Oxycodone G.L. (Oxycodone Hydrochloride)

Oxycodone Hydrochloride is an opioid that acts on the central nervous system to relieve pain in several clinical contexts.

• Acute postoperative pain: provides strong analgesia after surgical procedures.
• Cancer‑related pain: helps control persistent pain associated with malignant disease.
• Severe chronic non‑cancer pain: reduces pain intensity when other treatments have failed.
• Palliative care: improves comfort for patients with life‑limiting illnesses.

• Oxycodone binds selectively to µ‑mu‑opioid receptors in the brain and spinal cord, activating inhibitory G‑protein pathways that decrease neuronal excitability and reduce the transmission of nociceptive signals, resulting in analgesia.

Adverse reactions to oxycodone may vary in frequency and severity.

Common Side Effects

• Nausea and vomiting: mild to moderate gastrointestinal upset.
• Constipation: reduced bowel motility leading to hard stools.
• Drowsiness or sedation: increased sleepiness or reduced alertness.
• Dizziness: light‑headed sensation, especially when standing.
• Dry mouth: reduced salivation causing oral discomfort.
• Itching or rash: mild skin irritation or pruritus.

Serious or Rare Side Effects

• Respiratory depression: slowed or shallow breathing that can be life‑threatening.
• Severe hypotension: marked drop in blood pressure leading to fainting.
• Seizures: convulsive episodes in susceptible individuals.
• Allergic anaphylaxis: rapid onset of swelling, hives, and airway compromise.
• Dependence or addiction: potential for misuse and physical dependence with prolonged use.
• Adrenal insufficiency: rare hormonal imbalance affecting stress response.

When prescribing oxycodone, clinicians should consider several safety measures.

• Assess pain severity and prior opioid use: determine if opioid therapy is appropriate.
• Evaluate respiratory function: patients with compromised breathing are at higher risk.
• Review concurrent CNS depressants: avoid additive sedation or respiratory effects.
• Monitor for signs of dependence: watch for cravings, tolerance, or withdrawal.
• Adjust dose in renal or hepatic impairment: reduced clearance may require lower dosing.
• Store below 25°C: keep in the original packaging, protect from moisture and direct sunlight.

Oxycodone may interact with a range of medications, altering its efficacy or safety profile.

Major Interactions (Avoid)

• Benzodiazepines: combined use can cause profound respiratory depression.
• CNS depressants: alcohol, barbiturates, or other sedatives increase sedation risk.
• MAO inhibitors: may precipitate hypertensive crisis or serotonin syndrome.

Moderate Interactions (Monitor Closely)

• CYP3A4 inhibitors (e.g., ketoconazole): increase oxycodone plasma levels.
• CYP2D6 inhibitors (e.g., fluoxetine): may reduce conversion to active metabolites.
• Anticholinergic agents: can worsen constipation and urinary retention.