Oxycodone Drug Profile

What is Oxycodone?

Oxycodone is a semi-synthetic opioid analgesic derived from thebaine, an alkaloid found in opium poppies. It belongs to the class of medications known as opioid analgesics and is primarily prescribed for the management of moderate to severe pain. This controlled substance is available in both immediate-release and extended-release formulations for different pain management needs.

Uses

Oxycodone is prescribed for several pain management conditions:

• Post-surgical pain: Management of acute pain following surgical procedures when other pain medications are insufficient
• Cancer-related pain: Treatment of moderate to severe pain associated with cancer and cancer treatments
• Chronic pain conditions: Long-term management of persistent pain when continuous opioid therapy is appropriate
• Injury-related pain: Treatment of severe pain from traumatic injuries, fractures, or serious wounds
• Breakthrough pain: Management of sudden episodes of severe pain in patients already receiving opioid therapy

How it works

Oxycodone works by binding to opioid receptors in the brain, spinal cord, and other areas of the body, particularly the mu-opioid receptors. This binding action blocks pain signals from reaching the brain and alters the perception of pain. The medication also affects the brain’s reward pathways, which contributes to both its pain-relieving effects and its potential for dependence and abuse.

Side effects

Common side effects include:

Submit Your Paper

• Drowsiness and sedation
• Constipation
• Nausea and vomiting
• Dizziness
• Dry mouth
• Headache
• Sweating
• Loss of appetite

Serious side effects requiring immediate medical attention:

• Respiratory depression (slow or difficult breathing)
• Severe allergic reactions with swelling or rash
• Signs of overdose including extreme drowsiness or loss of consciousness
• Chest pain or irregular heartbeat
• Severe abdominal pain or bowel obstruction

Warnings and precautions

• High abuse potential: Oxycodone is a Schedule II controlled substance with significant potential for addiction, abuse, and misuse, which can lead to overdose and death
• Respiratory depression risk: Can cause life-threatening respiratory depression, especially when combined with alcohol or other central nervous system depressants
• Pregnancy considerations: Classified as pregnancy category B, but prolonged use during pregnancy can cause neonatal withdrawal syndrome in newborns
• Kidney and liver impairment: Dosage adjustments may be necessary in patients with hepatic or renal dysfunction
• Elderly patients: Increased sensitivity and higher risk of adverse effects in older adults, requiring careful monitoring and potential dose reduction

Interactions

Oxycodone has numerous significant drug interactions:

• Benzodiazepines: Increased risk of severe sedation, respiratory depression, and death when combined
• Alcohol: Dangerous enhancement of central nervous system depression effects
• MAO inhibitors: Can cause severe and potentially fatal reactions including serotonin syndrome
• Muscle relaxants: Additive sedative effects increasing risk of respiratory depression
• Antihistamines: Enhanced drowsiness and respiratory depression risk
• CYP3A4 inhibitors: Medications like ketoconazole can increase oxycodone levels and toxicity
• CYP3A4 inducers: Drugs like rifampin can decrease oxycodone effectiveness
• Serotonergic medications: SSRIs and SNRIs may increase risk of serotonin syndrome

Check interactions with the GMJ Interaction Checker

Dosage

Oxycodone dosage varies significantly based on the patient’s pain severity, previous opioid exposure, and individual response. For opioid-naive adults, immediate-release formulations typically start at 5-15 mg every 4-6 hours as needed for pain. Extended-release formulations usually begin at 10 mg every 12 hours. Maximum daily doses can range from 60-400 mg depending on the patient’s tolerance and medical condition. Dosage should always be individualized and determined by a healthcare provider, starting with the lowest effective dose and adjusting based on response and tolerance.

Sources: FDA DailyMed drug labels (public domain), BNF, WHO Essential Medicines List. This article is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before starting or stopping any medication.

This work is licensed under Creative Commons Attribution 4.0 International (CC BY 4.0). You are free to share and adapt this content with attribution to GMJ News (news.gmj.ge).