioids (narcotic analgesics)
https://themeditary.com/patient-tips/oxycodone-5253.html

Oxycodone: 7 things you should know

Drug Detail:Oxycodone (Oxycodone [ ox-i-koe-done ])

Drug Class: Opioids (narcotic analgesics)

Contents
Uses Warnings Before Taking Dosage Side effects Interactions FAQ

1. How it works

  • Oxycodone is a morphine-like, strong pain-relieving medicine used for the relief of severe pain that is unresponsive to less potent pain-relieving medicines (analgesics).
  • Oxycodone is relatively selective for the mu opioid receptor, although it may bind to other opioid receptors at higher dosages. Oxycodone is a full agonist at the mu receptor (full agonists have a larger effect at higher dosages).
  • Oxycodone belongs to the group of drugs known as opioids or opioid analgesics. Oxycodone may also be called a narcotic analgesic.

2. Upsides

  • Effective against moderate-to-severe pain, including cancer-related pain.
  • Longer-lasting (extended-release) tablets are available (brand name OxyContin).
  • Oxycodone is also available in combination with acetaminophen, ibuprofen, or aspirin for added pain control.
  • Oxycodone is less likely to cause an itchy rash compared to other opioids such as morphine.
  • Oxycodone does not have a ceiling effect for analgesia, which means that if a person finds that oxycodone is no longer controlling their pain, a higher dosage should provide pain relief. However, the risk of side effects, such as respiratory and CNS depression, increases with higher dosages of oxycodone.
  • Generic oxycodone is available.

3. Downsides

If you are between the ages of 18 and 60, take no other medication or have no other medical conditions, side effects you are more likely to experience include:

  • Sedation that may impair your reaction skills and affect your ability to drive or operate machinery. Avoid alcohol as the combination can lead to dangerous or fatal side effects.
  • Other common side effects include constipation, dizziness, nausea, vomiting, and confusion. This can lead to low blood pressure, which may increase the risk of falls. May cause flushing, red eyes, sweating, and an itchy rash (although less likely to cause an itchy rash than some other opioids).
  • Oxycodone should be reserved for more severe types of pain, such as that caused by cancer. Oxycodone can be habit-forming (addictive), even at regular doses. It has a high abuse potential, and personal legitimate supplies of oxycodone may be sought out by drug seekers.
  • Respiratory depression (slow and shallow breathing), which may be fatal or life-threatening can occur with oxycodone use. The risk is greatest during the first 24 to 72 hours after drug initiation or after a dosage increase. Children, the elderly, the frail, or those with pre-existing respiratory disease are more at risk.
  • The dosage of oxycodone may need to be reduced in people with kidney or liver disease.
  • Oxycodone interacts with several other drugs, including those that inhibit or induce hepatic enzymes, particularly CYP3A4 or CYP2D6 (such as erythromycin, ketoconazole, ritonavir); depress the CNS (such as benzodiazepines, muscle relaxants, antipsychotics); have partial agonist or mixed effects on opioid receptors (such as buprenorphine, pentazocine); diuretics; with anticholinergic effects; and monoamine oxidase inhibitors.
  • Interaction or overdosage may also cause serotonin syndrome. Symptoms include mental status changes such as agitation, hallucinations, coma, delirium, fast heart rate, dizziness, flushing, muscle tremor or rigidity, and stomach symptoms (including nausea, vomiting, and diarrhea).
  • Abrupt discontinuation of oxycodone in a person who has become physically dependent on it may lead to a withdrawal syndrome and symptoms such as restlessness, pupil dilation, watery eyes and a runny nose, sweating, muscle aches, insomnia, irritability, and gastrointestinal complaints. Babies born to mothers who are physically dependent on oxycodone will also be physically dependent.
  • Not for use in patients with severe asthma or other breathing problems, or a blockage in the stomach or intestines.
  • Long-term use of oxycodone also affects the endocrine system, which may cause symptoms such as sexual dysfunction, an absence of periods, or infertility.

Note: In general, seniors or children, people with certain medical conditions (such as liver or kidney problems, heart disease, diabetes, seizures) or people who take other medications are more at risk of developing a wider range of side effects. View complete list of side effects

4. Tips

  • Oxycodone may be taken with or without food.
  • Take oxycodone exactly as directed by your doctor. Do not take more than prescribed unless advised to do so by your doctor. The effective dosage for pain relief varies significantly from person to person. Over time, your dosage may need adjusting, especially if you find that your pain is no longer being controlled. Talk to your doctor if this happens.
  • If you take oxycodone extended-release tablets, swallow them whole. Do not chew, break, divide, crush, or dissolve the tablets.
  • Avoid alcohol while taking this medicine; fatal breathing problems may occur.
  • Oxycodone may cause sedation which may impair your reaction skills and affect your ability to drive or operate machinery. Do not drive or operate machinery if oxycodone impairs you in this way.
  • Withdrawal symptoms (muscle and bone pain, diarrhea, insomnia, vomiting) may occur if long-term oxycodone is stopped abruptly. Your doctor will advise you on how to discontinue oxycodone slowly if you need to stop taking it.
  • Do not use during pregnancy and breastfeeding unless specifically recommended by your doctor.
  • Oxycodone may cause constipation which can be relieved with laxatives. Nausea or vomiting caused by oxycodone may be treated with antiemetics. Talk to your doctor if you experience any troublesome side effects.
  • May lower blood pressure on standing. Take your time when going from a lying down to a standing position.
  • Avoid grapefruit juice, grapefruit products, Seville oranges (used to make orange marmalade), and tangelos (a tangerine-grapefruit cross) due to possible food-drug interactions.
  • Keep this medicine in a safe place and out of the reach of children and pets. Accidental ingestion of even one dose of OxyContin (extended-release oxycodone), especially by children, can result in a fatal overdose of oxycodone.

5. Response and effectiveness

  • For immediate-release formulations of oxycodone, peak concentrations are reached within 1-2 hours and the duration of effect is approximately 3-4 hours.
  • Extended-release formulations of oxycodone (Oxycontin) last for 12 hours. Longer-acting formulations of oxycodone should not be initiated without a trial of shorter-acting formulations first.
  • Side effects (such as nausea, vomiting, and respiratory depression) are more likely with higher dosages of oxycodone; however, long-term users of oxycodone may develop a tolerance to these effects.

6. Interactions

Medicines that interact with oxycodone may either decrease its effect, affect how long it works, increase side effects, or have less of an effect when taken with oxycodone. An interaction between two medications does not always mean that you must stop taking one of the medications; however, sometimes it does. Speak to your doctor about how drug interactions should be managed.

Common medications that may interact with oxycodone include:

  • antibiotics, such as clarithromycin and erythromycin
  • antidepressants, such as tricyclic antidepressants (eg, amitriptyline), monoamine oxidase inhibitors (eg, isocarboxazid, phenelzine, and tranylcypromine), or SSRIs (eg, fluoxetine, sertraline)
  • antifungal agents, such as itraconazole and ketoconazole
  • anticonvulsants, such as carbamazepine, phenytoin, phenobarbital, or primidone
  • antipsychotics (such as butyrophenones, phenothiazines, or thioxanthenes) and atypical antipsychotics (eg, olanzapine, quetiapine, ziprasidone)
  • any medication that may cause drowsiness, such as benzodiazepines (eg, diazepam, lorazepam), first-generation antihistamines (such as doxylamine or promethazine), metoclopramide, or opioids (such as codeine, morphine)
  • buprenorphine
  • migraine medications, such as almotriptan, eletriptan, or sumatriptan
  • muscle relaxants, such as cyclobenzaprine
  • rifampin
  • any other medication that inhibits hepatic enzymes CYP3A4 or CYP2D6 or induces CYP3A4.
  • other medications that affect serotonin, such as amphetamines, fentanyl, lithium, tramadol, triptans (eg, almotriptan, eletriptan, or sumatriptan), or St. John's Wort.

Avoid grapefruit products and drinking alcohol or taking illegal or recreational drugs while taking oxycodone.

Note that this list is not all-inclusive and includes only common medications that may interact with oxycodone. You should refer to the prescribing information for oxycodone for a complete list of interactions.

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